Bulk and interface recombination in planar lead halide perovskite solar cells: A Drift-Diffusion study |
| |
| Affiliation: | 1. School of Materials Science and Engineering, Shandong Jianzhu University, 250101 Jinan, PR China;2. Science and Technology on Power Beam Processes Laboratory, Beijing Key Laboratory of High Power Beam Additive Manufacturing Technology and Equipment, Aeronautical Key Laboratory for Additive Manufacturing Technologies, AVIC Manufacturing Technology Institute, 100024 Beijing, PR China;1. School of Physics, Beijing Institute of Technology, Beijing 100081, China;2. School of Physical Science and Information Engineering, Liaocheng University, Liaocheng 252059, China;1. Department of Mathematics, Quaid-I-Azam University, Islamabad 44000, Pakistan;2. Nonlinear Analysis and Applied Mathematics (NAAM) Research Group, Department of Mathematics, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia;1. School of Science, Nantong University, Nantong, Jiangsu, 226007, China;2. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China |
| |
| Abstract: | A theoretical approach based on Drift-Diffusion equations is presented to study planar mixed lead halide perovskite solar cells. Updated physical parameters such as permittivity, mobility, effective density of states and doping density is employed in simulations. Current-voltage curve data for two experimental sample is imported and through fitting with the model, density of bulk and interface defects is calculated. We obtain the bulk defect density around 1016 cm−3 and surface recombination velocities in the range of 10 cm/s. These values which are in good agreement with experimental measurements and considerably deviated from previous theoretical studies, verify the model and adopted constants. Shockley-Queisser limit is also presented as the ideal device and the effect of bulk and interface defects are presented as loss factors that cause departure from this limit. Our simulations conclude that the overall efficiency of perovskite solar cells is mainly governed by the open-circuit voltage and also identify the interface defects as the major loss factor in these devices. |
| |
| Keywords: | Perovskite solar cell Drift-Diffusion equations Defect density Surface recombination velocity Shockley-queisser limit |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
