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Towards Perfectly Ordered Novel ZnO/Si Nano‐Heterojunction Arrays
Author(s) -
Yadian Boluo,
Liu Hai,
Wei Yuefan,
Wu Junsheng,
Zhang Sen,
Sun Linfeng,
Zhao Chunwang,
Liu Qing,
Ramanujan Raju V.,
Zhou Kun,
Gan Chee Lip,
Huang Yizhong
Publication year - 2014
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.201301674
Subject(s) - materials science , nanorod , fabrication , heterojunction , nucleation , optoelectronics , nanotechnology , photoluminescence , hydrothermal circulation , recrystallization (geology) , nano , chemical engineering , composite material , medicine , paleontology , chemistry , alternative medicine , organic chemistry , pathology , engineering , biology
The fabrication of a highly ordered novel ZnO/Si nano‐heterojuntion array is introduced. ZnO seed layer is first deposited on the Si (P<111>) surface. The nucleation sites are then defined by patterning the surface through focused ion beam (FIB) system. The ZnO nanorods are grown on the nucleation sites through hydrothermal process. The whole fabrication process is simple, facile and offers direct control of the space, length and aspect ratio of the array. It is found that ZnO/Si nanojunctions show an improved interface when subjected to heat treatment. The recrystallization of ZnO and the tensile lattice strain of Si developed during the heating process contribute the enhancement of their photoresponses to white light. The photoluminescence (PL) measurement result of nano‐heterojunction arrays with different parameters is discussed.