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Graphene Oxide Shells on Plasmonic Nanostructures Lead to High-Performance Photovoltaics: A Model Study Based on Dye-Sensitized Solar Cells

Title
Graphene Oxide Shells on Plasmonic Nanostructures Lead to High-Performance Photovoltaics: A Model Study Based on Dye-Sensitized Solar Cells
Authors
Jang, Yoon HeeRani, AdilaQuan, Li NaAdinolfi, ValerioKanjanaboos, PongsakornOuellette, OlivierSon, TaehwangJang, Yu JinChung, KyungwhaKwon, HannahKim, DonghyunKim, Dong HaSargent, Edward H.
Ewha Authors
김동하Adila Rani
SCOPUS Author ID
김동하scopus; Adila Raniscopus
Issue Date
2017
Journal Title
ACS ENERGY LETTERS
ISSN
2380-8195
Citation
vol. 2, no. 1, pp. 117 - 123
Publisher
AMER CHEMICAL SOC
Abstract
The incorporation of plasmonic nanoparticles (NPs) into photovoltaic devices can increase light absorption and in turn improve solar cell performance. The graphene oxide-encapsulated gold NPs (Au@GO NPs) are designed and incorporated into photoanodes to demonstrate plasmonic dye-sensitized solar cells. The coupling between GO and the Au NPs has the beneficial effect of extending solar spectral utilization in the long-wavelength portion of the visible spectrum. In addition, GO encapsulation reduces charge recombination on the surface of the NPs and facilitates improved charge transport. As a result, champion devices with plasmonic photoanodes containing Au@GO NPs deliver a power conversion efficiency that reaches 9.1%. This corresponds to an enhancement in photocurrent and power conversion efficiency of 19 and 17%, respectively, compared to control devices.
DOI
10.1021/acsenergylett.6b00612
Appears in Collections:
자연과학대학 > 화학·나노과학전공 > Journal papers
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