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Transferable transparent electrodes of liquid metals for bifacial perovskite solar cells and heaters

Authors
Yun, InsikLee, YeongheePark, Young-GeunSeo, HunkyuChung, Won GiPark, Soo-JinCho, Jin-WooLee, Jun HyeokSrivastava, Ravi PrakashKang, RiraLee, ByunghongKhang, Dahl-YoungKim, Sun-KyungNoh, Jun HongPark, Jang-Ung
Issue Date
3월-2022
Publisher
ELSEVIER
Keywords
Liquid metals; Perovskite solar cells; Printed electronics; Transparent electrodes; Transparent heaters
Citation
NANO ENERGY, v.93
Indexed
SCIE
SCOPUS
Journal Title
NANO ENERGY
Volume
93
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/137493
DOI
10.1016/j.nanoen.2021.106857
ISSN
2211-2855
Abstract
Despite the significant advantages of liquid metals, such as outstanding mechanical deformability and good electrical conductivity, their intrinsic opacity and unsuitability for conventional photolithography processing have limited their extensive utilization for transparent conductive films. Herein, we present the formation of transparent and stretchable electrodes of liquid metals using a direct printing method with high resolutions. Conductive grid structures of liquid metals can be printed directly at room temperature with linewidth below 5 mu m with no additional processing, and they exhibit superb optoelectronic properties (low sheet resistance of 1.7 Omega sq(-1) at high transmittance of 90.1%). Also, after their encapsulation with an elastomeric layer, these fine grid patterns are transferrable from printed regions onto various nonplanar surfaces. In addition, the bifacial perovskite solar cells fabricated using these transparent electrodes have high power conversion efficiency, i.e., 14.12%, with an outstanding bifaciality factor of 81.09%. In addition, these fine grids of liquid metals can be operated as transparent heaters that operate reliably and have rapid heating rates even in the extremely cold environment of - 30 degrees C, which is significantly lower than their melting temperature (15.5 degrees C). Thus, their use may be a promising strategy for next-generation free-form electronics and automobile applications.
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College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles

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