Stable copper‐based 2D perovskite (NH3C3H6NH3)CuBr4 thin film processed from green solvent for thermoelectric application
Zhenjing Kang,
Hao Xiong,
Bo Wu,
Linqin Jiang,
Baodian Fan,
Aijun Yang,
Baisheng Sa,
Jiansheng Li,
Lingyan Lin,
Yu Qiu
Affiliations
Zhenjing Kang
Key Laboratory of Green Perovskites Application of Fujian Province Universities, College of Electronic Information Science Fujian Jiangxia University Fuzhou China
Hao Xiong
Key Laboratory of Green Perovskites Application of Fujian Province Universities, College of Electronic Information Science Fujian Jiangxia University Fuzhou China
Bo Wu
Multiscale Computational Materials Facility, School of Materials Science and Engineering Fuzhou University Fuzhou China
Linqin Jiang
Key Laboratory of Green Perovskites Application of Fujian Province Universities, College of Electronic Information Science Fujian Jiangxia University Fuzhou China
Baodian Fan
Key Laboratory of Green Perovskites Application of Fujian Province Universities, College of Electronic Information Science Fujian Jiangxia University Fuzhou China
Aijun Yang
PV Metrology Institute, Fujian Metrology Institute Fuzhou China
Baisheng Sa
Multiscale Computational Materials Facility, School of Materials Science and Engineering Fuzhou University Fuzhou China
Jiansheng Li
PV Metrology Institute, Fujian Metrology Institute Fuzhou China
Lingyan Lin
Key Laboratory of Green Perovskites Application of Fujian Province Universities, College of Electronic Information Science Fujian Jiangxia University Fuzhou China
Yu Qiu
Key Laboratory of Green Perovskites Application of Fujian Province Universities, College of Electronic Information Science Fujian Jiangxia University Fuzhou China
Abstract Great achievements about lead‐based halide perovskites have been made in the fields of photovoltaic solar cells, light emitting diodes, photodetectors, and thermoelectric devices. However, the toxicity and instability of lead‐based materials hinder their practical application. Herein, we used propane‐1,3‐diammonium cation to construct a copper‐based halide perovskite material (NH3C3H6NH3)CuBr4 with a two‐dimensional layered structure. This material exhibits a suitable bandgap of 1.71 eV for a broad‐band absorption. Dense and flexible (NH3C3H6NH3)CuBr4 thin film can be obtained by simple spin‐coating of the solution using green solvent DMSO. Furthermore, (NH3C3H6NH3)CuBr4 shows excellent stability towards temperature, humidity and UV‐light. Finally, the (NH3C3H6NH3)CuBr4 thin film shows a reasonable Seebeck coefficient of −13.8 μV K−1 and a power factor of 1.70 μW m−1 K−2 at 298 K, demonstrating the great potential for flexible n‐type thermoelectric application.
