Comparison of optical properties of periodic photonic-plasmonic and randomly textured back reflectors for nc-Si solar cells
| Title | Comparison of optical properties of periodic photonic-plasmonic and randomly textured back reflectors for nc-Si solar cells |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Bhattacharya J, Chakravarty N, Pattnaik S, Slafer WD, Biswas R, Dalal V |
| Journal Title | Journal of Non-Crystalline Solids |
| Volume | 358 |
| Pages | 2313-2318 |
| Date Published | 09 |
| Type of Article | Article; Proceedings Paper |
| ISBN Number | 0022-3093 |
| Accession Number | WOS:000310394700092 |
| Keywords | ABSORPTION, Light trapping, Nano-crystalline silicon, Plasmonic enhancement |
| Abstract | Light trapping is essential to harvest long-wavelength red and near-infrared photons in thin film silicon solar cells. Light trapping in p-i-n thin film cells is commonly achieved with back-reflectors, and in n-i-p cells with textured front transparent conductors. We systematically compare the optical properties and performance of randomly roughened back reflectors with periodic plasmonic-photonic back-reflectors in p-i-n solar cells. The randomly textured back reflectors were prepared to have very high diffuse reflectance comparable to the state of the art. The periodic back reflectors of tapered nano-pillars/bumps show enhanced quantum efficiency and optical absorption over randomly structured back reflectors using the same solar cell architecture in nc-Si solar cells. The strong diffraction and light concentration in periodic back reflectors may be more beneficial than the light scattering offered by randomly textured back reflectors. (C) 2012 Elsevier B.V. All rights reserved. |
| URL | <Go to ISI>://WOS:000310394700092 |
| DOI | 10.1016/j.jnoncrysol.2011.12.108 |
| Alternate Journal | J. Non-Cryst. Solids |
