Proceedings of MATSUS Fall 2023 Conference (MATSUSFall23)
Publication date: 18th July 2023
The efficiency of perovskite solar cells (PSCs) is difficult to increase further due to the limitations of charge selections. In this study, we propose a novel hole-selective material for high-efficiency p-i-n PSC by applying a multifunctional organic molecule. The molecule is based on heteroaromatic compounds with phosphonic acid anchoring groups and can form self-assembling faults (SAMs) from various oxides. In addition to, the simple synthesis process enables low cost and a simple process to adapt the shape of the oxide surface. SAMs are designed to produce an energetically aligned interface with the perovskite light-absorbing layer without the need for a reduction in efficiency due to specific radiation. A series of SAMs of heteroaromatic compounds with various functional groups are designed and prepared. To investigate the effects of different terminal groups on the photophysical, electrochemical, hole extraction, and bulk properties such as photovoltaic performance of perovskite solar cells. In this study, not only the device factor of the p-i-n structure but also the factor and performance of the monolithic tandem solar cell were confirmed.
This work was supported by the DGIST R&D Program of the Ministry of Science and ICT(23-CoE-ET-01).
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