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Deepak Singh is an assistant professor in the Department of Electrical Engineering, at Government Engineering College, Buxar under the Department of Science, Technology, and Technical Education (DSTTE), Government of Bihar, India. He obtained M.Tech. degree in Electrical Engineering from Motilal Nehru National Institute of Technology Allahabad, Prayagraj, India and pursuing Ph.D. degree from the National Institute of Technology Patna, India. His research interests include modeling and simulation of perovskite and double-perovskite solar cells, tandem photovoltaic technologies, and their applications.