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- Title
Transparent conductor-embedding nanocones for selective emitters: optical and electrical improvements of Si solar cells.
- Authors
Kim, Joondong; Yun, Ju-Hyung; Kim, Hyunyub; Cho, Yunae; Park, Hyeong-Ho; Kumar, M. Melvin David; Yi, Junsin; Anderson, Wayne A.; Kim, Dong-Wook
- Abstract
Periodical nanocone-arrays were employed in an emitter region for high efficient Si solar cells. Conventional wet-etching process was performed to form the nanocone-arrays for a large area, which spontaneously provides the graded doping features for a selective emitter. This enables to lower the electrical contact resistance and enhances the carrier collection due to the high electric field distribution through a nanocone. Optically, the convex-shaped nanocones efficiently reduce light-reflection and the incident light is effectively focused into Si via nanocone structure, resulting in an extremely improved the carrier collection performances. This nanocone-arrayed selective emitter simultaneously satisfies optical and electrical improvement. We report the record high efficiency of 16.3% for the periodically nanoscale patterned emitter Si solar cell.
- Subjects
CYTOPROTECTION; CYTOLOGY; EMBRYOLOGY; PHOTOVOLTAIC cells; ARTIFICIAL photosynthesis; SOLAR cells; SOLAR energy
- Publication
Scientific Reports, 2015, p9256
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep09256