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dc.contributor.authorLin, Alberten_US
dc.contributor.authorZhong, Yan-Kaien_US
dc.contributor.authorFu, Sze-Mingen_US
dc.date.accessioned2014-12-08T15:33:35Z-
dc.date.available2014-12-08T15:33:35Z-
dc.date.issued2013-11-04en_US
dc.identifier.issn1094-4087en_US
dc.identifier.urihttp://dx.doi.org/10.1364/OE.21.0A1052en_US
dc.identifier.urihttp://hdl.handle.net/11536/23275-
dc.description.abstractThe anti-reflection coating(ARC) based on dielectric nanoparticles has been recently proposed as a new way to achieve the low reflectance required for solar cell front surfaces. In this scenario, the Mie modes associated with the dielectric nano-particles are utilized to facilitate photon forward scattering. In this work, versatile designs together with systematically optimized geometry are examined, for the ARCs based on dielectric scatterers. It is found that the Si3N4-TiO2 or SiO2-TiO2 stack is capable of providing low reflectance while maintaining a flat and passivated ARC-semiconductor interface which can be beneficial for reduced interface recombination and prevent V-OC degradation associated with topography on the active materials. It is also confirmed that the plasmonic nano-particles placed at the front side of solar cells is not a preferred scheme, even with thorough geometrical optimization. At the ultimate design based on mixed graded index(GI) Mie-scattering, the averaged reflectance can be as low as 0.25%. Such a low reflectance is currently only achievable by ultra-long silicon nano-tips, but silicon nanotips introduce severe surface recombination. On the other hand, the mixed GI Mie design preserves a flat and passivated ARC-silicon interface, with total thickness reduced to 279.8nm, much thinner than 1.6 mu m for silicon nanotips. In addition, the light trapping capability of mixed GI Mie design is much better than silicon nanotips. In fact, when compared to the state-of-art TiO2 light trapping anti-reflection coating, the mixed GI Mie design provides same light trapping capability while providing much lower reflectance. (C) 2013 Optical Society of Americaen_US
dc.language.isoen_USen_US
dc.titleThe versatile designs and optimizations for cylindrical TiO2-based scatterers for solar cell anti-reflection coatingsen_US
dc.typeArticleen_US
dc.identifier.doi10.1364/OE.21.0A1052en_US
dc.identifier.journalOPTICS EXPRESSen_US
dc.citation.volume21en_US
dc.citation.issue22en_US
dc.citation.spageA1052en_US
dc.citation.epageA1064en_US
dc.contributor.department電子工程學系及電子研究所zh_TW
dc.contributor.departmentDepartment of Electronics Engineering and Institute of Electronicsen_US
dc.identifier.wosnumberWOS:000327007800015-
dc.citation.woscount0-
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