Scalable Production of High Performance Flexible Perovskite Solar Cells via Film-Growth-Megasonic-Spray-Coating System
Mincheol Park a b, Yeoun-Woo Jang a b, Minsung Han a b
a Seoul National University, Department of Mechanical and Aerospace Engineering, Seoul, Korea, Republic of
b Seoul National University, Global Frontier Center for Multiscale Energy Systems, Seoul, Korea, Republic of
nanoGe Perovskite Conferences
Proceedings of International Conference on Perovskite Thin Film Photovoltaics and Perovskite Photonics and Optoelectronics (NIPHO20)
Sevilla, Spain, 2020 February 23rd - 25th
Organizer: Hernán Míguez
Poster, Mincheol Park, 099
Publication date: 25th November 2019

Aspiration for commercialization of flexible-substrate based perovskite solar cells (f-PSCs) has strongly required effective scalable-coating-system for flexible perovskite solar cells. Due to low wettability of conventional flexible-electrode-substrates, the systems have not yet shown significant advancement. In this work, we have developed a continuous and automated Film-Growth-Megasonic-Spray-Coating (FGMSC) system that can uniformly grow perovskite film on the flexible substrates through ultrafine perovskite precursor droplets (< 10 μm) and appropriate coating mechanism. With complete automation, we have successfully coated pinhole-free and uniform perovskite films with large grains on the flexible substrate. The FGMSC system has fabricated flexible perovskite solar cells with impressive power conversion efficiencies of 18.24% with high reproducibility. We have also confirmed scalability of our system by coating of perovskite layer on the large-area (100cm2) flexible substrate. The results have proved that the FGMSC system which can conduct continuous and scalable process has high potential to realize commercialization of f-PSCs.

This work has been supported by the Global Frontier R&D Program of the Center for Multiscale Energy Systems funded by the National Research Foundation under the Ministry of Education, Science and Technology, Korea (2012M3A6A7054855).

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