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Perovskite solar cell

A solar cell and perovskite technology, applied in the field of solar cells, can solve the problem of in-depth bulk equivalence, and achieve the effect of optimizing crystallinity

Pending Publication Date: 2022-04-29
仁烁光能(苏州)有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the commonly used modification layer is to use a single modifier to improve the performance of perovskite solar cells. However, a single interface modifier only modifies the surface of perovskite, and it is difficult to passivate the defects in the bulk phase.

Method used

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Embodiment 1

[0032] The structure of the perovskite solar cell of the present embodiment is as follows figure 1 As shown, its preparation process is as follows:

[0033] 1. Deposit a layer of [2-(3,6-dimethoxy-9H-carbazol-9-yl) ethyl]phosphonic acid on the cleaned ITO substrate as a hole transport layer;

[0034] 2. Deposit a layer of FA on the hole transport layer 0.8 Cs 0.15 MA 0.05 Pb(I 0.82 Br 0.18 ) perovskite, the thickness is 500nm;

[0035] 3. Deposit a mixed interface modification layer on the perovskite layer, dissolve phenylethylamine iodide (PEAI) and methylamine thiocyanate (MASCN) in isopropanol as interface modifiers and deposit on the perovskite layer, at 100 °C Anneal on a hot plate for 5 minutes;

[0036] At the same time, no interface modification layer was deposited as a blank, and a single interface modification agent phenylethylamine iodide (PEAI) was deposited as a control;

[0037] 4. Use thermal evaporation to evaporate a layer of fullerene (C60) as the ele...

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Abstract

The invention discloses a perovskite solar cell, and belongs to the technical field of solar cells. The perovskite solar cell comprises a perovskite layer, an interface modification layer is arranged on the surface of the perovskite layer, and the interface modification layer is made of a passivator and a modifier. The passivating agent is selected from one or more of 2-phenylethylamine hydriodate, 2-phenylethylamine hydrochloride, benzylamine hydrochloride, benzylamine hydriodate, butylamine hydrobromide, ethylenediamine hydrochloride, ammonium halide, guanidine halide, tetramethyl guanidine fluoborate or alkali metal halide salt; the modifier is selected from one or more of ammonium thiocyanate, formamidine thiocyanate, halogenated methylamine, halogenated formamidine, methylamine acetate, formamidine acetate, formamidine formate, methylamine formate, methylamine cyanate or formamidine cyanate. By using the mixed passivator composed of the passivator and the modifier, the crystallinity of perovskite can be effectively improved, surface defects are passivated, the performance of the perovskite solar cell is improved, and the stability of a device is improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a perovskite solar cell. Background technique [0002] Perovskite solar cells are the type of cells with the fastest efficiency improvement among the third-generation new thin-film solar cells. It only took more than ten years for their single-junction efficiency to increase from 3.8% to 25.5%. Perovskite materials are also considered to be the most promising light-absorbing materials for next-generation low-cost solar cells. [0003] In the prior art, the bottleneck of the commercialization of perovskite batteries is mainly limited to the lack of stability and efficiency of the battery, which cannot meet the requirements of commercialization. Moreover, the lack of efficiency and poor stability are mainly due to surface and internal defects, and it is difficult for commonly used interface modifiers to penetrate into bulk passivation defects. In addition, a single...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46
CPCH10K85/30H10K30/00H10K30/88Y02E10/549
Inventor 谭海仁朱长淮刘洲
Owner 仁烁光能(苏州)有限公司
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