Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV23)
Publication date: 30th March 2023
Though perovskites are some of the most promising third generation solar cell materials, a problem in achieving high performance, is UV photon harvesting. This study investigates an n-i-p methylammonium lead iodide (MAPI) perovskite solar cell structure, incorporating a new electron transporting layer (ETL) that absorbs strongly in the UV. Specifically, a new ETL system was developed and investigated for how it interacts and performs in conjunction with the MAPI solar cell; the objective being to utilise its higher UV harvesting capabilities. Power conversion efficiency (PCE) measurements were taken of complete solar cell devices, fabricated in ambient conditions, showing the highest PCE of 16.6% for the control SnO2/MAPI device and 15.2% for the UV harvesting-ETL/MAPI. Time-correlated single photon counting (TCSPC) measurements were conducted to assess the interactions between the UV harvesting ETL and MAPI, identifying somehwat low photoluminescence quenching of MAPI of 76.3%, indicative of the potential for further optimisation steps.
Stoichko Dimitrov, Xuan Li, Maria Garavagno
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International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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