Triangular metallic gratings for large absorption enhancement in thin film Si solar cells
Author
Battal, E.
Yogurt, T.A.
Aygun L.E.
Okyay, Ali Kemal
Date
2012Source Title
Optics Express
Print ISSN
10944087
Publisher
Optical Society of American (OSA)
Volume
20
Issue
9
Pages
9458 - 9464
Language
English
Type
ArticleItem Usage Stats
158
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views
104
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Abstract
We estimate high optical absorption in silicon thin film photovoltaic devices using triangular corrugations on the back metallic contact. We computationally show 21.9% overall absorptivity in a 100-nmthick silicon layer, exceeding any reported absorptivity using single layer gratings placed on the top or the bottom, considering both transverse electric and transverse magnetic polarizations and a wide spectral range (280 - 1100 nm). We also show that the overall absorptivity of the proposed scheme is relatively insensitive to light polarization and the angle of incidence. We also discuss the implications of potential fabrication process variations on such a device. © 2012 Optical Society of America.
Keywords
Optical constantsOptics
Absorption enhancement
Absorptivities
Angle of Incidence
Fabrication process
Metallic contacts
Metallic gratings
Si solar cells
Silicon layer
Silicon thin film
Single layer
Transverse electrics
Transverse magnetic polarization
Wide spectral range
Thin films
metal
silicon
absorption
article
artificial membrane
chemistry
equipment
equipment design
instrumentation
power supply
radiation scattering
refractometry
solar energy
Absorption
Electric Power Supplies
Equipment Design
Equipment Failure Analysis
Membranes, Artificial
Metals
Refractometry
Scattering, Radiation
Silicon
Solar Energy
Permalink
http://hdl.handle.net/11693/21500Published Version (Please cite this version)
http://dx.doi.org/10.1364/OE.20.009458Collections
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