Development of environmental friendly high performance Cs2TiBr6 based perovskite solar cell using numerical simulation

Abstract

The stability and toxicity problems pose a significant obstacle to the practical application of lead-based perovskite solar cells. Ti-based all-inorganic perovskite solar cells (PSCs) may be essential for the marketing of elevated PSCs under such conditions. This study investigates the theoretical viability of a Cs 2 TiBr 6 -based PSC that is efficient, lead-free, and environmentally benign. The evaluation of several electron transport layers (ETLs) and hole transport layers (HTLs) is done in an attempt to choose materials that would provide more stable and efficient PSCs. The emergence of novel Au/CuSbS 2 /Cs 2 TiBr 6 /CdS/TCO configurations is a direct result of investigating factors such as charge transport materials and their thickness, electron transport materials, absorber thickness, absorber defect density, TCO and its thickness, back metal contacts, series resistance, and shunt resistance. SCAPS-1D software is employed to optimize and analyze each composite layer in order to enable enhanced performance. An optimization results in a maximum power-conversion efficiency of 23.77% for the suggested PSC. The achieved outcomes confirmed that Cs 2 TiBr 6 can contribute significantly to the development of the highly effective lead-free all-inorganic perovskite solar cell technology.