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Self‐Assembly of Graphenelike ZnO Superstructured Nanosheets and Their Application in Hybrid Photoconductors
Author(s) -
Yan Han,
Yu Zai,
Lu Kun,
Zhang Yajie,
Wei Zhixiang
Publication year - 2011
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201101732
Subject(s) - materials science , nanomaterials , nanoparticle , semiconductor , electrode , charge carrier , nanotechnology , optoelectronics , hybrid material , solution process , layer (electronics) , chemistry
Abstract Photoconductors require high charge‐carrier mobilities, sensitivity over a wide range of light levels, and good stability. Combining an organic semiconductor with environmentally benign inorganic nanoparticles is a rational means to develop photoconductors with such properties. However, an inhomogeneous distribution of nanoparticles in the active layer restricts both charge‐carrier mobility and charge collection at an electrode. In this paper, ultrathin ZnO superstructured nanosheets are successfully synthesized by a solvothermal method. Time‐dependent investigations show that the superstructured nanosheets assemble in solution during the growth process. Given that high‐quality ZnO nanosheets are obtained, a hybrid photoconductor device with P3HT is fabricated and investigated. Sensitivity above 200% under simulated sunlight is obtained with good air stability. This study demonstrates a general approach to design photoconductors using hybrid nanomaterials.