Proceedings of International Conference on Perovskite and Organic Photovoltaics and Optoelectronics (IPEROP19)
DOI: https://doi.org/10.29363/nanoge.iperop.2019.036
Publication date: 23rd October 2018
Realizing industrial-scale, large-area photovoltaic modules without any considerable performance losses compared with the performance of lab-scale, small-area perovskite solar cells (PSCs) has been a challenge for practical applications of PSCs. Highly sophisticated patterning processes for achieving series connections, typically fabricated using printing or laser-scribing techniques, cause unexpected efficiency drops and require complicated manufacturing processes. In this presentation, we report high-efficiency, large-area PSC modules fabricated via a new electrochemical patterning process. The intrinsic ion-conducting features of perovskites enabled us to create metal-filamentary nanoelectrodes to facilitate the monolithic serial interconnections of PSC modules. By fabricating planar-type PSC modules through low-temperature annealing and all-solution processing, we demonstrate a notably high module efficiency of 14.0% (a certified value of 14.1%) for a total area of 9.06 cm2 with a high geometric fill factor of 94.1%.
We also report our recent achievement of burn-in loss-free and high-performance PSCs with a power conversion efficiency (PCE) of 18.8% maintaining over 80% and 90% of their initial PCEs even after 1,000 hours of real-operation (under A.M 1.5G irradiation) and heat-damp (at 85°C in the dark) test under nitrogen gas atmosphere, respectively.
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