Document Detail


Thermally Phase-Transformed In2 Se3 Nanowires for Highly Sensitive Photodetectors.
MedLine Citation:
PMID:  24828147     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The photoresponse characteristics of In2 Se3 nanowire photodetectors with the κ-phase and α-phase structures are investigated. The as-grown κ-phase In2 Se3 nanowires by the vapor-liquid-solid technique are phase-transformed to the α-phase nanowires by thermal annealing. The photoresponse performances of the κ-phase and α-phase In2 Se3 nanowire photodetectors are characterized over a wide range of wavelengths (300-900 nm). The phase of the nanowires is analyzed using a high-resolution transmission microscopy equipped with energy dispersive X-ray spectroscopy and X-ray diffraction. The electrical conductivity and photoresponse characteristics are significantly enhanced in the α-phase due to smaller bandgap structure compared to the κ-phase nanowires. The spectral responsivities of the α-phase devices are 200 times larger than those of the κ-phase devices. The superior performance of the thermally phase-transformed In2 Se3 nanowire devices offers an avenue to develop highly sensitive photodetector applications.
Authors:
Daegun Kang; Taiuk Rim; Chang-Ki Baek; M Meyyappan; Jeong-Soo Lee
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2014-5-15
Journal Detail:
Title:  Small (Weinheim an der Bergstrasse, Germany)     Volume:  -     ISSN:  1613-6829     ISO Abbreviation:  Small     Publication Date:  2014 May 
Date Detail:
Created Date:  2014-5-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101235338     Medline TA:  Small     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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