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Thermal Degradation Analysis of Sealed Perovskite Solar Cell with Porous Carbon Electrode at 100 °C for 7000 h
Author(s) -
Baranwal Ajay K.,
Kanda Hiroyuki,
Shibayama Naoyuki,
Masutani Hideaki,
Peiris T. A. Nirmal,
Kanaya Shusaku,
Segawa Hiroshi,
Miyasaka Tsutomu,
Ito Seigo
Publication year - 2019
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201800572
Subject(s) - perovskite (structure) , materials science , degradation (telecommunications) , energy conversion efficiency , solar cell , perovskite solar cell , chemical engineering , fourier transform infrared spectroscopy , porosity , carbon fibers , thermal stability , layer (electronics) , composite material , optoelectronics , telecommunications , computer science , composite number , engineering
Abstract Organic‐inorganic CH 3 NH 3 PbI 3 ‐based perovskite solar cells have received significant research interest; however, thermal stability issue still remains. Carbon‐based triple‐porous‐layer perovskite solar cells without any hole transporting material were selected in order to investigate the internal degradation process by thermal stresses. The sealed perovskite solar cells at 100 °C showed stable performance in the power conversion efficiency up to 4500 h, but the degradation was accelerated after that. By analyzing the perovskite solar cells aged for 7000 h at 100 °C, the results of energy dispersive X‐ray spectroscopy and Fourier transform infrared spectroscopy suggest that, although Pb, I, and N were sealed inside of the devices, a plenty amount of CH 3 NH 3 + deactivated in the sealant UV‐curable adhesive at 100 °C, which is the reason of the thermal degradation for the sealed perovskite solar cells.