Stable copper‐based 2D perovskite (NH3C3H6NH3)CuBr4 thin film processed from green solvent for thermoelectric application

EcoMat

卷:4

Zhenjing Kang¹  Hao Xiong¹  Yu Qiu¹  Baodian Fan¹  Linqin Jiang¹  Lingyan Lin¹  Bo Wu²  Baisheng Sa²  Jiansheng Li³  Aijun Yang³ 

[1] Key Laboratory of Green Perovskites Application of Fujian Province Universities, College of Electronic Information Science Fujian Jiangxia University Fuzhou China;

[2] Multiscale Computational Materials Facility, School of Materials Science and Engineering Fuzhou University Fuzhou China;

[3] PV Metrology Institute, Fujian Metrology Institute Fuzhou China;

关键词: copper‐based perovskite;    green solvent;    high stability;    thermoelectric conversion;    two‐dimensional material;   

DOI  :  10.1002/eom2.12163

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown