A hybrid solar cell based on the integration of multiple heterojunction properties and a preparation method thereof

A solar cell and heterojunction technology, applied in the field of hybrid solar cells and its preparation, can solve the problems of short diffusion length of polymer excitons and severe interfacial charge recombination, reduce the degree of interfacial charge recombination, and improve photogenerated current , to overcome the effect of short diffusion length

Inactive Publication Date: 2019-01-22
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the present invention is exactly for existing TiO 2 Short polymer exciton diffusion length and polymer / TiO 2 Interfacial charge recombination seriously deficiencies in these two key structure and performance, providing a hybrid solar cell based on the integration of multiple heterojunction properties and its preparation method

Method used

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  • A hybrid solar cell based on the integration of multiple heterojunction properties and a preparation method thereof
  • A hybrid solar cell based on the integration of multiple heterojunction properties and a preparation method thereof
  • A hybrid solar cell based on the integration of multiple heterojunction properties and a preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Etching and cleaning of ITO conductive glass:

[0042] First put the ITO conductive glass (size is 3×3cm 2 , ≤15Ω / □) with hydrochloric acid and Zn powder with a concentration of 6mol / L to etch the ITO layer into four strips of 16×4mm 2 The thin strips were ultrasonically cleaned with acetone, isopropanol, and ultrapure water for 5 minutes in sequence, and then dried with dry nitrogen to obtain etched ITO conductive glass deposition for later use.

[0043] TiO 2 Preparation of nanostructured films:

[0044] Mix absolute ethanol, n-butyl titanate, and glacial acetic acid at a volume ratio of 4:1:0.1 to prepare uniform, colorless, and transparent TiO 2 Sol precursor. 150 μL of TiO 2 The sol precursor liquid is dropped on the etched ITO conductive glass, and spin-coated (2000 rpm, 30 seconds) to obtain TiO 2 Sol film; the TiO 2 After the sol film was stored at room temperature in a humidifier with a relative humidity of 50% for 12 hours, it was placed in an air-atmos...

Embodiment 2

[0052] Preparation of PTB7-th:ITIC blend films:

[0053] Using chlorobenzene as a solvent, prepare a solution of PTB7-th: ITIC with a total concentration of 10 mg / mL at a ratio of 1:1, and stir at 40°C for 12 hours to obtain a PTB7-th: ITIC blended chlorobenzene solution; Li PTB7-th:ITIC blend solution uniformly dispersed in TiO 2 - on the CdS heterojunction thin film layer, and then spin coating (1500 rpm, 60 seconds) to deposit the polymer onto the TiO 2 - On CdS heterojunction films; heat treatment at 100 °C for 10 min in a nitrogen-protected glove box to make the polymer and TiO 2 -CdS heterojunction film with sufficient contact.

[0054] In addition, the PTB7-th: ITIC blend film, PTB7-th film and ITIC film were prepared on the glass substrate with the same spin-coating method by the same method for testing their basic photophysical properties; , the concentration of the chlorobenzene solution of PTB7-th and ITIC used is also 10mg / mL.

[0055] TiO 2 -CdS / PTB7-th: Fabr...

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PUM

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Abstract

The invention discloses a hybrid solar cell based on the integration of multiple heterojunction properties and a preparation method thereof, A solar cell comprises an organic blend heterojunction filmcomposed of an anode, a TiO2 nano-structure film and a CdS nano-structure film, an organic conjugated polymer and an organic conjugated small molecule, an inorganic hole transport layer and a cathodedeposited on a glass substrate in this order. As that battery of the invention realize the inorganic flat-plate heterojunction, the performance integration of hybrid plate heterojunction and organicheterojunction, It overcomes the bottleneck of hybrid solar cells composed of TiO2 nanostructured thin films and pure organic conjugated polymers, has laminated structure, simple preparation method ofkey materials and devices, low equipment requirements, and is very suitable for large-scale preparation. the hybrid solar cell has great application value in the field of low-cost thin film solar cells.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials and energy, and in particular relates to a hybrid solar cell based on the performance integration of various heterojunctions and a preparation method thereof. Background technique [0002] Converting solar energy into electrical energy and realizing photovoltaic power generation is an important way to utilize renewable energy. The most critical part of the photovoltaic power generation system is the device that captures solar photons and realizes photoelectric conversion, that is, the solar cell. The photoactive layer of a solar cell is usually composed of a heterojunction thin film composed of n-type semiconductor and p-type semiconductor. It is the region where light is absorbed and free charges are generated. It plays a decisive role in the photoelectric conversion process of the cell and is the key to the solar cell. Material. The n-type semiconductor film and the p-type semiconductor ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48B82Y10/00B82Y30/00
CPCB82Y10/00B82Y30/00H10K30/151H10K2102/101H10K2102/00Y02E10/549
Inventor 赵秋原王命泰陈王伟彭瑞祥齐娟娟
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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