| Autor: |
Nogami Jun, Lee Kenneth K.C., Kumar Kitty, Herman Peter R., Kherani Nazir P. |
| Jazyk: |
angličtina |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
EPJ Photovoltaics, Vol 4, p 45101 (2013) |
| Druh dokumentu: |
article |
| ISSN: |
2105-0716 |
| DOI: |
10.1051/epjpv/2013015 |
| Popis: |
This study reports a high-resolution hard-mask laser writing technique to facilitate the selective etching of crystalline silicon (c-Si) into an inverted-pyramidal texture with feature size and periodicity on the order of the wavelength which, thus, provides for both anti-reflection and effective light-trapping of infrared and visible light. The process also enables engineered positional placement of the inverted-pyramid thereby providing another parameter for optimal design of an optically efficient pattern. The proposed technique, a non-cleanroom process, is scalable for large area micro-fabrication of high-efficiency thin c-Si photovoltaics. Optical wave simulations suggest the fabricated textured surface with 1.3 μm inverted-pyramids and a single anti-reflective coating increases the relative energy conversion efficiency by 11% compared to the PERL-cell texture with 9 μm inverted pyramids on a 400 μm thick wafer. This efficiency gain is anticipated to improve further for thinner wafers due to enhanced diffractive light trapping effects. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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