%0 Journal Article %J Progress in Photovoltaics: Research and Applications %D 1995 %T Optical properties of intrinsic silicon at 300 K %A Martin A Green %A Keevers, Mark J. %B Progress in Photovoltaics: Research and Applications %V 3 %P 189 - 192 %8 1995 %G eng %R 10.1002/pip.4670030303