Debije Michael G, Van My-Phung, Verbunt Paul P C, Kastelijn Maud J, van der Blom Rudy H L, Broer Dirk J, Bastiaansen Cees W M
Department of Polymer Technology, Chemical Engineering, and Chemistry, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.
Appl Opt. 2010 Feb 1;49(4):745-51. doi: 10.1364/AO.49.000745.
To reduce surface loss in luminescent solar concentrators (LSCs), we systematically apply organic wavelength-selective mirrors, chiral nematic (cholesteric) liquid crystals, onto the LSCs with an air gap and determine their effect on waveguide output. The highest output is achieved using a scattering background and cholesteric mirror with a reflection band significantly redshifted (approximately 150 nm) from the emission peak of the fluorescent dye. The use of an air gap results in light bending away from the waveguide surface normal and, consequently, a redshift of the cholesteric mirrors is required. Up to 35% more dye-emitted light energy exits the waveguide edge after application of the cholesteric, and an increase in absolute edge power of 12% was found for a waveguide using a separate scatterer.
为了减少发光太阳能聚光器（LSC）中的表面损失，我们系统地将有机波长选择镜——手性向列（胆甾型）液晶，应用于具有气隙的LSC上，并确定它们对波导输出的影响。使用散射背景和反射带从荧光染料发射峰显著红移（约150 nm）的胆甾型镜可实现最高输出。气隙的使用导致光线远离波导表面法线弯曲，因此，需要胆甾型镜发生红移。应用胆甾型镜后，多达35%的染料发射光能从波导边缘出射，并且对于使用单独散射体的波导，发现绝对边缘功率增加了12%。
