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김영삼

Kim, Yung Sam
Ultrafast 2D IR Spectroscopy Lab.
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Highly Efficient and Stable Inverted Perovskite Solar Cell Obtained via Treatment by Semiconducting Chemical Additive

Author(s)
Yu, Jae ChoulBadgujar, SachinJung, Eui DaeSingh, Varun KumarKim, Dae WooGierschner. JohannesLee, EunsongKim, Yung SamCho, ShinukKwon, Min SangSong, Myoung Hoon
Issued Date
2019-02
DOI
10.1002/adma.201805554
URI
https://scholarworks.unist.ac.kr/handle/201301/25519
Fulltext
https://onlinelibrary.wiley.com/doi/full/10.1002/adma.201805554
Citation
ADVANCED MATERIALS, v.31, no.6, pp.1805554
Abstract
The addition of chemical additives is considered as a promising approach for obtaining high-quality perovskite films under mild conditions, which is essential for both the efficiency and the stability of organic-inorganic hybrid perovskite solar cells (PeSCs). Although such additive engineering yields high-quality films, the inherent insulating property of the chemical additives prevents the efficient transport and extraction of charge carriers, thereby limiting the applicability of this approach. Here, it is shown that organic conjugated molecules having rhodanine moieties (i.e., SA-1 and SA-2) can be used as semiconducting chemical additives that simultaneously yield large-sized perovskite grains and improve the charge extraction. Using this strategy, a high power conversion efficiency of 20.3% as well as significantly improved long-term stability under humid air conditions is achieved. It is believed that this approach can provide a new pathway to designing chemical additives for further improving the efficiency and stability of PeSCs.
Publisher
WILEY-V C H VERLAG GMBH
ISSN
0935-9648
Keyword (Author)
charge extractionlong-term stabilitypassivationperovskite solar cellssemiconducting materials
Keyword
HALIDE PEROVSKITESPERFORMANCEDEPOSITIONINTERFACEBEHAVIORLENGTHSFILMS

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