journal article·2024-02-12

Ammonium Thiocyanate Enhanced High-Performance Quasi-Two-Dimensional Perovskite Solar Cells

Wenqiang Li, Shuo Ding, Jingcheng Xu, Chunyan Wu, Xinjian Li, Lei Qian, Hao Chen, Xinyu Zhang, Kai Kang, Chaoyu Xiang

ACS Applied Energy Materials· Volume 7· Issue 3
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Abstract

The quality of the tin oxide (SnO 2 )/perovskite interface has become eminently critical for high-efficiency and stable quasi-two-dimensional (Q2D) perovskite solar cells (PSCs). Based on this, we propose the application of a multifunctional passivator, ammonium thiocyanate (NH 4 SCN), to treat the SnO 2 /perovskite interface of Q2D PSCs. It can passivate oxygen vacancies effectively by the interaction of the highly electronegative thiocyanate with uncoordinated Sn, thereby reducing interfacial defects and regulating energy levels. In addition, the use of NH 4 SCN improves the wettability of perovskite precursors on tin oxide films, thus enhancing the quality of perovskite films. The strategy of NH 4 SCN interfacial passivation shows better energy level matching and consequently a higher photoelectric conversion efficiency (PCE) compared to the conventional method as an additive. The improved devices achieved a maximum PCE of 21.96%, an impressive stability of sustaining 90% of the initial PCE after 3000 h in the ambient condition.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Electronics and Photovoltaics

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

Affiliations

Division of Functional Materials and Nanodevices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China

Laboratory of Advanced Nano-Optoelectronic Materials and Devices, Qianwan Institute of CNITECH, Ningbo 315300, China

Department of Mechanical, Materials, and Manufacturing Engineering, University of Nottingham Ningbo China, Ningbo, Zhejiang 315100, China

Nano Science and Technology Institute, University of Science and Technology of China, Hefei, Anhui 230026, China

Zhejiang Provincial Engineering Research Center of Energy Optoelectronic Materials and Devices, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

Funding

National Key Research and Development Program of China · Ningbo Municipal People's Government · National Natural Science Foundation of China · Natural Science Foundation of Zhejiang Province · Ningbo 3315 Programme

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