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A kind of thermal radiation self-controlling temperature composite material film and its preparation method and photodetector

A technology of composite material thin film and heat radiation, applied in the direction of nanotechnology for materials and surface science, semiconductor devices, final product manufacturing, etc., can solve the problem of low angle dependence characteristics, limited photoelectric response performance, and restricted light detection Performance and other issues, to achieve the effect of fine film structure, easy multi-component coupling, and the integration of materials and functional structures

Active Publication Date: 2022-07-05
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the current excellent two-dimensional MoS 2 Although highly responsive ( R =880 A / W, lambda =561 nm), but its operating bias is relatively high (V g =-70 V), and its photoresponse drops to 9×10 in the infrared part -2 mA / W
Furthermore, two-dimensional MoS 2 Limited by the thickness of the material, its light absorption performance is limited, and the low angle dependence characteristics are rarely considered, thus restricting the development of two-dimensional MoS 2 Further improvement in light detection performance of photodetectors
Especially due to the negative effect of overheating response on photodetection, today’s photodetection devices hardly use the photothermal effect to assist in enhancing photodetection, thus limiting the further improvement of photoresponse performance.

Method used

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  • A kind of thermal radiation self-controlling temperature composite material film and its preparation method and photodetector
  • A kind of thermal radiation self-controlling temperature composite material film and its preparation method and photodetector
  • A kind of thermal radiation self-controlling temperature composite material film and its preparation method and photodetector

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Embodiment 1

[0064] see figure 1 , figure 2 , image 3 , Figure 4 As shown, the present embodiment provides a method for preparing a low-angle-dependent thermal radiation self-temperature-controlling composite material film, which includes the following steps:

[0065] S1: see figure 2 As shown in (a), first select a biological template material to construct a biomimetic template. The biological template material is a natural biological material with a low angular dependence and a bionic functional structure of thermal radiation self-controlling temperature. In this embodiment, it will have a low angular dependence. , The bionic template of the thermal radiation self-controlling temperature bionic functional structure is called LAHR bionic template 1;

[0066] In this embodiment, for the selection of biological template materials, according to the temperature-changing animals living in cold regions, it is necessary to obtain light energy and thermal energy from the outside to suppo...

Embodiment 2

[0093] This embodiment provides a method for preparing a low-angle-dependent thermal radiation self-controlling composite material film. Gold (Au) ions, cadmium sulfide (CdS) for semiconductor materials, molybdenum sulfide (MoS) for two-dimensional materials 2 ), the composite film prepared in this example is marked as MoS 2 / CdS / Au_C_PW.

[0094] The present embodiment provides a method for preparing a low-angle-dependent thermal radiation self-temperature-controlling composite material film, and the specific steps are as follows:

[0095] (1) Select the black-gray area of ​​the broad-banded swallowtail as the LAHR template, and the SEM image of the black-grey butterfly wing of the broad-banded swallowtail is as follows Figure 5 shown;

[0096] (2) The selected LAHR template was subjected to the following pretreatment and activation treatment: first, soak the butterfly wings in absolute ethanol for 30 min, and then wash them with deionized water after soaking; then immers...

Embodiment 3

[0118] This embodiment provides a preparation method of a low-angle-dependent thermal radiation self-controlling composite material film. The difference between it and the preparation method provided in the second embodiment lies in the selection of the LAHR template. In this embodiment, the porous window structure of the Broadband Papilio is selected as the biomimetic structure. The present embodiment provides a method for preparing a low-angle-dependent thermal radiation self-temperature-controlling composite material film, which specifically includes the following steps:

[0119] (1) Selecting the porous window structure of the broadband Papilio as the biomimetic structure, and preparing the porous structure imitating the porous window structure of the broadband Papilio by anodizing method;

[0120] (2) Perform the following pretreatment and activation treatment on the prepared porous structure imitating the broadband swallowtail porous window structure;

[0121] (3) Subse...

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Abstract

The invention discloses a low-angle-dependent thermal radiation self-controlling composite material film, a preparation method and a photodetector. A biological template material is selected to construct a biomimetic template; metal nanoparticles and semiconductors are then chemically deposited on the biomimetic template in sequence. Nanoparticles; Finally, two-dimensional materials are grown on semiconductor / metal plasmonic composite films. The present invention realizes thermal radiation balance by selecting natural biological materials with low angle dependence and thermal radiation self-controlling bionic functional structure, and realizes thermal assisted enhancement and overheating prevention and self-controlling temperature without additional refrigeration source, thus solving the problem of thermal assisted enhancement. The contradiction between the photoelectric effect and the negative effect of overheating on the photoelectric effect has realized the anti-overheating self-control temperature, heat-assisted enhancement, and low-angle-dependent broadband response. The invention proposes for the first time the idea of ​​using the micro-nano functional structure to control the balance of thermal radiation, so as to realize the thermal self-regulation of electronic and optoelectronic materials, and the self-control of overheating prevention.

Description

technical field [0001] The invention belongs to the field of novel nanomaterials, and in particular relates to a low-angle-dependent thermal radiation self-controlling composite material film, a preparation method thereof, and a photodetector. Background technique [0002] Broadband photodetectors, especially infrared region photodetectors, have been widely studied due to their diverse applications (eg, imaging, communications, remote control, medicine, environmental and security monitoring, etc.). [0003] At present, the photodetection materials of the main commercial photodetectors are V, III-V and II-VI materials, such as: Si, SiC, InAs, InSb, In 1-x Ga x As and HgCdTe et al. However, due to the high preparation cost of these materials, the need for external cooling, the narrow band gap of the materials and the toxicity, the further application of these materials in the field of photodetection is serious. Due to their attractive optical and electrical properties, two-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/18H01L31/0296H01L31/032H01L31/0236H01L31/09B82Y30/00
CPCH01L31/18H01L31/1836H01L31/09H01L31/0296H01L31/032H01L31/02366B82Y30/00Y02P70/50
Inventor 田军龙乔如意陈璐璐
Owner XIANGTAN UNIV