Spring 2012 Conference
March 7 - 9

Plenary 7: Maxwell Zheng

Direct Growth of High Quality III-V Semiconductors on Metal Foils for Low-cost, High-efficiency PVs

The intrinsic advantages of III-V semiconductors for solar cells have been hobbled by the lack of low-cost substrates and processes, which has thus far limited market success of III-V solar cells. Here at Berkeley we are exploring a non-traditional approach which addresses these drawbacks. High optical quality polycrystalline InP films have been grown on non-epitaxial molybdenum substrates. Remarkably, these films with micron-sized grains have similar photoluminescence qualities as single-crystalline InP, and show great promise for high-efficiency, low-cost solar cells.