Near-omni-directional sub-micron silica light-trapping monolayer for amorphous Si photovoltaic devices

The non-closely packed (surface-coverage of 55-65%) sub-micron silica sphere (400 nm) light-trapping monolayer was introduced to boost photocurrent (efficiency) of thin film amorphous solar cells by 15% (6.9%). The enhancement is nearly omni-directional.