A novel design of high efficiency perovskite solar cell using electron reflector strategy and transport layers optimization
Department of Electrical Engineering, Imam Reza International University, Mashhad, Iran
Accepted: 23 July 2021
Published online: 6 September 2021
Electron reflectors are a proposed method to improve the VOC of solar cells by forming a barrier in the conduction band to decline the electron's contact with the back surface. The electron reflector can be created by a back layer with an extended bandgap, a reversed back-barrier, or a high doping back surface. In this paper, we investigated the performance of a perovskite solar cell to achieve an optimized structure using the electron reflection strategy, variety of thickness, doping, and material of the electron transport layer, the hole transport layer, and the absorber layer. Three types of architectures are examined. Under global AM 1.5G conditions, the final proposed cell structure had an VOC of 1.03 V, a short-circuit current density of 25.99 mA/cm2, and a fill factor 84.1%, corresponding to a total area conversion efficiency of 22.62%.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2021