Theoretical enhancement of solar cell efficiency by the application of an ideal ‘down-shifting’ thin film
| Autor: | S.O. Martin, A. B. Wedding, C.P. Thomas |
|---|---|
| Přispěvatelé: | Thomas, Christopher Paul, Wedding, Anthony Bruce, Martin, Stewart Oliver |
| Rok vydání: | 2012 |
| Předmět: |
Theory of solar cells
Materials science Silicon optical thin films Renewable Energy Sustainability and the Environment business.industry Thermodynamic efficiency limit Energy conversion efficiency chemistry.chemical_element down-shifting Quantum dot solar cell Polymer solar cell Surfaces Coatings and Films Electronic Optical and Magnetic Materials Solar cell efficiency chemistry detailed balance silicon solar cells luminesence Optoelectronics Quantum efficiency efficiency enhancement business |
| Zdroj: | Solar Energy Materials and Solar Cells. 98:455-464 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2011.11.027 |
| Popis: | Poor ultraviolet (UV) quantum conversion efficiency contributes to a reduction in the efficiency of silicon based photovoltaic cells. In the UV, the main loss mechanism is through surface recombination of photo-generated carriers due to the shallow absorption depth of high energy photons. One method for greater utilisation of the UV region is by down-shifting UV photons to lower energies where the quantum efficiency of silicon is higher. This work determines the potential enhancement in efficiency that can be obtained by a luminescent down-shifting layer applied to silicon based solar cells. The efficiency is determined through detailed balance arguments. The maximum calculated efficiency enhancement due to an ideal down shifting process is 0.6% absolute using the AM1.5G standard spectra. Applying a similar analysis to a multicrystalline silicon solar cell results in an efficiency enhancement due to the down-shifting process of 0.17% absolute. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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