Cost-Effective Fluorene and Thiophene Containing Hole Conductors Towards Semi-transparent Sb2S3 Absorber-Based Solar Cells
| Autor: | Mandati, S., Juneja, N., Katerski, A., Jegorove, A., Daskeviciute-Geguziene, S., Grzibovskis, R., Vembris, A., Spalatu, N., Magomedov, A., Karazhanov, S., Getautis, V., Krunks, M., Oja Acik, I. |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.4229/wcpec-82022-2bv.2.70 |
| Popis: | 8th World Conference on Photovoltaic Energy Conversion; 470-473 Building integrated photovoltaics (PV) is among the major PV technologies being pursued to align with the energy efficiency buildings and net-zero emission policies. Semi-transparent solar cells could be key components to achieve these targets and efforts are underway to develop novel PV absorbers and devices with the priority of materials’ abundance, cost and stability. Sb2S3 thin films are promising PV absorbers owing to their superior optoelectronic properties, stability and availability of raw materials. However, the conventional expensive hole conductors like P3HT and Spiro-OMeTAD coupled with their post-processing needs and stability issues could be obstacles for Sb2S3 solar cells. In this study, cost-effective and transparent fluorene and thiophene-based hole transport materials (HTM) are explored in Sb2S3 solar cells. HTMs are spin coated to fabricate solar cells in the superstrate configuration (Glass/FTO/TiO2/Sb2S3/HTM/Au) wherein TiO2 and Sb2S3 are ultrasonic spray deposited. Solar cells with new HTMs have yielded similar power conversion efficiencies (3.8-3.9 %) compared to P3HT-based cells (3.7%) while exhibiting 20-25 % enhanced average visible transmittance (400-800 nm) in the device stack without the metal contact. Optical properties and band energetics of individual layers demonstrate that the new cost-effective HTMs exhibit favourable band off-set for application in semi-transparent Sb2S3 solar cells. |
| Databáze: | OpenAIRE |
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