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Device and method for measuring luminescent spectrum change rule with temperature of quantum dot

A technology of luminescence spectrum and variation law, applied in the field of devices for measuring the variation law of luminescence spectrum of various quantum dots with temperature, can solve the problem of high manufacturing cost, difficult to heat and control temperature of integrating sphere, unsuitable for quantum dot luminescence spectrum fast, Accurate detection and other problems, to achieve the effect of low cost, convenient assembly and measurement implementation, and shorten the measurement process time

Active Publication Date: 2017-08-18
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

Although the existing integrating sphere can be used to measure the luminescence spectrum, the integrating sphere is not easy to heat and control the temperature, the production cost is high, and it is not suitable for the rapid and accurate detection of the quantum dot luminescence spectrum at different temperatures

Method used

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  • Device and method for measuring luminescent spectrum change rule with temperature of quantum dot
  • Device and method for measuring luminescent spectrum change rule with temperature of quantum dot
  • Device and method for measuring luminescent spectrum change rule with temperature of quantum dot

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Embodiment Construction

[0033] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments, which are explanations of the present invention, rather than limitations.

[0034] Such as figure 1 As shown, the device for measuring the variation of the luminescence spectrum of quantum dots with temperature according to the present invention includes a COB-packaged blue or ultraviolet LED lighting source, a hollow cylinder 3, a resistance wire 5, a temperature probe 6 and a photoelectric probe 7. The LED lighting source includes an aluminum substrate 1, an LED or LED chipset 2 that emits blue light or ultraviolet light and is connected to the LED or LED chipset 2. The LED chips are solidified on the aluminum substrate to improve heat dissipation efficiency and achieve good heat dissipation. The aluminum substrate 1 is fixed on the lower end of the hollow cylinder 3, so that the LED or LED chipset 2 on the aluminum substrate 1 is embedded in the low...

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Abstract

The invention provides a device and method for measuring a luminescent spectrum change rule with temperature of a quantum dot. The device comprises a blue-ray or ultraviolet LED lighting source, a hollow cylinder arranged on the blue-ray or ultraviolet LED lighting source, a transparent sheet arranged in the middle of the hollow cylinder and plated with a quantum dot film, a resistance wire wound on the hollow cylinder, a universal meter temperature probe internally inserted between the resistance wire and the outer surface of the hollow cylinder, and a photoelectric probe fixed on the top end of the hollow cylinder. After the LED lighting source is lightened, the resistance wire is used for heating the quantum dot film in the hollow cylinder, the photoelectric probe is used for acquiring a signal of the luminescent source formed by irradiating the quantum dot film through the LED lighting source, and the luminescent spectrum change rule with the temperature of the quantum dot can be acquired according to luminescent feature parameters of the acquired luminescent spectrum and the like of the quantum dot under different temperatures.

Description

technical field [0001] The invention relates to a device and a method for measuring the variation law of the luminescence spectrum of quantum dots with temperature, in particular to a device capable of measuring the variation law of luminescence spectrum of quantum dots with temperature. Background technique [0002] Quantum dots are semiconductor nanostructures that bind conduction band electrons, valence band holes, and excitons in three spatial directions. The electronic movement of quantum dots is restricted in three-dimensional space, so it is sometimes called "artificial atom", "superlattice", "superatom" or "quantum dot atom". concept. Such constraints can be attributed to electrostatic potentials (generated by external electrodes, doping, strain, impurities), interfaces of two different semiconductor materials (e.g. in self-assembled quantum dots), surfaces of semiconductors (e.g. semiconductor nanocrystals ), or a combination of the above three. Quantum dots have...

Claims

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Application Information

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IPC IPC(8): G01N21/27G01J3/28
CPCG01J3/28G01N21/27G01N2201/023G01N2201/062
Inventor 范应娟孙立蓉张方晖张婵婵李亭亭王江南聂屈洋刘晋红
Owner SHAANXI UNIV OF SCI & TECH
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