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Incident light adjustable solar cell by periodic nanolens architecture

Title
Incident light adjustable solar cell by periodic nanolens architecture
Authors
Yun, Ju-HyungLee, EunsongyiPark, Hyeong-HoKim, Dong-WookAnderson, Wayne A.Kim, JoondongLitchinitser, Natalia M.Zeng, JinweiYi, JunsinKumar, M. Melvin DavidSun, Jingbo
Ewha Authors
김동욱
SCOPUS Author ID
김동욱scopus
Issue Date
2014
Journal Title
SCIENTIFIC REPORTS
ISSN
2045-2322JCR Link
Citation
vol. 4
Publisher
NATURE PUBLISHING GROUP
Indexed
SCI; SCIE; SCOPUS WOS
Abstract
Could nanostructures act as lenses to focus incident light for efficient utilization of photovoltaics? Is it possible, in order to avoid serious recombination loss, to realize periodic nanostructures in solar cells without direct etching in a light absorbing semiconductor? Here we propose and demonstrate a promising architecture to shape nanolenses on a planar semiconductor. Optically transparent and electrically conductive nanolenses simultaneously provide the optical benefit of modulating the incident light and the electrical advantage of supporting carrier transportation. A transparent indium-tin-oxide (ITO) nanolens was designed to focus the incident light-spectrum in focal lengths overlapping to a strong electric field region for high carrier collection efficiency. The ITO nanolens effectively broadens near-zero reflection and provides high tolerance to the incident light angles. We present a record high light-conversion efficiency of 16.0% for a periodic nanostructured Si solar cell.
DOI
10.1038/srep06879
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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