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An integrated solar cell based on a perovskite solar cell and a bulk heterojunction solar cell and its preparation method

A solar cell and bulk heterojunction technology, applied in the field of solar cells, can solve the problems of less absorption than perovskite materials, and achieve the effect of simple and easy method, improved short-circuit current and energy conversion efficiency, and good application prospects.

Active Publication Date: 2017-08-25
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Organic materials with narrow band gaps can absorb a wider range of sunlight, but absorb less light at shorter wavelengths than perovskite materials

Method used

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  • An integrated solar cell based on a perovskite solar cell and a bulk heterojunction solar cell and its preparation method
  • An integrated solar cell based on a perovskite solar cell and a bulk heterojunction solar cell and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] First PEDOT:PSS (Clevios TM P VP AI 4083) was spin-coated on the surface of pretreated ITO glass at a speed of 4000rpm, and heated at 150°C in air for 10min to obtain a 30nm thick PEDOT:PSS film; CH with a molar ratio of 3:1 3 NH 3 I and PbCl 2 Mix and dissolve in DMF to obtain a solution with a concentration of 20wt%, spin-coat it on the PEDOT:PSS film at a speed of 3000rpm in a glove box, and heat at 80°C for 120min to obtain a 100nm CH 3 NH 3 PB 3-x Cl x film; combining PDPP3T and PC 61 BM was mixed and dissolved in chlorobenzene or other solvents at a mass ratio of 1:2 to obtain a solution with a total concentration of 8 mg / mL, which was spin-coated on CH at a speed of 1200 rpm. 3 NH 3 PB 3-x Cl x On the thin film, a 30nm organic blend layer is obtained; in high vacuum (-4 Pa), vapor-deposit 0.5nm fluoride and 70nm aluminum electrodes to complete the battery preparation. After testing, the battery efficiency is 11.5%.

Embodiment 2

[0054] First PEDOT:PSS (Clevios TM P VP AI 4083) was spin-coated on the surface of pretreated ITO glass at a speed of 4000rpm, and heated at 150°C in air for 10min to obtain a 30nm thick PEDOT:PSS film; CH with a molar ratio of 3:1 3 NH 3 I and PbCl 2 Mix and dissolve in DMF to obtain a solution with a concentration of 30wt%, spin-coat it on the PEDOT:PSS film at 3000rpm in a glove box, heat at 90°C for 90min, and obtain a 150nm CH 3 NH 3 PB 3-x Cl x film; PMDPP3T and PC 61 BM was mixed and dissolved in chlorobenzene or other solvents at a mass ratio of 1:1.5 to obtain a solution with a total concentration of 12 mg / mL, which was spin-coated on CH at a speed of 1200 rpm. 3 NH 3 PB 3-x Cl x On the thin film, a 50nm organic blend layer is obtained; in high vacuum (-4 Pa), vapor-deposit 0.8nm fluoride and 100nm aluminum electrodes to complete the battery preparation. After testing, the battery efficiency is 11.1%.

Embodiment 3

[0056] First PEDOT:PSS (Clevios TM P VP AI 4083) was spin-coated on the surface of pretreated ITO glass at a speed of 4000rpm, and heated at 150°C in air for 10min to obtain a 30nm thick PEDOT:PSS film; CH with a molar ratio of 3:1 3 NH 3 I and PbCl 2 Mix and dissolve in DMF to obtain a solution with a concentration of 50wt%, spin-coat it on the PEDOT:PSS film at 3000rpm in a glove box, heat at 100°C for 60min, and obtain a 400nm CH 3 NH 3 PB 3-x Cl x film; PMDPP3T and PC 71BM was mixed and dissolved in chlorobenzene or other solvents at a mass ratio of 1:4 to obtain a solution with a total concentration of 20 mg / mL, which was spin-coated on CH at a speed of 1200 rpm. 3 NH 3 PB 3-x Cl x On the thin film, a 120nm organic blend layer is obtained; in high vacuum (-4 Pa), evaporating 10nm calcium and 150nm aluminum electrodes to complete the battery preparation. After testing, the battery efficiency is 12.2%.

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Abstract

The invention relates to an integrated solar cell based on a perovskite solar cell and a bulk heterojunction solar cell and a preparation method thereof. The integrated solar cell includes, from bottom to top, a transparent electrode, a hole transport layer, a perovskite light-absorbing layer, an organic blend layer, optionally a hole blocking layer and a metal electrode. The present invention makes up for the shortcomings of the narrow light absorption range of the perovskite solar cell and the weak absorption of the narrow bandgap body heterojunction solar cell in the visible light region by preparing the perovskite solar cell and the bulk heterojunction solar cell into an integrated cell. , improves the utilization range of sunlight and improves energy conversion efficiency. This kind of integrated battery has similar characteristics to parallel batteries. The conversion efficiency can break through the theoretical limit of single-junction solar cell energy conversion efficiency, and has good application prospects.

Description

Technical field [0001] The invention relates to the field of solar cells, and in particular to an integrated solar cell based on a perovskite solar cell and a bulk heterojunction solar cell and a preparation method thereof. Background technique [0002] In recent years, the energy crisis has become increasingly serious. Finding new alternative energy sources is an urgent problem for mankind. As an important way to solve energy problems, solar cells have always been a research hotspot. [0003] After more than 60 years of development, solar cells have come in many different types. Mainly include silicon-based solar cells, thin-film solar cells (such as gallium arsenide, cadmium telluride and copper indium gallium selenide) and third-generation solar cells represented by dye-sensitized, quantum dot, and bulk heterojunction solar cells. Although monocrystalline / polycrystalline silicon solar cells are widely used, their production costs are high. Other types of solar cells ar...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K85/111H10K85/30H10K30/20Y02E10/549Y02P70/50
Inventor 左传天丁黎明
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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