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

Abstract

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 m 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 m to 0.4 m. 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.

Electron Transport Layer Material Optimization for Cs2AgBiBr6 Based Solar Cell Using SCAPS

“…In the recent past, organic-inorganic metal halide perovskite solar cells have been explored as an alternative to silicon-based solar cells for improving efficiency and are also preferred because of low manufacturing cost [6][7][8][9][10]. Lead (Pb) halide perovskites have excellent optoelectronic properties but the toxicity of Pb and poor stability are the principal reasons for not being suitable for commercial applications [11][12][13][14][15][16]. Lead-free double perovskites such as Cs2AgBiBr6 have attractive optical and electronic properties.…”

The Hole Transport Layer Material Optimization for an Efficient Lead-Free Double Perovskite Cs2AgBiBr6 Based Solar Cell by Numerical Simulation

“…In this landscape, double perovskites have recently emerged as a promising alternative exhibiting encouraging optoelectronic properties, high environmental stability, and low toxicity. In particular, the double perovskite Cs2AgBiBr6 has been the subject of much fundamental material characterization and initial application in photodetectors and photovoltaic devices [7][8][9][10][11][12][13][14].…”