Two glass types for luminescent solar concentrators are presented: Type 1 is a silicate glass activated with Yb203, Nd203 and Cr20. This type shows luminescence in the region 970 -1080 nm. It is possible to use it in combination with a silicon detector. The glass type 2 is a borosilicate glass activated with UO2. Its wavelength region of luminescence is 510 -560 nm. It can be used in combination with a CdS /Cu2S or GaAs photo detector respectively. 6 Ho +U Glass 658 6 88 Abstract Two glass types for luminescent solar concentrators are presented: Type 1 is a silicate glass activated with Yb2O 3 , Nd2O 3 and Cr2O. This type shows luminescence in the region 970-1080 run. It is possible to use it in combination with a silicon detector. The glass type 2 is a borosilicate glass activated with UO2-Its wavelength region of luminescence is 51O-56O nm. It can be used in combination with a CdS/Cu2S or GaAs photo detector respectively.
SPIE Vol. 653 Optical Materials Technology for Energy Efficiency and Solar Energy Conversion V (1986) / 91Downloaded From: http://proceedings.spiedigitallibrary.org/ on 01/02/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx
Ion beam etching is applied to produce specimens less than 1 mu m thick with a free aperture of 4 mm in diameter. Plane specimens which have the same chemical composition and structure as the bulk material can be obtained. Infrared transmission spectra were obtained from fused silica samples Herasil and Suprasil W. The shapes of these transmission spectra are discussed. The absorption bands in the region 5-7 mu m have the same intensity for both glasses independent of the OH content of the silica. They are supposed to be overtones of the basic Si-O vibrations at 9.4 mu m and 12.4 mu m.
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