Advances in material/cell/submodule research in the DOE/SERI amorphous silicon research project

Advances in material, cell, and submodule research in the DOE/SERI Amorphous Silicon Research Project (ASRP) are reviewed. The program was initiated in 1987, directed toward achieving the following objectives in 1990: (i) efficiencies of 10% and 13% respectively, for amorphous silicon single-junction and multijunction submodules (1000 cm²) and (ii) an efficiency of 18% for multijunction cells (1 cm²), with associated stability criteria. Efficiency levels are currently at 9.4% and 11.1% for single-junction and multijunction submodules and at 13.14% for multijunction cells. A review is also given of major highlights in fundamental research activities.