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Construction of FeS 2 ‐Sensitized ZnO@ZnS Nanorod Arrays with Enhanced Optical and Photoresponse Performances
Author(s) -
Wang Mudan,
Chen Chenxu,
Qin Haiying,
Zhang Lei,
Fang Youtong,
Liu Jiabin,
Meng Liang
Publication year - 2015
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201500163
Subject(s) - nanorod , materials science , photocurrent , photoluminescence , optoelectronics , band gap , absorption (acoustics) , visible spectrum , nanotechnology , composite material
FeS 2 ‐sensitized ZnO@ZnS nanorod arrays are fabricated by a two‐step solution immersion and a subsequent sulfurization. The material properties including structure, morphology, and photoluminescence are investigated by a variety of characterization methods. As compared with ZnO@ZnS core/shell structure, FeS 2 ‐sensitized ZnO@ZnS nanorod arrays show improved optical absorption property with the extension of the absorption edge into the range of visible light. The photoresponse performance of FeS 2 ‐sensitized Zno@ZnS is also enhanced as the photocurrent density at 1.0 V is dozens of times larger than that of ZnO@ZnS nanorods. The cause for the difference in such material properties of these two materials is discussed. In this work, a new method for sensitizing wide bandgap ZnO@ZnS nanorod arrays with improved light response performance is presented.