An optoelectronic device comprising an optically active layer that includes a plurality of domes is presented. The plurality of domes is arrayed in two dimensions having a periodicity in each dimension that is less than or comparable with the shortest wavelength in a spectral range of interest. By virtue of the plurality of domes, the optoelectronic device achieves high performance. A solar cell having high energy-conversion efficiency, improved absorption over the spectral range of interest, and an improved acceptance angle is presented as an exemplary device.
STATEMENT REGARDING FEDERALLY-SPONSORED RESEARCH
This invention was made with Government support under contracts DE-FG02-07ER46426 and DE-FG36-08GO18004 awarded by the Department of Energy. The Government has certain rights in this invention.