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Kim, Jin Young
Next Generation Energy Laboratory
Research Interests
  • Polymer solar cells, QD solar cells, organic-inorganic hybrid solar cells, perovskite solar cells, OLEDs, PeLEDs, organic FETs

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High colloidal stability ZnO nanoparticles independent on solvent polarity and their application in polymer solar cells

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Title
High colloidal stability ZnO nanoparticles independent on solvent polarity and their application in polymer solar cells
Author
Lee, WoojinYeop, JiwooHeo, JungwooYoon, Yung JinPark, Song YiJeong, JaekiShin, Yun SeopKim, Jae WonAn, Na GyeongKim, Dong SukPark, JongnamKim, Jin Young
Issue Date
2020-10
Publisher
Nature Publishing Group
Citation
SCIENTIFIC REPORTS, v.10, no.1, pp.18055
Abstract
Significant aggregation between ZnO nanoparticles (ZnO NPs) dispersed in polar and nonpolar solvents hinders the formation of high quality thin film for the device application and impedes their excellent electron transporting ability. Herein a bifunctional coordination complex, titanium diisopropoxide bis(acetylacetonate) (Ti(acac)2) is employed as efficient stabilizer to improve colloidal stability of ZnO NPs. Acetylacetonate functionalized ZnO exhibited long-term stability and maintained its superior optical and electrical properties for months aging under ambient atmospheric condition. The functionalized ZnO NPs were then incorporated into polymer solar cells with conventional structure as n-type buffer layer. The devices exhibited nearly identical power conversion efficiency regardless of the use of fresh and old (2 months aged) NPs. Our approach provides a simple and efficient route to boost colloidal stability of ZnO NPs in both polar and nonpolar solvents, which could enable structure-independent intense studies for efficient organic and hybrid optoelectronic devices.
URI
https://scholarworks.unist.ac.kr/handle/201301/48673
URL
https://www.nature.com/articles/s41598-020-75070-0
DOI
10.1038/s41598-020-75070-0
ISSN
2045-2322
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