Studies on Thickness and Internal Quantum Efficiency of Cs2AgBiBr6 Based Double Perovskite Material for Photovoltaic Application

Authors S. Das , K. Chakraborty , M.G. Choudhury , S. Paul

Advanced Material Research and Energy Application Laboratory, Department of Energy Engineering, North-Eastern Hill University (NEHU), Shillong, Meghalaya-793022 India

Issue Volume 13, Year 2021, Number 3
Dates Received 21 March 2021; revised manuscript received 12 June 2021; published online 25 June 2021
Citation S. Das, K. Chakraborty, M.G. Choudhury, S. Paul, J. Nano- Electron. Phys. 13 No 3, 03018 (2021)
PACS Number(s)
Keywords SCAPS-1D (16) , Double perovskite, Solar cell (51) , Photovoltaic (13) , Optimization (14) , Electron transport layer.

The lead-free double perovskites have recently emerged as promising alternative material for solar cell application. It exhibits encouraging optoelectronic properties, high environmental stability and low toxicity. The double perovskite having two different cations are non-toxic alternatives. The double perovskite Cs2AgBiBr6 has good optical and electronic features. Therefore, it has been used for high-efficiency optoelectronic devices. In this manuscript, we report optimization of active layer thickness of double perovskite Cs2AgBiBr6 for photovoltaic application. For the study, a device FTO/TiO2/Cs2AgBiBr6/Spiro-OMeTAD/Cu was designed. The Solar Cell Capacitance Simulator (SCAPS-1D) was used for one dimensional simulation and analysis. The active layer of 0.1 to 1 μm was used for the study and PCE, Voc, Jsc and FF were obtained using simulation. The optimum active layer thickness was found to be between 0.20 μm to 0.4 μm. The maximum PCE of 3.78 % was found. The solar cell performance can be improvised further by optimizing the defect density of the active layer. Also, the effects of ETL and HTL layer thickness can be further observed for enhancement of PCE. Overall, the encouraging simulation results achieved in this study will provide insightful guidance in replacing commonly used cancerous Pb-based perovskite with eco-friendly, highly efficient inorganic perovskite solar cell.

List of References