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Flexible solar blind detector of small organic molecule-gallium oxide heterojunction and preparation method of flexible solar blind detector

A heterojunction and small molecule technology, applied in the direction of organic semiconductor devices, semiconductor/solid-state device manufacturing, electric solid-state devices, etc., can solve the problem that flexible substrates cannot maintain flexibility, achieve excellent hole conductivity, easy to manufacture, Effect of High Hole Mobility

Pending Publication Date: 2021-07-13
金华紫芯科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the reported gallium oxide-based photodetectors based on high crystalline quality need to be fabricated on flexible substrates at high temperature (>800 °C), and flexible substrates usually cannot remain flexible at this temperature.

Method used

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  • Flexible solar blind detector of small organic molecule-gallium oxide heterojunction and preparation method of flexible solar blind detector
  • Flexible solar blind detector of small organic molecule-gallium oxide heterojunction and preparation method of flexible solar blind detector
  • Flexible solar blind detector of small organic molecule-gallium oxide heterojunction and preparation method of flexible solar blind detector

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Experimental program
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Embodiment 1

[0033] A method for preparing a flexible solar-blind detector of an organic small molecule-gallium oxide heterojunction, including:

[0034] Take a PET / ITO flexible substrate with a size of 50mm×50mm×0.5mm, rinse the PET / ITO flexible substrate with acetone, ethanol, and deionized water for 10 minutes each, take it out, rinse it with deionized water, and finally dry it with Blow dry with air to obtain a pretreated PET / ITO flexible substrate, ready for use.

[0035] The pretreated PET / ITO flexible substrate is covered with thermal release tape to partially cover the ITO layer of the PET / ITO flexible substrate, and placed in a deposition chamber to grow a-GaO thin film at room temperature by magnetron sputtering method to produce The deposition conditions are as follows, the background vacuum is 1×10 -4Pa, the PET / ITO flexible substrate temperature is room temperature, the working atmosphere is Ar gas, the Ar gas flow is 10SCCM, the working pressure is 0.8Pa, the sputtering powe...

Embodiment 2

[0047] A method for preparing a flexible solar-blind detector of an organic small molecule-gallium oxide heterojunction, including:

[0048] Take a PET / ITO flexible substrate with a size of 50mm×50mm×0.5mm, rinse the PET / ITO flexible substrate with acetone, ethanol, and deionized water for 10 minutes each, take it out, rinse it with deionized water, and finally dry it with Blow dry with air to obtain a pretreated PET / ITO flexible substrate, ready for use.

[0049] The pretreated PET / ITO flexible substrate is covered with thermal release tape to partially cover the ITO layer of the PET / ITO flexible substrate, and placed in a deposition chamber to grow a-GaO thin film at room temperature by magnetron sputtering method to produce The deposition conditions are as follows, the background vacuum is 1×10 -4 Pa, the PET / ITO flexible substrate temperature is room temperature, the working atmosphere is Ar gas, the Ar gas flow is 10SCCM, the working pressure is 0.8Pa, the sputtering pow...

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Abstract

The invention belongs to the technical field of photoelectric conversion, and particularly relates to a flexible solar blind detector of a small organic molecule-gallium oxide heterojunction and a preparation method of the flexible solar blind detector. The detector comprises a PET / ITO flexible substrate, an a-GaO light absorption layer, an NPB layer, a first test electrode and a second test electrode, the PET / ITO flexible substrate comprises a PET layer and an ITO layer located on the PET layer; the a-GaO light absorption layer is positioned above the ITO layer deviating from the PET layer; and the NPB layer is located on the face, away from the PET / ITO flexible substrate, of the a-GaO light absorption layer. The second test electrode is positioned at one side, deviating from the PET layer, of the ITO layer; and the first test electrode is located at one side, deviating from the a-GaO light absorption layer, of the NPB layer, wherein the a-GaO light absorption layer and the NPB layer form an a-GaO / NPB heterojunction, and a built-in electric field is formed, so that photon-generated carriers are separated. The detector has the self-powered performance, is flexible, well meets the requirements of wearable devices, and has potential application prospects in the field of intelligent monitoring.

Description

technical field [0001] The invention belongs to the technical field of photoelectric conversion, and in particular relates to a flexible solar-blind detector of an organic small molecule-gallium oxide heterojunction and a preparation method thereof. Background technique [0002] Owing to the significant development of smart and integrated science and technology, wearable photodetectors have attracted great attention due to their wide applications in smart surveillance. In the past decade, the study of wearable photodetectors has become a hot topic worldwide, and the number of publications on wearable photodetectors has grown exponentially with time on a logarithmic scale. Compared with conventional photodetectors that should meet the "5S" requirements, wearable devices require more functions, such as maintaining high performance and good stability under bending, compression or twisting. In addition, in order to realize the functions of wearable photodetectors, some addition...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/44H01L23/544H01L51/48
CPCH01L22/32H10K71/00H10K71/12H10K71/70H10K85/631H10K85/633H10K77/111H10K30/15H10K30/81H10K2102/00Y02E10/549
Inventor 郭道友王顺利吴超吴小平
Owner 金华紫芯科技有限公司
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