Chin. Phys. Lett.  2008, Vol. 25 Issue (5): 1878-1880    DOI:
Original Articles |
Effects of Coupling Lens on Optical Refrigeration of Semiconductors
DING Kai;ZENG Yi-Ping
Novel Material Center, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083
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DING Kai, ZENG Yi-Ping 2008 Chin. Phys. Lett. 25 1878-1880
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Abstract Optical refrigeration of semiconductors is encountering efficiency difficulties caused by nonradiative recombination and luminescence trapping. A commonly used approach for enhancing luminescence efficiency of a semiconductor device is coupling a lens with the device. We quantitatively study the effects of a coupling lens on optical refrigeration based on rate equations and photon recycling, and calculated cooling efficiencies of different coupling mechanisms and of different lens materials. A GaAs/GaInP heterostructure coupled with a homo-epitaxial GaInP hemispherical lens is recommended.
Keywords: 78.30.Fs      85.30.De     
Received: 21 December 2007      Published: 29 April 2008
PACS:  78.30.Fs (III-V and II-VI semiconductors)  
  85.30.De (Semiconductor-device characterization, design, and modeling)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2008/V25/I5/01878
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DING Kai
ZENG Yi-Ping
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