Journal
SOLAR ENERGY
Volume 215, Issue -, Pages 328-334Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2020.12.059
Keywords
Gradient doping; Perovskite solar cell; Numerical modelling
Categories
Funding
- Program for Innovative Research Team in Science and Technology in Fujian Province University (IRTSTFJ)
- Natural Science Foundation of Fujian Province [2020J01930, 2020J01929, 2019J01877, 2019J01757]
- Educational Department of Fujian Province of China [JAT190470]
- Cultivation Fund of Young Scientific Research Talents of Fujian Jiangxia University [JXZ2020007, JXZ2019006]
- Support Program for Innovative Science Research Group of Fujian Jiangxia University
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Carbon-based perovskite solar cells have attracted attention for their low cost and simple structure but still lag behind conventional PSCs. Gradient doping of the absorber enhances efficiency and simplifies fabrication process, offering theoretical guidance for high-performance C-PSC design.
The carbon-based perovskite solar cells (C-PSCs) have attracted tremendous attentions due to the low fabrication cost and simple structure by omitting the hole transporting layer (HTL). However, the performance of C-PCSs is still lag behind those of conventional PSCs with HTL. In this work, an innovative C-PSC with a gradient doping absorber is proposed and explored by SCAPS simulation. The effect of different doping gradient, average doping content of gradient doping absorber and interface defect density are analyzed. Through the optimization of the above-mentioned parameters, an efficiency higher than 25% could be realized by using gradient doping of perovskite absorber in C-PSC, which is much higher than the uniformly doped C-PSC, due to the additional electric field introduced by the gradient doping. In addition, dividing the CH3NH3PbI3 absorber simply into two layers with a doping gradient of 300 can also enhance the device performance of C-PSC significantly, which greatly simplifies the fabricating process. This research offers theoretical guidance for the design of highperformance C-PSCs for research and industry.
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