Suitability of K-doped (CH(NH2)2)x(CH3NH3)1-xPbI3 Perovskite Absorber for Energy Harvesting

Indian Journal of Pure & Applied Physics

article

Harpreet Singh¹  Shweta Dhakla³  Parvesh K Deendyal³  Anand Kumar¹  Sarvesh Kumar⁵  Manish K Kashyap³ 

[1] Department of Physics, Institute of Integrated and Honors Studies, Kurukshetra University;Department of Physics, Kurukshetra University;Renewable Energy Laboratory, School of Physical Sciences, Jawaharlal Nehru University;Government Polytechnic for Women;Inter-University Accelerator Centre

关键词: Perovskite absorber;    Solar cells;    Thermal stability;    UV-Vis absorption;    Article;   

DOI  :  10.56042/ijpap.v61i10.2460

来源: National Institute of Science Communication and Information Resources

【 摘 要 】

Formamidinium lead iodide (FAPbI3) based perovskite solar cells are more promising than methylammonium based counterparts due to their higher thermal stability. But FAPbI3 film faces serious issue of photoactive phase instability at room temperature, hindering its usefulness as absorber in perovskite solar cells (PSCs). Recently, this problem has been well addressed through additive engineering. In this work, monovalent-cation engineering of FAPbI3 perovskite via MA+ (methylamine cation) and K+ (potassium cation) mixing is performed. We present a detailed analysis of effect of cation doping on structural and optical properties of formamidine based perovskite material. The structural and optical characterizations show positive effect of cation mixing on phase stabilization, crystallization, and absorbance of perovskite thin films. The crystallite size is found to increase on doping with a maximum for K0.05(FA0.83MA0.17)0.95PbI3 sample. Also, the rise in absorbance in UV-Visible region of electromagnetic spectra is observed with doping.

【 授权许可】

Unknown