Abstract
An up-converting material can generate one high-energy photon for every two or more incident low-energy photons. This material when placed on the rear side of a traditional bi-facial photovoltaic solar cell has the potential to increase the overall efficiency of the PV device by utilising sub-bandgap photons that would otherwise be transmitted through the device. This paper reviews and examines the application of rare-earth doped inorganic phosphors for achieving external quantum efficiencies for sub-bandgap photons for a bi-facial crystalline silicon photovoltaic device. The mechanisms for up-conversion are discussed and recent experimental results on a bi-facial silicon photovoltaic-upconversion device are analysed. © 2007 Elsevier B.V. All rights reserved.
Original language | English |
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Pages (from-to) | 829-842 |
Number of pages | 14 |
Journal | Solar Energy Materials and Solar Cells |
Volume | 91 |
Issue number | 9 |
DOIs | |
Publication status | Published - 23 May 2007 |
Keywords
- Erbium
- Luminescence
- Photovoltaics
- Rare-earths
- Silicon
- Solar cells
- Up-conversion