Modifications in Perovskite Solar Cells to Explore Performance Enhancement, Stability and Anomalous Effects
APOORVA SINGH a, Praveen C Ramamurthy a
a Department of Materials Engineering, Indian Institute of Science, Bengaluru, 560012, Karnataka, India
Oral, APOORVA SINGH, presentation 127
Publication date: 6th February 2024

Perovskite Solar Cells have emerged only in the last decade and have experienced unprecedented interest and growth because of exceptional properties like high absorption coefficient, efficient charge carrier mobilities, solution processibility, low cost, and compatibility with roll-to-roll industrial processing. Amidst much anticipated potential and excitement around the fastest-ever-growing photovoltaic technology, challenges remain in understanding the fundamentals of charge carrier transport, material composition, and film growth dynamics. Moreover, degradation and instability remain one of the major issues impeding commercialization. Firstly, the work discusses some intriguing results that were yielded through the modifications made in the electron transfer layer (SnO2) of the solar cell devices with the chlorinated salts (Li, Na, and K) made in the classical structure of perovskite CH3NH3PbI3 [1]. Secondly, wide-bandgap compositions with CH3NH3PbBr3 and the mixed iodide-bromide system (CH3NH3PbIx Br1-x) as photoactive layers were studied to assess their viability in tandem solar cells. A substantial research component focuses on tracing these devices' degradation profiles. The performance and stability experiments attempt to utilize advanced and novel Spectroscopic procedures [2]. Finally, a few anomalous degradation pathways in the perovskite solar cells and observations made by integrating piezoceramic material in the photovoltaic architecture resembling the memory effect will be briefly introduced [3]. The insights developed will potentially assist in resolving some of the critical challenges in the field.

The authors would like to acknowledge the Ministry of Education (MoE): MoE-STARS/STARS-2/2023-0714 (dated 26-09-20230)

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