Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO24)
Publication date: 25th April 2024
The development of emerging photovoltaic technology has promoted the innovation of buildingintegrated photovoltaics (BIPV), not only in lower cost and simpler processing technology but also in a variety of additional features, such as flexibility and transparency. Semi-transparent solar cells that allow partial transmission of visible light are excellent candidates for BIPVs owing to their unique properties and potential for integrated energy solutions.[1], [2] In this work, we present a straightforward and highly reproducible protocol for depositing extremely uniform and ultra-thin perovskite layers. Our solution-processed perovskite solar cells, fabricated on flexible polymer substrates with large active area (1 cm2), achieved a noteworthy 5.7% power conversion efficiency (PCE) under standard conditions (AM 1.5G radiation, 100 mW cm-2) accompanied by an Average Visible Transmittance (AVT) of 21.5% for full device architecture with 10 nm thick silver electrode. We present a simple yet elegant fabrication procedure for semi-transparent perovskite solar cells without any additional antireflective layers. Furthermore, we fabricated working perovskite solar cells with the thinnest active layer of spin-coated MAPbI3 reported so far (10 nm) exhibiting 1.9% PCE and 41.1% AVT (62.9% AVT without electrode). These results hold great promise for the integration of perovskite-based semi-transparent solar cells into real-world applications, advancing the landscape of renewable energy.
This work was supported by Polish National Science Centre (NCN) Opus Grant UMO-2019/33/B/ST3/03021 and OPUS Grant 2NO/0013/21 . The authors would like to acknowledge the contributions and scientific assistance of the late Prof. Wladek Walukiewicz
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