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Chin. Phys. B, 2014, Vol. 23(4): 044211    DOI: 10.1088/1674-1056/23/4/044211

Design optimization of highly efficient spectrum-splitting and beam-concentrating diffractive optical element for lateral multijunction solar cells

Wang Jin-Zea b, Ye Jia-Shengc, Huang Qing-Lia b, Xu Xina b, Li Dong-Meia b, Meng Qing-Boa b, Yang Guo-Zhend
a Key Laboratory for Renewable Energy (CAS), Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
b Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
c Department of Physics, Capital Normal University; Beijing Key Laboratory for THz Spectroscopy and Imaging,Key Laboratory of THz Optoelectronics, Ministry of Education, Beijing 100048, China;
d Laboratory of Optical Physics, Chinese Academy of Sciences, Beijing 100190, China
Abstract  Two improved algorithms are proposed to extend a diffractive optical element (DOE) to work under the broad spectrum of sunlight. An optimum design has been found for the DOE, with a weighted average optical efficiency of about 6.8% better than that of the previous design. The optimization of designing high optical efficiency DOEs will pave the way for future designs of high-efficiency, low-cost lateral multijunction solar cells based on such a DOE.
Keywords:  thickness optimization      solar cell      split      concentration      diffractive optical element  
Received:  12 November 2013      Revised:  17 December 2013      Accepted manuscript online: 
PACS:  42.15.Eq (Optical system design)  
  42.25.Fx (Diffraction and scattering)  
  42.79.Ek (Solar collectors and concentrators)  
Fund: Project supported by the National Natural Science Foundation of China (Grants Nos. 91233202, 21173260, and 51072221) and the National Basic Research Program of China (Grant No. 2012CB932903.
Corresponding Authors:  Meng Qing-Bo, Yang Guo-Zhen     E-mail:;
About author:  42.15.Eq; 42.25.Fx; 42.79.Ek

Cite this article: 

Wang Jin-Ze, Ye Jia-Sheng, Huang Qing-Li, Xu Xin, Li Dong-Mei, Meng Qing-Bo, Yang Guo-Zhen Design optimization of highly efficient spectrum-splitting and beam-concentrating diffractive optical element for lateral multijunction solar cells 2014 Chin. Phys. B 23 044211

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