Wide-spectrum self-driven inorganic perovskite photoelectric detector and preparation method thereof

A photodetector and perovskite technology, applied in the field of photodetectors, can solve the problems of insufficient response range of perovskite materials, limited development, poor stability of hybrid perovskites, etc., to achieve huge potential application value, promote Separation and transfer, the effect of sufficient raw material

Active Publication Date: 2020-01-03
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the response range of perovskite materials is not wide enough, and the stability of hybrid perovskite is poor, which also limits its further development.

Method used

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  • Wide-spectrum self-driven inorganic perovskite photoelectric detector and preparation method thereof
  • Wide-spectrum self-driven inorganic perovskite photoelectric detector and preparation method thereof
  • Wide-spectrum self-driven inorganic perovskite photoelectric detector and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0046] (1) Clean the ITO conductive glass ultrasonically for 20 minutes in the order of acetone, alcohol and deionized water. After drying the cleaned conductive glass, treat it with ultraviolet and ozone for 20 minutes, and use a pipette to measure 0.05mL of SnO 2 The precursor solution was spin-coated on the conductive glass, the spin-coating speed was 5000 rpm, the acceleration was 1000 rpm, and the spin-coating time was 30s. Then, place the spin-coated sample on a heating platform at 60°C for 30 minutes to form a layer of SnO on the surface of the conductive substrate. 2 film.

[0047] (2) Add 0.085 g of cesium bromide and 0.147 g of lead bromide into 1 mL of DMSO, stir at 70° C. for 3 hours, and react to obtain a yellow, transparent and uniform perovskite precursor solution. Use a pipette gun to measure 0.05 mL of the perovskite precursor solution and spin-coat it on the sample prepared in step (1), and then immediately use DVD-R as a template for imprinting, the imprin...

Embodiment 2

[0052] Composite photodetectors were prepared according to the method of steps (1)-(3) of Example 1, the difference being that the quality of PDPP3T and P3HT in step (3) was reduced to 1 mg and 5 mg respectively. The performance of the prepared composite photodetector is slightly lower than that in Example 1.

Embodiment 3

[0054] A composite photodetector was prepared according to the method of steps (1)-(3) of Example 1, with the difference that the embossing temperature in step (2) was lowered to 160°C. The performance of the prepared composite photodetector is slightly lower than that in Example 1.

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Abstract

The invention relates to a wide-spectrum self-driven perovskite photoelectric detector and a preparation method thereof. The wide-spectrum self-driven perovskite photoelectric detector comprises a conductive substrate, an electron transport layer, a lead-based perovskite nano concave-convex structure, an organic conjugated polymer layer and an electrode layer which are arranged in sequence, and the organic conjugated polymer layer is made of PDPP3T and / or P3HT. The preparation method comprises the following steps: forming an oxide layer on the surface of a conductive substrate; spin-coating the surface of the oxide layer with a precursor solution of a lead-based perovskite material, and forming a lead-based perovskite nano concave-convex structure by adopting an imprinting technology; andsequentially forming an organic conjugated polymer layer and an electrode layer on the surface of the lead-based perovskite nano concave-convex structure, the organic conjugated polymer layer being made of PDPP3T and / or P3HT. The preparation method of the photoelectric detector is simple, and the photoelectric detector has self-driving performance and an appropriate energy band structure. Electron-hole pair separation can be improved, the light absorption and utilization rate is high, and the performance of the photoelectric detector is improved.

Description

technical field [0001] The invention relates to the field of photodetectors, in particular to a wide-spectrum self-driven perovskite photodetector and a preparation method thereof. Background technique [0002] Over the past century, with the rapid development of science and technology, the demand for energy has also increased rapidly. But at present, non-renewable traditional energy (coal, oil, natural gas) still occupies a dominant position (>85%) in the world, and its proportion exceeds 90% in my country. At the same time, it should be noted that in my country's energy structure, coal energy, which is the most polluting to the environment, is as high as 60%, which is much higher than the 29% in the world's energy structure. my country is a country that consumes a lot of energy. The environmental problems caused by such an unreasonable energy structure are particularly serious, and the potential damage to the economy is huge. At the same time, it will also have an inev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48B82Y15/00B82Y30/00B82Y40/00
CPCB82Y15/00B82Y30/00B82Y40/00H10K30/15H10K2102/00Y02E10/549
Inventor 曹风人李亮田维
Owner SUZHOU UNIV
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