Engineering the Hole Extraction Interface Enables Single-Crystal MAPbI3 Perovskite Solar Cells with Efficiency Exceeding 22% and Superior Indoor Response

被引：144

作者：

Li, Ning ^{[1
]}

Feng, Anbo ^{[1
]}

Guo, Xinbo ^{[1
]}

Wu, Jinming ^{[1
]}

Xie, Shengdan ^{[1
]}

Lin, Qinglian ^{[1
]}

Jiang, Xiaomei ^{[1
]}

Liu, Yang ^{[1
]}

Chen, Zhaolai ^{[1
,2
]}

Tao, Xutang ^{[1
]}

机构：

[1] Shandong Univ, Inst Crystal Mat, State Key Lab Crystal Mat, 27 Shanda South Rd, Jinan 250100, Peoples R China

[2] Shandong Univ, Suzhou Res Inst, Suzhou 215123, Peoples R China

来源：

ADVANCED ENERGY MATERIALS | 2022年 / 12卷 / 07期

基金：

中国国家自然科学基金;

关键词：

indoor photovoltaics; interface engineering; perovskite single crystals; perovskite solar cells; trap passivation; HALIDE PEROVSKITES; WAFERS; GROWTH;

D O I：

10.1002/aenm.202103241

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Perovskite single crystals have recently been regarded as emerging candidates for photovoltaic application due to their improved optoelectronic properties and stability compared to their polycrystalline counterparts. However, high interface and bulk trap density in micrometer-thick thin single crystals strengthen unfavorable nonradiative recombination, leading to large open-circuit voltage (V-OC) and energy loss. Herein, hydrophobic poly(3-hexylthiophene) (P3HT) molecule is incorporated into a hole transport layer to interact with undercoordinated Pb2+ and promote ion diffusion in a confined space, resulting in higher-quality thin single crystals with reduced interface and bulk defect density, suppressed nonradiative recombination, accelerated charge transport, and extraction. As a result, a remarkably enhanced V-OC of up to 1.13 V and efficiency of 22.1% are achieved, which are both the highest values for MAPbI(3) single-crystal solar cells. Moreover, the reduced defect density and suppressed carrier recombination lead to superior weak light response of the single-crystal solar cells after incorporation of P3HT, and an indoor photovoltaic efficiency of 39.2% at 1000 lux irradiation is obtained.

引用

页数：10

共 46 条

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