journal article·2022-10-14

SnOx as Bottom Hole Extraction Layer and Top In Situ Protection Layer Yields over 14% Efficiency in Sn-Based Perovskite Solar Cells

Liang Wang, Mengmeng Chen, Shuzhang Yang, Namiki Uezono, Qingqing Miao, Gaurav Kapil, Ajay Kumar Baranwal, Yoshitaka Sanehira, Dandan Wang, Dong Liu, Tingli Ma, Kenichi Ozawa, Takeaki Sakurai, Zheng Zhang, Qing Shen, Shuzi Hayase

ACS Energy Letters· Volume 7· Issue 10
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Abstract

Sn-based perovskite solar cells (S-PSCs) are a promising candidate to replace toxic Pb-based PSCs. For promoting their industrial application, developing inorganic substitutions of unstable poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) is also an important part due to its intrinsic stability and low cost. Here, we in situ prepared ambipolar SnOx by a simple and fast plasma-assistant strategy (P-SnOx). The as-prepared P-SnOx works as a hole transport layer directly, yielding a 10.89 ± 0.51% power conversion efficiency (PCE) comparable to a PEDOT:PSS-based device (10.39 ± 0.72%). The top SnOx (T-SnOx), composed of SnO2 and Sn metal, as a modifier and a protection layer of the perovskite by reducing Sn4+ to Sn2+, gives a 13.08 ± 0.33% device performance. This in situ top protective strategy combined with P-SnOx as a hole transport layer further boosts the champion PCE of S-PSCs to 14.09% (13.5 ± 0.32%).
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Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Light-Emitting Diodes Research

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

info-Powered Energy System Research Center (i-PERC), The University of Electro-Communications, Tokyo182-8585, Japan

Institute of Optoelectronics, Fudan University, Shanghai200438, P.R. China

Faculty of Pure and Applied Science, University of Tsukuba, Tsukuba305-8557, Japan

CAS Key Laboratory of Green Process and Engineering, Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing100190, P.R. China

Langfang Institute of Process Engineering, CAS, Langfang065001, P.R. China

Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka804-8550, Japan

Inter-University Research Institute Corporation, High Energy Accelerator Research Organization, Tsukuba305-0801, Japan

Funding

Youth Innovation Promotion Association of the Chinese Academy of Sciences · Japan Society for the Promotion of Science · Japan Science and Technology Agency · National Natural Science Foundation of China

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