Low Cost Thin Film Building-Integrated PV Systems: Cooperative Research and Development Final Report, CRADA Number CRD-07-239

In this CRADA, NREL's Silicon group members performed the following research activities: 1) investigation of the role of hydrogen in growth of a mixed-phase nc-Si:H/a-Si:H material; 2) role of hydrogen in light-induced degradation of a-Si:H and development of Staebler-Wronski effect resistive a-Si:H; and 3) performing characterizations of UniSolar's a-Si:H and nc-Si materials, with goal to helpoptimizing large-area uniformity and quality of the UniSolar's nanocrystalline Si:H.