Improved optical transmission and current matching of a triple-junction solar cell utilizing sub-wavelength structures
Optics Express, ISSN: 1094-4087, Vol: 18, Issue: S3, Page: A308-A313
2010
- 37Citations
- 24Captures
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Metrics Details
- Citations37
- Citation Indexes37
- CrossRef37
- Captures24
- Readers24
- 24
Article Description
Sub-wavelength antireflective structures are fabricated on a silicon nitride passivation layer of a Ga0.5In0.5P/GaAs/Ge triple-junction solar cell using polystyrene nanosphere lithography followed by anisotropic etching. The fabricated structures enhance optical transmission in the ultraviolet wavelength range, compared to a conventional single-layer antireflective coating (ARC). The transmission improvement contributes to an enhanced photocurrent, which is also verified by the external quantum efficiency characterization of the fabricated solar cells. Under one-sun illumination, the short-circuit current of a cell with sub-wavelength structures is enhanced by 46.1% and 3.4% due to much improved optical transmission and current matching, compared to cells without an ARC and with a conventional SiNx ARC, respectively. Further optimizations of the sub-wavelength structures including the periodicity and etching depth are conducted by performing comprehensive calculations based on a rigorous couple-wave analysis method. © 2010 Optical Society of America.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85010126271&origin=inward; http://dx.doi.org/10.1364/oe.18.00a308; http://www.ncbi.nlm.nih.gov/pubmed/21165062; https://www.osapublishing.org/oe/abstract.cfm?uri=oe-18-S3-A308; https://www.osapublishing.org/viewmedia.cfm?URI=oe-18-S3-A308&seq=0; https://opg.optica.org/oe/abstract.cfm?uri=oe-18-S3-A308; https://dx.doi.org/10.1364/oe.18.00a308; https://opg.optica.org/oe/fulltext.cfm?uri=oe-18-S3-A308&id=204229
The Optical Society
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