The role of oxide interlayers in back reflector configurations for amorphous silicon solar cells

Thin oxide interlayers are commonly added to the back reflector of thin-film silicon solar cells to increase their current. To gain more insight in the enhancement mechanism, we tested different back reflector designs consisting of aluminium-doped zinc oxide (ZnO:Al) and/or hydrogenated silicon oxide (SiOx:H) interlayers with different metals ...

Accurate SIMS Doping Profiling of Aluminum-Doped Solid-Phase Epitaxy Silicon Islands

A procedure has been implemented for a quantitative aluminum-doping profiling of µm-scale aluminum-induced solid-phase-epitaxy (SPE) Si islands formed at 400°C. The aluminum concentration was measured to be 1–2×1019 cm?3, which is about 10 times higher than previously reported electrical activation levels. The elemental concentration was...