Coherent light trapping in thin-film photovoltaics
| Autor: | Nicholas P. Sergeant, Jung-Yong Lee, Mukul Agrawal, Shrestha Basu Mallick, Peter Peumans |
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| Rok vydání: | 2011 |
| Předmět: |
Imagination
Materials science business.industry Scattering media_common.quotation_subject Photovoltaic system Condensed Matter Physics law.invention Photovoltaics law Solar cell Optoelectronics General Materials Science Physical and Theoretical Chemistry Thin film business Absorption (electromagnetic radiation) Photonic crystal media_common |
| Zdroj: | MRS Bulletin. 36:453-460 |
| ISSN: | 1938-1425 0883-7694 |
| DOI: | 10.1557/mrs.2011.113 |
| Popis: | Thin-film photovoltaic technologies have an enormous potential to reduce the cost of solar electricity. However, because thin photoactive layers are used, optical absorption is incomplete unless light-trapping strategies are employed. Since conventional light-trapping approaches based on geometric scattering are less effective in thin-film cells, coherent light-trapping approaches that exploit the wave nature of light are being explored to enhance optical absorption. In this article, we look at the various strategies for coherent light trapping in thin-film solar cells, including photonic crystals, metal nanostructures, and multilayer stacks. The suitability of a particular strategy depends on factors such as configuration of the solar cell, process compatibility, cost, desired angular response, and materials usage. We also discuss the physical limits of light trapping in thin films. |
| Databáze: | OpenAIRE |
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