Efficient and Stable Quasi-2D Ruddlesden-Popper Perovskite Solar Cells by Tailoring Crystal Orientation and Passivating Surface Defects.

Autor: Kim JH; School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.; Heeger Center for Advanced Materials (HCAM) and Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea., Oh CM; Advanced Photonics Research Institute, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea., Hwang IW; Advanced Photonics Research Institute, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea., Kim J; Pohang Accelerator Laboratory, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea., Lee C; Max Planck POSTECH Center for Complex Phase of Materials, Pohang University of Science and Technology, Pohang, 37673, Republic of Korea., Kwon S; Department of Energy and Materials Engineering, Dongguk University, Seoul, 04620, Republic of Korea., Ki T; School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.; Heeger Center for Advanced Materials (HCAM) and Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea., Lee S; School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.; Heeger Center for Advanced Materials (HCAM) and Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea., Kang H; Heeger Center for Advanced Materials (HCAM) and Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea., Kim H; Heeger Center for Advanced Materials (HCAM) and Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.; Graduate School of Energy Convergence, Institute of Integrated Technology, Gwangju Insititute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea., Lee K; School of Materials Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.; Heeger Center for Advanced Materials (HCAM) and Research Institute for Solar and Sustainable Energies (RISE), Gwangju Institute of Science and Technology (GIST), Gwangju, 61005, Republic of Korea.
Jazyk: angličtina
Zdroj: Advanced materials (Deerfield Beach, Fla.) [Adv Mater] 2023 Aug; Vol. 35 (31), pp. e2302143. Date of Electronic Publication: 2023 Jun 15.
DOI: 10.1002/adma.202302143
Abstrakt: Solar cells (PSCs) with quasi-2D Ruddlesden-Popper perovskites (RPP) exhibit greater environmental stability than 3D perovskites; however, the low power conversion efficiency (PCE) caused by anisotropic crystal orientations and defect sites in the bulk RPP materials limit future commercialization. Herein, a simple post-treatment is reported for the top surfaces of RPP thin films (RPP composition of PEA 2 MA 4 Pb 5 I 16 = 5) in which zwitterionic n-tert-butyl-α-phenylnitrone (PBN) is used as the passivation material. The PBN molecules passivate the surface and grain boundary defects in the RPP and simultaneously induce vertical direction crystal orientations of the RPPs, which lead to efficient charge transport in the RPP photoactive materials. With this surface engineering methodology, the optimized devices exhibit a remarkably enhanced PCE of 20.05% as compared with the devices without PBN (≈17.53%) and excellent long-term operational stability with 88% retention of the initial PCE under continuous 1-sun irradiation for over 1000 h. The proposed passivation strategy provides new insights into the development of efficient and stable RPP-based PSCs.
(© 2023 Wiley-VCH GmbH.)
Databáze: MEDLINE
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