Effect of structural and temperature variations on perovskite/Mg 2 Si based monolithic tandem solar cell structure
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Effect of structural and temperature variations on perovskite/Mg2Si based monolithic tandem solar cell structure Anisha Pathania1 · Jaya Madan1 · Rahul Pandey1 · Rajnish Sharma1 Received: 12 March 2020 / Accepted: 24 June 2020 © Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Perovskite being a wide bandgap material has shown profound impact as an active material for the use of top cell in the tandem solar cell. However, finding a suitable low-bandgap material for the bottom cell of the perovskite associated tandem solar cell has always been a concern for researchers. Over the last decade, several materials for designing of the bottom cell have been reported as a combination to perovskite for superior efficiency. In this paper, a novel perovskite/Mg2Si based monolithic tandem solar cell is reported through numerical simulations using AFROS-HET v2.5. The reported device shows 25% efficiency prior to optimization. However, the structure of the device has been optimized to obtain better results in terms of efficiency by varying active layer thickness and using different electron/hole transport materials. About 8% improvement in efficiency has been noticed by the selection of optimum design parameters. Further, to account for the temperature reliability of the proposed design, the device is simulated for a temperature range of 300 K–450 K. This study highlights a drop-in open-circuit voltage (VOC) by a factor of about 0.1 V with an increase in temperature by about 50 K. Results clearly establish that structural and temperature variations significantly affect overall device performance. Results have been suitably analyzed so as to set a roadmap for further research work in this direction and explore the best of the characteristics of this unique tandem solar cell structure. Keywords AFORS-HET · Mg2Si · Monolithic · Perovskite · Simulation · Tandem solar cell
1 Introduction Access to a variety of clean and sustainable energy source has always been a prime requirement for the growth of humanity on this planet. The solar cell as a source of clean and green energy has shown immense potential to fulfil this demand and supply gap [1]. Recently developed lead halidebased perovskite (MAPbI3) material has shown remarkable progress as a good absorbing material for the solar cell * Jaya Madan [email protected] * Rahul Pandey [email protected] * Rajnish Sharma [email protected] Anisha Pathania [email protected] 1
VLSI Centre of Excellence, Chitkara University Institute of Engineering and Technology, Chitkara University, Punjab, India
applications with a phenomenal increase in efficiency. Sustained research efforts have helped in increasing the efficiency from 4% in 2009 [2] to about 23% in 2019 [3] with this material. These kinds of promising results have definitely given researchers a great ray of hope so as to think of alternatives to a single crystal-based silicon solar cell, which has otherwise been dominating the market since about 1975 or
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