Optimization of phase-engineered a-Si:H-based multijunction solar cells [electronic resource] : final technical report, October 2001 - July 2005 / C.R. Wronski ... [et al.].
Imprint
Golden, Colo. : National Renewable Energy Laboratory, [2006]
Mode of access: Internet from the NREL web site. Address as of 3/19/08: http://www.nrel.gov/docs/fy06osti/40400.pdf; current access available via PURL.