Chin. Phys. Lett.  2013, Vol. 30 Issue (1): 016801    DOI: 10.1088/0256-307X/30/1/016801
CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
Electric-Field Switching of Bright and Dark Excitons in Semiconductor Crossed Nanowires
LI Xiao-Jing**, K. S. Chan2
1College of Physics and Energy, Fujian Normal University, Fuzhou 350007
2Department of Physics and Materials Science, City University of Hong Kong, Hong Kong
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LI Xiao-Jing, K. S. Chan 2013 Chin. Phys. Lett. 30 016801
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Abstract We investigate theoretically the exciton states in semiconductor crossed nanowires (CNWs) and it is found that the energy spectrum and electro-PL spectrum of the exciton in the CNWs can be tuned by the size of the nanowires using electric fields. An interesting bright-to-dark exciton transition can be found and it significantly affects the photoluminescence spectrum by the electric fields, which can be used to design new types of optoelectronic devices.
Received: 01 August 2012      Published: 04 March 2013
PACS:  68.65.Hb (Quantum dots (patterned in quantum wells))  
  71.35.Ji (Excitons in magnetic fields; magnetoexcitons)  
  78.20.Ls (Magneto-optical effects)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/30/1/016801       OR      https://cpl.iphy.ac.cn/Y2013/V30/I1/016801
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LI Xiao-Jing
K. S. Chan
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