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

Yoon Hee Jang, Adila Rani, Li Na Quan, Valerio Adinolfi, Pongsakorn Kanjanaboos, Olivier Ouellette, Taehwang Son, Yu Jin Jang, Kyungwha Chung, Hannah Kwon, Donghyun Kim, Dong Ha Kim, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

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.

Original languageEnglish
Pages (from-to)117-123
Number of pages7
JournalACS Energy Letters
Volume2
Issue number1
DOIs
StatePublished - 13 Jan 2017

Bibliographical note

Publisher Copyright:
© 2016 American Chemical Society.

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