An approach to downconversion solar cells
| Autor: | Hans P. Jenssen, Mark B. Spitzer, Arlete Cassanho |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
Theory of solar cells
Materials science Photon Silicon Renewable Energy Sustainability and the Environment business.industry Band gap chemistry.chemical_element Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Multiple exciton generation Semiconductor chemistry law Physics::Space Physics Solar cell Optoelectronics Astrophysics::Earth and Planetary Astrophysics business Absorption (electromagnetic radiation) |
| Zdroj: | Solar Energy Materials and Solar Cells. 108:241-245 |
| ISSN: | 0927-0248 |
| DOI: | 10.1016/j.solmat.2012.08.011 |
| Popis: | We describe an approach to solar downconversion in which a semiconductor is used for absorption, and substitutional rare earth ions are used for emission. The semiconductor would provide broad-band absorption, and the rare earth ions would provide emission of multiple photons by a cross relaxation process in a narrow wavelength band. The emitted photons are then absorbed by a solar cell formed from a low band gap semiconductor such as silicon. Er and Yb are suggested owing to strong emission at 980 nm which are useful when the down-converter is paired with silicon solar cells. The use of InGaN is proposed for the absorbing host semiconductor. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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