期刊
OPTICAL MATERIALS
卷 124, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.optmat.2022.111998
关键词
Cu2ZnSnS4; Hole transporting material; Inverted perovskite solar cells; Coating; Semiconductors
资金
- Science and Technology Development Fund (STDF), Egypt [25250]
Apart from perovskite crystallization, the hole transport layer (HTL) plays a significant role in regulating charge transportation for inverted perovskite solar cells (PSCs). In this study, effective p-i-n PSCs based on a solid solution-coating of Kesterite Cu2ZnSnS4 (CZTS) as HTL were demonstrated in both air and nitrogen environments. The CZTS-HTL based on N-2 annealing achieved higher hole extraction efficiency and a substantial improvement in power conversion efficiency (PCE) compared to air-annealed devices.
Aside from perovskite crystallization effectuation, the hole transport layer (HTL) acting a significant role in regulating charge transportation for inverted perovskite solar cells (PSCs). Herein, we show effective p-i-n PSCs based on solid solution-coating Kesterite Cu2ZnSnS4 (CZTS) by one-step heating as HTL in an air (O-2) and nitrogen (N-2) environment. The spin-coating method is optimized to produce CZTS-HTL with the necessary phase purity and optimum film coverage. In comparison to the O-2 environment, photoluminescence (PL) tests show that the CZTS-HTL based on N-2 delivers better hole extraction. The N-2 annealing environment achieves a substantial power conversion efficiency (PCE) of 13.95% for CZTS-HTL based inverted PSC, compared to 9.43% for air-annealed devices.
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