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나노입자 연구단
나노입자 연구단
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Reactively sputtered nickel nitride as electrocatalytic counter electrode for dye- and quantum dot-sensitized solar cells

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Title
Reactively sputtered nickel nitride as electrocatalytic counter electrode for dye- and quantum dot-sensitized solar cells
Author(s)
Jin Soo Kang; Park M.-A.; Kim J.-Y.; Ha Park S.; Dong Young Chung; Seung-Ho Yu; Jin Kim; Park J.; Jung-Woo Choi; Kyung Jae Lee; Juwon Jeong; Jae Ko M.; Ahn K.-S.; Yung-Eun Sung
Publication Date
2015-05
Journal
SCIENTIFIC REPORTS, v.5, no., pp.10450 -
Publisher
NATURE PUBLISHING GROUP
Abstract
Nickel nitride electrodes were prepared by reactive sputtering of nickel under a N 2 atmosphere at room temperature for application in mesoscopic dye- or quantum dot- sensitized solar cells. This facile and reliable method led to the formation of a Ni 2 N film with a cauliflower-like nanostructure and tetrahedral crystal lattice. The prepared nickel nitride electrodes exhibited an excellent chemical stability toward both iodide and polysulfide redox electrolytes. Compared to conventional Pt electrodes, the nickel nitride electrodes showed an inferior electrocatalytic activity for the iodide redox electrolyte; however, it displayed a considerably superior electrocatalytic activity for the polysulfide redox electrolyte. As a result, compared to dye-sensitized solar cells (DSCs), with a conversion efficiency (η) = 7.62%, and CdSe-based quantum dot-sensitized solar cells (QDSCs, η = 2.01%) employing Pt counter electrodes (CEs), the nickel nitride CEs exhibited a lower conversion efficiency (η = 3.75%) when applied to DSCs, but an enhanced conversion efficiency (η = 2.80%) when applied to CdSe-based QDSCs
URI
http://pr.ibs.re.kr/handle/8788114/2042
DOI
10.1038/srep10450
ISSN
2045-2322
Appears in Collections:
Center for Nanoparticle Research(나노입자 연구단) > Journal Papers (저널논문)
Files in This Item:
32.SCIENTIFIC REPORTS_201505.pdfDownload

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