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Plasmon-enhanced ZnO nanorod/Au NPs/Cu2O structure solar cells: Effects and limitations

Title
Plasmon-enhanced ZnO nanorod/Au NPs/Cu2O structure solar cells: Effects and limitations
Author
전형탁
Keywords
Au Plasmon Nanoparticle; LSPR; ZnO/Cu2O Solar Cells; Oxide Solar Cells; Electronic Band Analysis
Issue Date
2017-09
Publisher
KOREAN INSTITUTE CHEMICAL ENGINEERS
Citation
KOREAN JOURNAL OF CHEMICAL ENGINEERING, v. 34, no. 12, page. 3200-3207
Abstract
Cu-based compounds can be a good candidate for a low cost solar cell material. In particular, Cu (x) O (x : 1-2) has a good visible light absorbing bandgap at 1-2 eV. As for using nanostructures in solar cell applications, metal nanoparticle-induced localized plasmon resonance is a promising way to increase light absorbance, which can help improve the efficiency of solar cells. We fabricated ZnO nanorod/Au nanoparticles/Cu2O nanostructures to study their solar cell performance. ZnO nanorods and Cu2O layer were synthesized by the electrodeposition method. Size-controlled Au nanoparticles were deposited using E-beam evaporator for localized surface plasmon resonance (LSPR) effect. By inserting Au plasmon nanoparticles and annealing Au NPs in solar cells, we could tune the maximum incident photon-to-current efficiency wavelength. However, the potential well formed by Au NP at the ZnO/Cu2O junction leads to charge-trapping, based on the constructed electronic band analysis. LSPR-induced hot carrier generation is proposed to promote carrier transport further in the presence of Au NPs.
URI
https://link.springer.com/article/10.1007%2Fs11814-017-0222-yhttp://repository.hanyang.ac.kr/handle/20.500.11754/115478
ISSN
0256-1115; 1975-7220
DOI
10.1007/s11814-017-0222-y
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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