Photovoltaic properties of graphene oxide sheets beaded with ZnO nanoparticles

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.02.025· OSTI ID:21504061

Wang, Huan; Wang, Li; Qu, Chaoqun; Su, Yadong; Yu, Shansheng ^[1]; Zheng, Weitao ^[1]; Liu, Yichun ^[2]

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1. Department of Materials Science, Key Laboratory of Mobile Materials, MOE, and State Key Laboratory of Superhard Materials, Jilin University, Changchun 130012 (China)
2. Center for Advanced Optoelectronic Functional Materials Research, and Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, 5268 Renmin Street, Changchun 130024 (China)

A hybrid material of graphene oxide (GO) sheets beaded with ZnO nanoparticles was prepared. The material extends over a few hundred square nanometers, in which the ZnO nanoparticles (average diameter ({approx}5 nm)) are dispersed evenly on the GO sheet. Both the surface photovoltage or surface photocurrent intensity for the material are much stronger than for pure ZnO nanoparticles, meaning that the free charge carriers can effectively be transferred from ZnO nanoparticles to GO sheets, which can serve as a probe to monitor the electron transfer from excited ZnO to GO. Anchoring ZnO nanoparticles on two dimensional carbon nanostructures such as GO can pave a way towards the design of ordered nanostructure assemblies that can harvest light energy efficiently. -- Graphical Abstract: Upon irradiating the GO-ZnO sample with a light having an energy equalizing the band gap energy, the photogenerated charge-hole pairs are produced, and have been separated effectively. Display Omitted Research highlights: > A hybrid material of graphene oxide (GO) sheets beaded with ZnO nanoparticles was prepared. > The ordered nanostructure assemblies can harvest light energy efficiently and the free charge carriers can effectively be transferred from ZnO nanoparticles to GO sheet. > A hybrid material can serve as a probe to monitor the electron transfer from excited ZnO to GO.

• OSTI ID: 21504061
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 4; Other Information: DOI: 10.1016/j.jssc.2011.02.025; PII: S0022-4596(11)00079-X; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CARBON
CHARGE CARRIERS
ELECTRON TRANSFER
GRAPHITE
NANOSTRUCTURES
OXIDES
PHOTOVOLTAIC EFFECT
SHEETS
SURFACES
ZINC OXIDES
CHALCOGENIDES
ELEMENTS
MINERALS
NONMETALS
OXYGEN COMPOUNDS
PHOTOELECTRIC EFFECT
ZINC COMPOUNDS