Singlet Fission Sensitized Solar Cells
Shubhangi Bhardwaj a, Sushobhan Avasthi a, Satish Patil b
a Center for Nanoscience and Engineering (CENSE), Indian Institute of Science, Bengaluru, India
b Solid State and Structural Chemistry Unit, Indian Institute of Science, Bengaluru-560012, India
Proceedings of SUNRISE September Symposium 2021 ‘Powering Green Recovery’ (SUNRISEIII)
Online, Spain, 2021 September 20th - 22nd
Organizers: Hari Upadhyaya, Adrian Walters, James Durrant, Sara Walters and Georgia Bevan
Invited Speaker, Shubhangi Bhardwaj, presentation 042
Publication date: 14th September 2021

Generation of energy using silicon solar cell is a well-established technology. However, silicon (like other semiconductors) fails to utilize the energy excess to its bandgap in the form of thermalization loss. To reduce these losses one of the solutions is to enhance sensitivity to light by sensitizing the silicon solar cell using singlet exciton fission. This singlet exciton fission in organic chromophore generates triplet excitons which needs to be transferred to silicon via an interlayer, which further should result in the creation of additional electron hole pairs and thus, boost the efficiency. However, the interlayer via which these triplets/triplet energy transfers play a crucial role. Thus, in our work we aim to study interlayers with different dielectric constant and its impact on the triplet transfer and device performance.

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