Polarization-independent filters for luminescent solar concentrators

被引:20
|
作者
de Boer, Dick K. G. [1 ]
Lin, Chi-Wen [1 ,2 ,3 ]
Giesbers, Merijn P. [1 ]
Cornelissen, Hugo J. [1 ]
Debije, Michael G. [4 ]
Verbunt, Paul P. C. [4 ]
Broer, Dirk J. [4 ]
机构
[1] Philips Res Europe, NL-5656 AE Eindhoven, Netherlands
[2] Natl Chiao Tung Univ, Dept Photon, Hsinchu 30010, Taiwan
[3] Natl Chiao Tung Univ, Display Inst, Hsinchu 30010, Taiwan
[4] Eindhoven Univ Technol, NL-5600 MB Eindhoven, Netherlands
关键词
CONVERSION;
D O I
10.1063/1.3541543
中图分类号
O59 [应用物理学];
学科分类号
摘要
The efficiency of luminescent solar concentrators could be enhanced by use of wavelength-selective filters, reducing the amount of luminescent light lost. To accomplish this, polarization-independent filters with reflectivity >97% were made by combining layers of cholesteric liquid crystals, either a right-with a left-handed layer, or two right-handed layers with a half-lambda waveplate. Normal cholesteric filters have a reflection bandwidth which is narrower than the spectral and angular range of the luminescent emission. The reflection band is broadened from 80 to 200 nm by employing a pitch gradient in the cholesteric layer. The measured transmission bands compare well with calculations. (C) 2011 American Institute of Physics. [doi:10.1063/1.3541543]
引用
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页数:3
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