Amorphous silicon research Phase I. Annual subcontract report, August 1, 1994--July 31, 1995

Microstructure of amorphous-silicon-based solar cell materials by small-angle x-ray scattering. Annual technical report, April 6, 1995--April 5, 1996

“…USSC made an attempt to reproduce this low-gap material in a device [7] but could not achieve a reduced Voc that would have been consistent with such a lowering of the optical gap indicated in Table 3 (IACS#26, xS.54).…”

Microcrystalline Silicon Thin Films and Triple-Junction Solar Cells

“…In order to obtain higher efficient solar cells, a promising new technology is using µc-Si:H in the bottom cell of a-Si:H based thin film tandem solar cells [1][2][3] . Compared to the component cells used in a-Si:H/µc-Si:H tandem solar cells, the a-Si:H top and a-SiGe:H middle cells used in the a-Si:H/a-SiGe:H/µc-Si:H triple-junction solar cells should have higher conversion efficiency [4]. Efficiencies above 15.4% have been achieved for a-Si:H/a-SiGe:H/µc-Si:H triple-junction n-i-p solar cells [5], which is the world record.…”