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A perovskite photovoltaic-luminescence-photodetection multifunctional device based on a composite interface transport material and its preparation method

A transmission material, perovskite technology, applied in nanotechnology for materials and surface science, photovoltaic power generation, chemical instruments and methods, etc., to achieve the effects of high photoelectric conversion efficiency, high detection sensitivity, and high luminous efficiency

Active Publication Date: 2021-03-30
GUANGDONG ZHIDA INUOWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For solar cells with heterojunction structures, light-emitting diodes, and photodetectors, due to the different energy band arrangements of each functional layer in different devices, it is difficult to achieve high-performance photovoltaic, luminescence, and photodetection performance on the same device at the same time The present invention aims to propose a perovskite photovoltaic-luminescence-photodetection multifunctional device based on a composite interface transport material and its preparation method, which eliminates the barrier between the perovskite active layer and the transport layer through energy band engineering, designed to be as Figure 2a The band structure shown

Method used

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  • A perovskite photovoltaic-luminescence-photodetection multifunctional device based on a composite interface transport material and its preparation method
  • A perovskite photovoltaic-luminescence-photodetection multifunctional device based on a composite interface transport material and its preparation method
  • A perovskite photovoltaic-luminescence-photodetection multifunctional device based on a composite interface transport material and its preparation method

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Experimental program
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Effect test

Embodiment 1

[0043] like figure 1 As shown, a photovoltaic-luminescence-photodetection multifunctional device based on perovskite includes transparent conductive glass, composite electron transport layer, perovskite active layer, composite hole transport layer and metal electrode layer.

[0044] The preparation method of the photovoltaic-luminescence-photodetection multifunctional device based on perovskite light comprises the following steps:

[0045] (1) Cleaning of ITO glass: select the ITO glass with a square resistance of 10Ω, a light transmittance of 90%, and a thickness of 1.1 mm, and ultrasonically clean the ITO conductive glass in deionized water, detergent, acetone, and ethanol solutions for 5 minutes. , and then dry the ITO glass with nitrogen, and treat it with an ultraviolet ozone cleaner for 20 minutes.

[0046] (2) Preparation of composite electron transport layer: 23mg of SnCl 2 2H 2 The aminated graphene quantum dots of O and 0.4mg are dissolved in the ethanol solutio...

Embodiment 2

[0053] In this embodiment, the transparent electrode used is FTO conductive glass. Other steps are the same as in Example 1, the photoelectric efficiency is 20.8% in reverse scan and 20.2% in forward scan. The luminous efficiency was 1.8%.

Embodiment 3

[0055] A perovskite-based photovoltaic-luminescence-photodetection multifunctional device, the preparation method of which comprises the following steps:

[0056] (1) Cleaning of ITO glass: select the ITO glass with a square resistance of 10Ω, a light transmittance of 90%, and a thickness of 1.1 mm, and ultrasonically clean the ITO conductive glass in deionized water, detergent, acetone, and ethanol solutions for 5 minutes. , and then dry the ITO glass with nitrogen, and treat it with an ultraviolet ozone cleaner for 20 minutes.

[0057] (2) Preparation of composite electron transport layer: 23mg of SnCl 2 2H 2 O, the graphene quantum dot of the amination of 0.5mg is dissolved in the ethanol solution of 1mL (the concentration of aminated graphene quantum dot is 0.06wt%, the concentration of stannous chloride is 2.4wt%, tin dichloride and amino The mass ratio of graphene quantum dots is 38:1), after the solution is completely dissolved, the solution is spin-coated on the ITO ...

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Abstract

The invention discloses a perovskite photovoltaic-light-emitting-photodetection multifunctional device based on a composite interface transport material and a preparation method thereof. The multifunctional device comprises a transparent conductive glass, a composite electron transport layer, a perovskite active layer, a composite hole transport layer and a metal electrode layer which are sequentially stacked from bottom to top. In the present invention, the work function of the interface transport layer is adjusted by compounding multiple interface transport materials, so that the work functions of the electron transport layer and the hole transport layer are respectively leveled with the positions of the conduction band and the valence band of the perovskite active layer. Compared with the experimental results, the photoelectric conversion efficiency and luminous efficiency of perovskite multifunctional devices after energy band regulation have been significantly improved.

Description

technical field [0001] The invention belongs to the field of perovskite optoelectronics, and specifically relates to a perovskite photovoltaic-luminescence-light detection multifunctional device based on a composite interface transport material and a preparation method thereof. Background technique [0002] In recent years, organic-inorganic halide perovskite materials have become a research hotspot in the field of optoelectronics due to their many advantages such as high light absorption coefficient, long carrier lifetime, adjustable bandgap width, and low cost. The solar cells and light-emitting diodes prepared from this material have made great progress, and gradually show good application prospects. According to the US National Renewable Energy Laboratory (NREL), the highest certified energy conversion efficiency of perovskite solar cells has reached 23.7%. As an electroluminescent material, the latest "Nature" reported that the external quantum efficiency of perovskite...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/46H01L51/54H01L51/42H01L51/50H01L51/48H01L51/56B82Y30/00
CPCB82Y30/00H10K71/12H10K50/115H10K50/155H10K50/165H10K2102/00H10K30/50H10K30/40C09K11/661C09K11/025B82Y20/00H10K50/156H10K50/166H10K2102/331H10K85/50B82Y40/00H10K30/35H10K50/15H10K50/16H10K71/00
Inventor 严克友谢江生
Owner GUANGDONG ZHIDA INUOWEI TECH CO LTD
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