Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO25)
Publication date: 24th April 2025
Expeditious record-breaking power conversion efficiency of perovskite solar cells (PSCs) reaching 27% owes to the scientific mainstream devoted in understanding its intricate scaffold of designing the architecture.[1] The ease of processing and modifying the staked layers paves a pathway in realizing the targets of low-cost production, high efficiency, and better stability. Most fabrication processes include the use of inert environments and high temperature.[2,3] Such conditions are majorly suitable for hard substrates curbing the possibility to transfer the technology on a flexible base which uses polymeric substrates or thin metal foils. Flexible PSCs has its potential in the integration on curved surfaces and light weight enabling applications in wearable electronics, portable power sources, and building-integrated photovoltaics (BIPV).[4] In addition, change of hazardous and toxic solvents used in the fabrication processes is the need of the hour and address alternative solvents while reporting the device performance. This will positively impact in large scale industrial production and commercialization in agreement with government norms.[5,6] Augmenting the panoramic research of PSCs, this work emphasizes 4 key areas in fabricating a flexible PSC. Starting from fabricating out of the inert environment, reducing high temperature processing requirement, scaling up from small area device to larger areas, and filling in a more sustainable and eco-friendly use of green solvents, this work demonstrates power conversion efficiencies of more than 21% on glass and 18.5% on flexible PET substrates. The results are creating a pathway in adding more understanding to the technology transfer from rigid to flexible substrates clearly marking the state-of-the-art in PSCs research.
Ref
1. [1] Best Research-Cell Efficiency Chart | Photovoltaic Research | NREL. Accessed March 13, 2025. https://www.nrel.gov/pv/cell-efficiency.html
2. [6] ECHA. Accessed March 13, 2025. https://echa.europa.eu/
The authors heartily acknowledge financial support from the European Union’s Horizon Europe research and innovation program under grant agreement no. 101122283 Project "PEARL"
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