Optoelectronic characteristics of single CdS nanobelts

Journal Article · Mon May 09 00:00:00 EDT 2005 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1923186· OSTI ID:20702343

Li, Q H; Gao, T; Wang, T H ^[1]

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1. Micro-Nano Technologies Research Center, Hunan University, Changsha 410082 (China)

Optoelectronic properties of single CdS nanobelts are investigated by performing transport measurements with different laser ON/OFF circles. The current increases linearly with the bias voltage in the dark, and superlinearly under illumination. The superlinear increase can be related to the enhanced mobility due to the partial release of surface adsorbates under illumination. The current jumps up by five orders of magnitude upon turning on the laser with an intensity of 0.3 W/cm{sup 2} within 91 ms and decreases by five orders 6 ms just after turning off the laser. The high sensitivity and fast response in the visible range indicate potential applications of CdS nanobelts in realizing optoelectronic switches.

• OSTI ID: 20702343
• Journal Information: Applied Physics Letters, Vol. 86, Issue 19; Other Information: DOI: 10.1063/1.1923186; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADSORPTION
CADMIUM SULFIDES
ELECTRIC POTENTIAL
ELECTRON MOBILITY
LASERS
LAYERS
NANOSTRUCTURES
PHOTOCONDUCTIVITY
SEMICONDUCTOR MATERIALS
SURFACES
VISIBLE SPECTRA