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Hexagonal array micro-convex patterned substrate for improving diffused transmittance in perovskite solar cells

Authors
Oh, Kyoung SukByun, MinseopKim, MinjinKim, Yang DooKim, KwanHuh, DaihongKim, Dong SukLee, Heon
Issue Date
30-8월-2018
Publisher
ELSEVIER SCIENCE SA
Keywords
Perovskite solar cells; Nanoimprint lithography; Indium tin oxide; Zinc oxide; Diffused transmittance; Hexagonal array pattern; Micro-convex nanostructure
Citation
THIN SOLID FILMS, v.660, pp.682 - 687
Indexed
SCIE
SCOPUS
Journal Title
THIN SOLID FILMS
Volume
660
Start Page
682
End Page
687
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/73717
DOI
10.1016/j.tsf.2018.04.017
ISSN
0040-6090
Abstract
In the past decade, the fastest development in solar cell research has occurred for perovskite solar cells. Owing to the favorable properties of perovskite materials, perovskite solar cells exhibit excellent power conversion efficiencies and there appears great potential for future development. In this paper, we report the fabrication of a substrate with excellent optical properties by incorporating hexagonal array micro-convex (HAMC) nanostructures in it before integration with the electrode (indium tin oxide and zinc oxide) and the halide for use in organic-inorganic perovskite solar cells. This was fabricated using nanoimprint lithography which showed excellent throughput and involved simple processing methods. The HAMC nanostructured substrate showed strong light scattering as compared to that of the conventional substrate. This resulted in the increase of current density of the fabricated solar cell from 19.45 mA/cm(2) (un-patterned substrate) to 20.92 mA/cm(2) (nanostructured substrate) with accompanying increase in the external quantum efficiency and a satisfactory performance by the perovskite solar cell.
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공과대학 (신소재공학부)
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