Abstract
Because of the toxicity and stability concerns, commercialization of lead-based perovskite solar cells (PSCs) is limited. Solar cells made entirely of Ti-based all-inorganic perovskite could be a viable answer to these issues. This paper is a theoretical paper on a perovskite solar cell (PSC) based on Cs2TiI6 using all-inorganic charge transport materials. We proposed a high performance perovskite solar cell (PSC) according to variables such as charge transport materials and its optimal thicknesses, absorber thickness, absorber defect density and interface defect density and working temperature. The optimal absorber thickness, Hole transport layer (HTL) thickness, and Electron transport layer (ETL) thickness are 500 nm, 50 nm, and 10 nm, respectively. After analyzing the other factors, we ended up with a high-performance PSC with a power conversion efficiency of 22.5% at room temperature and 22.84% at 270 K. These results are useful for the conception and manufacture of PSCs.
Highlights
Organic-inorganic perovskite materials have been extensively explored in recent years as an alternative to silicon-based solar cells for improving device efficiency, and it are a potential alternative to silicon-based solar cells because of its lower manufacturing costs [1,2]
We have studied the impacts of defect density by varying it from 1011 cm-3 to 1016 cm-3 using selected ETM and HTM, as well as optimal Hole transport layer (HTL), Perovskite Active Layer (PAL), and Electron transport layer (ETL) thicknesses
3.6 Optimized device We achieved a high performance perovskite solar cells (PSCs) with a new combination of FTO/ZnO/CsTiI6/MoO3/Au after optimizing HTL, PAL, and ETL
Summary
Organic-inorganic perovskite materials have been extensively explored in recent years as an alternative to silicon-based solar cells for improving device efficiency, and it are a potential alternative to silicon-based solar cells because of its lower manufacturing costs [1,2]. From 2009 to 2019, the PCE (power conversion efficiency) of a typical organic-inorganic hybrid PSC (perovskite solar cell) has risen from 3.8% to over 25%. As with organic-inorganic hybrid absorber, organic charge transport become unstable in oxygen, sunlight, and humidity [10,11] Chen and his colleagues developed Cs2TiBr6 thin film Perovskites with a 3.28 % solar efficiency [12]. Upon comparing the performance parameters, e.g., short circuit Jsc (current density), Voc (open-circuit voltage), PCE (power conversion efficiency), and FF (Fill Factor), we have obtained an optimized high-performance PSC with a novel combination of FTO/ZnO/Cs2TiI6/MoO3/Au, that may aid in designing eco-friendly Ti-based perovskite solar cell for future technologies
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