Single‐Crystalline CdS Nanobelts for Excellent Field‐Emitters and Ultrahigh Quantum‐Efficiency Photodetectors

Single‐crystalline CdS nanobelts demonstrate excellent field‐emission properties for the first time. Individual CdS nanobelts are assembled for high‐performance visible‐light photodetectors with an ultrafast response time of ∼20 μs and ultrahigh quantum efficiency of 1.9 × 107%. The results suggest...

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Bibliographic Details
Published in:Advanced materials (Weinheim) 2010-08, Vol.22 (29), p.3161-3165
Main Authors: Li, Liang, Wu, Peicai, Fang, Xiaosheng, Zhai, Tianyou, Dai, Lun, Liao, Meiyong, Koide, Yasuo, Wang, Hongqiang, Bando, Yoshio, Golberg, Dmitri
Format: Article
Language:English
Subjects:
Cadmium Compounds - chemistry
CdS nanobelts
Crystallization
field‐emission
Nanoparticles - chemistry
Nanoparticles - ultrastructure
Nanostructure
Nanotechnology devices
optical switches
Optoelectronics
photoconductivity
Photodetectors
Quantum efficiency
Quantum Theory
Response time
Single crystals
Sulfides - chemistry
visible light
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Summary:Single‐crystalline CdS nanobelts demonstrate excellent field‐emission properties for the first time. Individual CdS nanobelts are assembled for high‐performance visible‐light photodetectors with an ultrafast response time of ∼20 μs and ultrahigh quantum efficiency of 1.9 × 107%. The results suggest a high potential of utilizing these CdS nanobelts as optoelectronic nanodevices.
ISSN:0935-9648
1521-4095
DOI:10.1002/adma.201000144