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Novel patterned layer to enhance conversion efficiency of amorphous silicon thin-film solar cells

: Kim, Y.D.; Han, K.-S.; Shin, J.-H.; Cho, J.-Y.; Im, C.; Lee, H.


Physica status solidi. A 211 (2014), Nr.7, S.1493-1498
ISSN: 0031-8965
ISSN: 1862-6300
ISSN: 1521-396X
ISSN: 1862-6319
Fraunhofer ISE ()

The substrate of an a-Si:H solar cell with microscale surface roughness generally shows high diffuse transmittance; however, it also has detrimental effects, including low open-circuit voltage and fill factor (FF). We applied planarization to the rough surface using spin-coating of ZnO nanoparticles dispersed in an ethanol-based solution. The resulting conversion efficiency of the solar cell increased by 18% owing to the higher open-circuit voltage and FF, with a small decrease in the diffused transmittance.