Proceedings of Online International Conference on Hybrid and Organic Photovoltaics (OnlineHOPV20)
Publication date: 22nd May 2020
The layered bismuth tri-iodide (BiI3) perovskite has various intriguing semiconducting properties. It has a rich structural diversity in the inorganic framework arising from the different degrees of distortion of bismuth iodide octahedra. Taking advantage of the intermediate bandgap, high density, and high effective atomic number, it has been used for room temperature gamma-ray detection, scintillation and x-ray digital imaging. In addition, the material has also found potential applications in photodetectors, LEDs and perovskite solar cells. Herein we present the computational studies as well as experimental results of BiI3 thin film obtained via a scalable ultrasonic spray cast route. The density functional calculations reveal the nature of electronic states contributing to the formation of bandgap in correlation with the experimental results.
The authors acknowledge the economic support from Consejo Nacional de Ciencia y Tecnología, Mexico (CONACYT) through a project (No: C.B. 284800) for the present research. Sebin Devasia is grateful to CONACYT, Mexico for the doctoral fellowship.
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