Assessment of the micromorph tandem solar cell

Abstract

The bringing of high efficiency photovoltaics from extraterrestrial applications to terrestrial ones has begun to be realized. The micromorph tandem solar cell shows great promise as it boasts both high efficiency and low cost. The device consists of an amorphous top cell and a microcrystalline bottom cell. Optimization through high-rate silicon deposition, light trapping, and film growth make efficiencies of 15% possible. Current micromorph cells in the market are competitive in performance and cost to other similar technologies. This paper reviews the research progress and market penetration of this young but promising technology.