A cadmium zinc telluride crystal single crystal growth device

Abstract

The present invention provides a CdZnTe crystal single crystal growth device, which belongs to the technical field of CdZn crystal single crystal growth, and includes a lower shell, the outer side wall of which is rotatably connected to a control panel, the top of which is fixedly connected to an upper shell, and the top of which is fixedly connected to a top plate, and also includes: a heating component, which is arranged inside the upper shell, and is used to provide temperature support for CdZnTe crystal growth; a displacement control component, which is arranged above and below the heating component, and is used for precise temperature control during the growth of CdZnTe crystals; and a trigger component, which is arranged inside the lower shell, and is used to maintain the continuous working stability of the heating component. The invention ensures that the heating tube is always in a stable heating state by arranging two heating wires in the heating tube, and prevents the problem that the temperature is out of control due to complete damage of the heating tube, and the crystal cannot grow in the expected state.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to a cadmium zinc telluride crystal single crystal growth device. Background Art

[0002] Cadmium zinc telluride is a semiconductor material composed of three elements: tellurium, zinc and cadmium. This compound has excellent radiation detection performance at room temperature, especially for the detection of X-rays and gamma rays. It can directly convert incident high-energy photons into charge signals, so it is widely used in medical imaging, security inspection, astronomy, nuclear medicine and other fields. Single crystal cadmium zinc telluride refers to a single crystal structure of cadmium zinc telluride material produced by a specific crystal growth technology. Compared with polycrystalline or amorphous materials, single crystal cadmium zinc telluride has better physical properties, such as higher resolution and lower noise level, because there are no grain boundaries inside the single crystal, which reduces the number of defects and scattering centers. These characteristics make single crystal cadmium zinc telluride an ideal choice for high-performance radiation detectors, especially in applications requiring high precision and high sensitivity. Due to its complex preparation process and high cost, the production and technology of single crystal cadmium zinc telluride has always been a research hotspot and continues to promote the development of related fields.

[0003] The growth process of CdZnTe crystals usually relies on the temperature gradient method, which promotes the formation of crystals by establishing a temperature gradient from liquid to solid in the growth zone. However, in the growth process of single crystal CdZnTe, latent heat is released when the liquid raw material is converted into solid crystals, which puts higher requirements on the temperature control of the already very sensitive solid-liquid interface. If these exothermic effects cannot be effectively managed, local overheating may occur, resulting in an unstable crystal growth environment, which in turn affects the quality and purity of the crystal. In addition, the uniformity of the heater material will also introduce additional complexity, because even at the same vertical height, there may be slight differences in the temperature of the surrounding circle, which will cause inconsistent growth rates of the crystal along the vertical direction. In summary, these factors work together to make the growth process of single crystal CdZnTe complex and the success rate low, requiring fine process control and optimization to improve the single crystal rate.

[0004] How to invent a CdZnTe single crystal growth device to improve these problems has become an urgent problem to be solved by technicians in this field. Summary of the invention

[0005] In order to make up for the above shortcomings, the present invention provides a CdZnTe crystal single crystal growth device, aiming to improve the problems mentioned in the above background.

[0006] The present invention is achieved in that:

[0007] The present invention provides a CdZnTe crystal single crystal growth device, comprising a lower shell, an outer side wall of the lower shell is rotatably connected with a control panel, the top of the lower shell is fixedly connected with an upper shell, the top of the upper shell is fixedly connected with a top plate, the outer side wall of the upper shell is rotatably connected with a closed door, and further comprising: a heating component, the heating component is arranged inside the upper shell, the heating component is used to provide temperature support for the growth of CdZnTe crystals; a displacement control component, the displacement control component is arranged above and below the heating component, the displacement control component is used for precise temperature control during the growth of CdZnTe crystals; a trigger component, the trigger component is arranged inside the lower shell, the trigger component is used to maintain the continuous working stability of the heating component.

[0008] Preferably, the heating assembly includes a movable platform arranged on the inner side of the upper shell body, a heat insulation layer is arranged in the movable platform, a plurality of vertical frames are fixedly connected to the top of the movable platform, the plurality of vertical frames are arranged in a circular pattern, a plurality of heating tubes are fixedly connected to the inner side walls of the plurality of vertical frames, the plurality of heating tubes are equidistantly arranged in the length direction of the vertical frames, two independent heating wires are arranged in the heating tubes, a stabilizing plate is arranged on the inner side of the plurality of heating tubes, a card table is rotatably connected to the top of the stabilizing plate, a plurality of support bars are fixedly connected to the top of the stabilizing plate, a fixing ring is fixedly connected to the top of the plurality of support bars, a plurality of temperature sensors are embedded on the inner side walls of the support bars, the plurality of temperature sensors are distributed laterally and longitudinally, a stabilizing frame is fixedly connected to the top of the fixing ring, the top of the stabilizing frame is fixedly connected to the top plate, a crucible is arranged on the inner side of the plurality of support bars, the bottom of the crucible is clamped with the card table, a sealing cover is fixedly installed on the top of the crucible, and a card slot is arranged on the top of the sealing cover.

[0009] Preferably, the support bars are made of glass fiber, the support bars are arranged in a circular pattern, and the temperature sensors are distributed equidistantly in the length direction of the support bars.

[0010] Preferably, a plurality of light emitting diodes are arranged on the control panel, the light emitting diodes are electrically connected to the heating tubes, and the number of the heating tubes and the light emitting diodes are the same.

[0011] Preferably, the displacement control assembly includes a first motor fixedly connected to the top of the top plate, the output end of the first motor is fixedly connected to a telescopic rod, the top end of the telescopic rod is rotatably connected to the bottom of the top plate, and the bottom of the telescopic rod is engaged with a slot at the top of the sealing cover.

[0012] Preferably, the displacement control component also includes a bottom plate fixedly connected to the inner wall of the lower shell body, the top of the bottom plate is fixedly connected to the second motor, the output shaft of the second motor is fixedly connected to the worm, the top of the bottom plate is rotatably connected to a rotating sleeve, the outer wall fixed sleeve of the rotating sleeve is provided with a turbine, the worm is meshed with the turbine, a threaded rod is provided on the inner side of the rotating sleeve, the top of the threaded rod is fixedly connected to the moving platform, the rotating sleeve is meshed with the threaded rod through an internal thread, a plurality of gear boxes are fixedly connected to the top of the bottom plate, a stabilizing rod is penetrated through the gear box, a plurality of transmission rods are rotatably connected to the outer wall of the gear box, the plurality of transmission rods are located in the same horizontal plane and are arranged horizontally, a plurality of racks are provided on the outer wall of the stabilizing rod, a plurality of teeth are provided at both ends of the transmission rod, and the stabilizing rod is meshed with the transmission rod.

[0013] Preferably, a control box is fixedly connected inside the lower shell, and a controller and a plurality of trigger components are fixedly connected inside the control box, and the number of the trigger components is the same as the number of the heating tubes.

[0014] Preferably, the trigger assembly includes a trigger shell fixedly connected to the inner wall of the control box, the inner wall of the trigger shell is fixedly connected with an iron core, a coil is wound on the iron core, the side wall of the trigger shell is rotatably connected with a swing shaft, a trigger plate is fixedly connected to the swing shaft, the trigger plate is arranged in a "Z" shape, the side wall of the trigger plate is fixedly connected with an iron plate and a tension spring, the iron plate and the tension spring are located on both sides of the trigger plate, the tension spring is fixedly connected to the inner wall of the trigger shell, the side wall of the trigger shell is fixedly connected with a moving plate and a contact plate, and a connecting plate is fixedly connected to the contact plate.

[0015] Preferably, the ends of the moving piece and the contact piece are both provided with contacts.

[0016] Preferably, the movable sheet and the contact sheet both penetrate the trigger plate, the movable sheet and the trigger plate are slidably arranged, the two heating wires in the heating tube are electrically connected to the contact sheet and the connecting sheet respectively, and the coil is arranged in the circuit of the heating wire connected to the connecting sheet.

[0017] The beneficial effects of the present invention are as follows: by setting temperature sensors distributed horizontally and vertically, the multiple temperature sensors arranged vertically transmit the temperature increase signal to the controller through the temperature increase when the liquid solidifies, and by controlling the rotation of the output end of the second motor, the moving platform drives the multiple heating tubes with step temperature settings to move downward, so that the solid-liquid interface maintains a relatively constant temperature state; through the horizontally arranged temperature sensors, when the temperature difference of the crucible in the horizontal direction exceeds the set value, the controller controls the rotation of the first motor to keep the temperature of the crucible in the horizontal direction within the minimum error value, thereby ensuring that the crystal grows at the same rate, thereby making the crystal growth process more stable;

[0018] By arranging two heating wires in the heating tube, when one of the heating wires breaks due to continuous accumulated stress inside, the circuit is interrupted by the breaking of the heating wire, causing the iron core to lose its magnetism. Under the tension of the tension spring, the other heating wire is switched to the energized state, ensuring that the heating tube is always in a stable heating state, preventing the problem of temperature loss of control due to complete damage of the heating tube and the inability of the crystal to grow as expected. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of a cadmium zinc telluride crystal single crystal growth device provided in an embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of the lower shell of a cadmium zinc telluride crystal single crystal growth device provided in an embodiment of the present invention;

[0022] Figure 3 It is a schematic diagram of the structure of a heating tube of a cadmium zinc telluride crystal single crystal growth device provided by an embodiment of the present invention;

[0023] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0024] Figure 5 It is a schematic diagram of the crucible structure of a cadmium zinc telluride crystal single crystal growth device provided in an embodiment of the present invention;

[0025] Figure 6 It is a schematic diagram of the structure of a displacement control component of a cadmium zinc telluride crystal single crystal growth device provided by an embodiment of the present invention;

[0026] Figure 7 yes Figure 6 The enlarged view of point B in the middle;

[0027] Figure 8 It is a schematic diagram of the structure of a trigger component of a cadmium zinc telluride crystal single crystal growth device provided in an embodiment of the present invention.

[0028] In the figure: 1, lower shell; 2, control panel; 3, upper shell; 4, top plate; 5, closed door; 6, moving platform; 7, stand; 8, heating tube; 9, stabilizing plate; 10, card table; 11, support bar; 12, stabilizing frame; 13, temperature sensor; 14, fixing ring; 15, crucible; 16, sealing cover; 17, card slot; 18, first motor; 19, telescopic rod; 20, bottom plate; 21, second motor; 22, worm; 23, rotating sleeve; 24, turbine; 25, threaded rod; 30, gear box; 31, stabilizing rod; 32, transmission rod; 40, control box; 41, controller; 42, trigger shell; 50, iron core; 51, coil; 52, swing shaft; 53, trigger plate; 54, iron plate; 55, connecting piece; 56, moving piece; 57, contact piece; 58, tension spring; 59, contact; 60, light emitting diode. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example, see Figure 1-Figure 4 A cadmium zinc telluride crystal single crystal growth device includes a lower shell 1, the outer side wall of the lower shell 1 is rotatably connected to a control panel 2, the top of the lower shell 1 is fixedly connected to an upper shell 3, the top of the upper shell 3 is fixedly connected to a top plate 4, and the outer side wall of the upper shell 3 is rotatably connected to a closed door 5, and also includes: a heating component, the heating component is arranged inside the upper shell 3, and the heating component is used to provide temperature support for the growth of cadmium zinc telluride crystals; a displacement control component, the displacement control component is arranged above and below the heating component, and the displacement control component is used for precise temperature control during the growth process of cadmium zinc telluride crystals; a trigger component, the trigger component is arranged inside the lower shell 1, and the trigger component is used to maintain the continuous working stability of the heating component.

[0031] The heating assembly includes a movable platform 6 arranged on the inner side of the upper shell 3, a heat insulating layer is arranged in the movable platform 6, a plurality of vertical frames 7 are fixedly connected to the top of the movable platform 6, the plurality of vertical frames 7 are arranged in a circular pattern, a plurality of heating tubes 8 are fixedly connected to the inner side walls of the plurality of vertical frames 7, the plurality of heating tubes 8 are equidistantly arranged in the length direction of the vertical frames 7, two independent heating wires are arranged in the heating tube 8, a stabilizing plate 9 is arranged on the inner side of the plurality of heating tubes 8, a card table 10 is rotatably connected to the top of the stabilizing plate 9, a plurality of supporting bars 11 are fixedly connected to the top of the plurality of supporting bars 11, a fixing ring 14 is fixedly connected to the top of the plurality of supporting bars 11, a plurality of temperature sensors 13 are embedded on the inner side walls of the plurality of supporting bars 11, and a plurality of The temperature sensors 13 are distributed horizontally and vertically, the top of the fixing ring 14 is fixedly connected to the stabilizing frame 12, the top of the stabilizing frame 12 is fixedly connected to the top plate 4, a crucible 15 is arranged on the inner side of the plurality of support bars 11, the bottom of the crucible 15 is clamped with the clamping table 10, a sealing cover 16 is fixedly installed on the top of the crucible 15, a clamping groove 17 is arranged on the top of the sealing cover 16, the support bars 11 are made of glass fiber, the support bars 11 are arranged in a circle, the temperature sensors 13 are equidistantly distributed in the length direction of the support bars 11, a plurality of light-emitting diodes 60 are arranged on the control panel 2, the light-emitting diodes 60 are electrically connected to the heating tube 8, and the number of the heating tube 8 and the light-emitting diodes 60 are arranged in the same number.

[0032] It should be noted that the temperature sensor 13 is a platinum resistance sensor. The platinum resistance sensor shows significant advantages in monitoring the crystal growth process. First of all, it is reflected in its high precision and stability. It can provide extremely accurate and consistent temperature readings, which is very important for controlling the key temperature parameters in the crystal growth process. These sensors can operate over a wide temperature range and maintain reliable performance from low temperature to high temperature, ensuring that they are suitable for the crystal growth conditions of various materials. In addition, it has excellent corrosion resistance and chemical stability, and can maintain its physical and chemical properties unchanged for a long time even in an environment with high temperature or corrosive substances. Platinum resistance sensors also exhibit an almost linear resistance-temperature relationship, which makes temperature calculation simple and accurate, reducing the complexity of signal processing. Finally, their low self-heating effect means that the current passing through the sensor is small and will not have a significant impact on the measurement results, thereby ensuring the accuracy of temperature measurement. In summary, platinum resistance sensors have become an ideal choice for temperature monitoring in the crystal growth process due to these characteristics.

[0033] Reference Figure 5-Figure 7 The displacement control assembly includes a first motor 18 fixedly connected to the top of the top plate 4, and a telescopic rod 19 is fixedly connected to the output end of the first motor 18. The top of the telescopic rod 19 is rotatably connected to the bottom of the top plate 4, and the bottom of the telescopic rod 19 is engaged with the slot 17 at the top of the sealing cover 16.

[0034] The displacement control assembly also includes a bottom plate 20 fixedly connected to the inner wall of the lower housing 1, a second motor 21 is fixedly connected to the top of the bottom plate 20, a worm 22 is fixedly connected to the output shaft of the second motor 21, a rotating sleeve 23 is rotatably connected to the top of the bottom plate 20, a turbine 24 is fixedly provided on the outer wall of the rotating sleeve 23, the worm 22 is meshed with the turbine 24, a threaded rod 25 is provided on the inner side of the rotating sleeve 23, the top of the threaded rod 25 is fixedly connected to the moving platform 6, the rotating sleeve 23 is meshed with the threaded rod 25 through an internal thread, and the top of the bottom plate 20 is fixedly connected to the moving platform 6. A plurality of gear boxes 30 are fixedly connected, a stabilizing rod 31 is penetrated on the gear box 30, a plurality of transmission rods 32 are rotatably connected to the outer wall of the gear box 30, the plurality of transmission rods 32 are located in the same horizontal plane and are horizontally arranged, a plurality of racks are arranged on the outer wall of the stabilizing rod 31, a plurality of teeth are arranged at both ends of the transmission rod 32, the stabilizing rod 31 is meshed with the transmission rod 32, a control box 40 is fixedly connected inside the lower shell 1, a controller 41 and a plurality of trigger components are fixedly connected inside the control box 40, and the number of the trigger components is the same as the number of the heating tubes 8.

[0035] It should be noted that when the output end of the second motor 21 rotates, it drives the turbine 24 to rotate, drives the threaded rod 25 to move axially, and then drives the movable platform 6 to move. When the movable platform 6 moves along the axial direction of the threaded rod 25, by setting a plurality of stabilizing rods 31 and a plurality of transmission rods 32, since the stabilizing rods 31 are meshed with the transmission rods 32, it is ensured that the displacement of the plurality of stabilizing rods 31 is the same during axial movement, thereby ensuring that the movable platform 6 is always in a horizontal position, and maintaining the stability of the components above the movable platform 6.

[0036] Reference Figure 8 The trigger assembly includes a trigger housing 42 fixedly connected to the inner wall of the control box 40, the inner wall of the trigger housing 42 is fixedly connected to an iron core 50, a coil 51 is wound around the iron core 50, a swing shaft 52 is rotatably connected to the side wall of the trigger housing 42, a trigger plate 53 is fixedly connected to the swing shaft 52, the trigger plate 53 is arranged in a "Z" shape, an iron plate 54 and a tension spring 58 are fixedly connected to the side wall of the trigger plate 53, the iron plate 54 and the tension spring 58 are located on both sides of the trigger plate 53, and the tension spring 58 is connected to the trigger housing 42 The inner wall of the trigger shell 42 is fixedly connected, a moving piece 56 and a contact piece 57 are fixedly connected to the side wall of the trigger shell 42, a connecting piece 55 is fixedly connected to the contact piece 57, contacts 59 are arranged at the ends of the moving piece 56 and the contact piece 57, the moving piece 56 and the contact piece 57 both penetrate the trigger plate 53, the moving piece 56 and the trigger plate 53 are slidably arranged, the two heating wires in the heating tube 8 are electrically connected to the contact piece 57 and the connecting piece 55 respectively, and the coil 51 is arranged in the circuit of the heating wire connected to the connecting piece 55.

[0037] In this embodiment, the cadmium zinc telluride crystal raw material powder that has been proportioned and evenly mixed is first placed in the crucible 15 and sealed, and then the crucible 15 is clamped with the clamping table 10, and the telescopic rod 19 is extended, and the bottom of the telescopic rod 19 is embedded in the inside of the clamping groove 17, and the closed door 5 is closed to complete the placement of the crucible 15, and the cadmium zinc telluride raw material in the crucible 15 is melted by slowly heating a plurality of heating tubes 8. After all the raw materials are melted, the bottom heating tube 8 is first adjusted to cool down, so that the cadmium zinc telluride raw material in the crucible 15 starts to solidify from the bottom to form a solid-liquid interface;

[0038] Continue to adjust the temperature of the multiple heating tubes 8 so that the temperature of the multiple heating tubes 8 is set in a step-like manner from bottom to top, because the growth direction of the CdZnTe crystal will grow along the direction where heat is most easily dissipated, so the position of the solid-liquid interface will move upward with the growth of the CdZnTe crystal. Since the liquid solidifies, heat will be released, which will cause the temperature at the solid-liquid interface to be too high and unable to reach a constant state, thereby affecting the growth rate of the crystal. By setting the temperature sensors 13 distributed horizontally and vertically, the multiple temperature sensors 13 arranged vertically judge the position of the solid-liquid interface through the temperature increase when the liquid solidifies, and transmit the temperature increase signal to the controller 41. The controller 41 controls the output end of the second motor 21 to rotate, thereby driving the turbine 24 to rotate, and driving the threaded rod 25 to rotate. The plurality of heating tubes 8 with stepped temperature settings are driven downward by the moving platform 6, so that the solid-liquid interface is located at a relatively low temperature position, thereby maintaining a relatively constant temperature state at the solid-liquid interface; due to the problem of uniformity of the heating tube 8 during production, the temperature of the heating tube 8 in the horizontal direction is different. Controlling this difference is particularly important in the crystal growth process that requires precise temperature control. The temperature of the crucible 15 in the horizontal direction is detected by the transversely arranged temperature sensor 13. If the temperature difference exceeds the set value, the controller 41 controls the first motor 18 to rotate, drives the telescopic rod 19 to rotate, and drives the crucible 15 to rotate, so that the temperature of the crucible 15 in the horizontal direction is always kept within the minimum error value, ensuring that the crystal grows at the same rate, thereby making the crystal growth process more stable;

[0039] Since the heating wire in the heating tube 8 undergoes repeated heating and cooling cycles during operation, this will cause continuous accumulation of stress inside the material, gradually forming tiny cracks or weakened points, and eventually leading to breakage. If the heating wire in the heating tube 8 breaks, it will affect the temperature during crystal growth, and thus affect the quality of the crystal. By arranging two heating wires in the heating tube 8, when the heating tube 8 is powered, since the coil 51 is arranged in the circuit of the heating wire connected to the connecting piece 55, the coil 51 is energized to magnetize the iron core 50, adsorb the iron plate 54, and make the trigger plate 53 rotate on the swing shaft 52, pushing the moving piece 56 to separate from the contact 59 of the contact piece 57. When the heating wire connected to the connecting piece 55 is broken, the coil 51 is powered off, causing the iron core 50 to lose its magnetism. Under the tension of the tension spring 58, the trigger plate 53 is driven to rotate on the swing shaft 52, so that the moving piece 56 contacts the contact 59 of the contact piece 57, and the electric heating wire connected to the contact piece 57 is powered, ensuring that the heating tube 8 is always in a stable heating state, and preventing the problem of temperature loss due to complete damage of the heating tube 8, and the inability of the crystal to grow as expected.

[0040] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device, and the specific selection calculation method adopts the existing technology in this field, so it will not be described in detail.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cadmium zinc telluride crystal single crystal growth device, comprising a lower shell (1), the outer side wall of the lower shell (1) is rotatably connected to a control panel (2), the top of the lower shell (1) is fixedly connected to an upper shell (3), the top of the upper shell (3) is fixedly connected to a top plate (4), and the outer side wall of the upper shell (3) is rotatably connected to a closed door (5), characterized in that: Also includes: A heating component, the heating component is arranged inside the upper shell (3), the heating component is used to provide temperature support for the growth of cadmium zinc telluride crystals, the heating component comprises a plurality of heating tubes (8), two independent heating wires are arranged inside the heating tubes (8), and the heating component also comprises a plurality of temperature sensors, the plurality of temperature sensors (13) are distributed in the transverse and longitudinal directions; A displacement control assembly, which is disposed above and below the heating assembly and is used for precise temperature control during the growth of the cadmium zinc telluride crystal; A trigger component, the trigger component is arranged inside the lower housing (1), and the trigger component is used to maintain the continuous working stability of the heating component. A control box (40) is fixedly connected to the lower housing (1). The trigger assembly comprises a trigger housing (42) fixedly connected to the inner side wall of the control box (40). An iron core (50) is fixedly connected to the inner side wall of the trigger housing (42). A coil (51) is wound around the iron core (50). A swing shaft (52) is rotatably connected to the side wall of the trigger housing (42). A trigger plate (53) is fixedly connected to the swing shaft (52). The trigger plate (53) is arranged in a "Z" shape. An iron plate (54) and a tension spring (58) are fixedly connected to the side wall of the trigger plate (53). The iron plate (54) and the tension spring (58) are located on both sides of the trigger plate (53). The tension spring (58) is fixedly connected to the inner side wall of the trigger housing (42). A moving plate (56) and a contact plate (57) are fixedly connected to the side wall of the trigger housing (42). A connecting plate (55) is fixedly connected to the contact plate (57).

2. The cadmium zinc telluride single crystal growth device according to claim 1, characterized in that: The heating assembly comprises a movable platform (6) arranged on the inner side of the upper shell (3), a heat insulating layer being arranged inside the movable platform (6), a plurality of vertical frames (7) being fixedly connected to the top of the movable platform (6), the plurality of vertical frames (7) being arranged in a circular arrangement, a plurality of heating tubes (8) being fixedly connected to the inner side walls of the plurality of vertical frames (7), the plurality of heating tubes (8) being arranged equidistantly in the length direction of the vertical frames (7), two independent heating wires being arranged inside the plurality of heating tubes (8), a stabilizing plate (9) being arranged on the inner side of the plurality of heating tubes (8), a clamping plate (10) being rotatably connected to the top of the stabilizing plate (9), a plurality of supporting bars (11) being fixedly connected to the top of the plurality of supporting bars (11), a fixing ring (14) being fixedly connected to the top of the plurality of supporting bars (11), and a plurality of temperature sensors being embedded on the inner side walls of the supporting bars (11). (13), the plurality of temperature sensors (13) are distributed in the transverse and longitudinal directions, the top of the fixing ring (14) is fixedly connected to a stabilizing frame (12), the top of the stabilizing frame (12) is fixedly connected to the top plate (4), a crucible (15) is arranged on the inner side of the plurality of support bars (11), the bottom of the crucible (15) is clamped with the clamping table (10), a sealing cover (16) is fixedly installed on the top of the crucible (15), a clamping groove (17) is arranged on the top of the sealing cover (16), the displacement control component comprises a first motor (18) fixedly connected to the top of the top plate (4), the output end of the first motor (18) is fixedly connected to a telescopic rod (19), the top of the telescopic rod (19) is rotatably connected to the bottom of the top plate (4), and the bottom of the telescopic rod (19) is engaged with the clamping groove (17) at the top of the sealing cover (16).

3. The cadmium zinc telluride single crystal growth device according to claim 2, characterized in that: The support bars (11) are made of glass fiber, the support bars (11) are arranged in a circular pattern, and the temperature sensors (13) are distributed at equal distances in the length direction of the support bars (11).

4. The cadmium zinc telluride single crystal growth device according to claim 2, characterized in that: A plurality of light-emitting diodes (60) are arranged on the control panel (2); the light-emitting diodes (60) are electrically connected to the heating tubes (8); and the heating tubes (8) and the light-emitting diodes (60) are arranged in the same number.

5. The CdZnTe single crystal growth device according to claim 2, characterized in that: The displacement control assembly further comprises a bottom plate (20) fixedly connected to the inner side wall of the lower housing (1); a second motor (21) is fixedly connected to the top of the bottom plate (20); a worm (22) is fixedly connected to the output shaft of the second motor (21); a rotating sleeve (23) is rotatably connected to the top of the bottom plate (20); a turbine (24) is fixedly provided on the outer side wall of the rotating sleeve (23); the worm (22) is meshed with the turbine (24); a threaded rod (25) is provided on the inner side of the rotating sleeve (23); the top end of the threaded rod (25) is fixedly connected to the moving platform (6); the rotating sleeve (23) is meshed with the threaded rod (25) via an internal thread. The top of the bottom plate (20) is fixedly connected to a plurality of gear boxes (30), a stabilizing rod (31) is provided through the gear box (30), an outer wall of the gear box (30) is rotatably connected to a plurality of transmission rods (32), the plurality of transmission rods (32) are located in the same horizontal plane and are arranged horizontally, the outer wall of the stabilizing rod (31) is provided with a plurality of racks, both ends of the transmission rod (32) are provided with a plurality of teeth, the stabilizing rod (31) and the transmission rod (32) are arranged in meshing arrangement, and a controller (41) and a plurality of trigger components are fixedly connected inside the control box (40), the number of the trigger components being the same as the number of the heating tubes (8).

6. The CdZnTe single crystal growth device according to claim 2, characterized in that: The ends of the movable sheet (56) and the contact sheet (57) are both provided with contacts (59); the movable sheet (56) and the contact sheet (57) both penetrate the trigger plate (53); the movable sheet (56) and the trigger plate (53) are slidably arranged; the two heating wires in the heating tube (8) are respectively electrically connected to the contact sheet (57) and the connecting sheet (55); and the coil (51) is arranged in a circuit of the heating wire connected to the connecting sheet (55).

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