Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
79512 | Solar Energy Materials and Solar Cells | 2010 | 6 Pages |
Abstract
The efficiency of semiconductor solar cells could be greatly increased by down-conversion processes, which efficiently split incident solar photons into couples of photons with energy over the bandgap. Here, we show new down-conversion mechanisms in Er3+–Yb3+ co-doped glass-ceramics, where the ions are hosted by fluoride nanoparticles embedded in silica glass. By this means, 350–550 nm photons, absorbed by Er3+ ions, generate pairs of photons at the range of 650–1550 nm, emitted by Er3+ and Yb3+, with a quantum efficiency approaching the maximum of 200%.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
V.D. Rodríguez, V.K. Tikhomirov, J. Méndez-Ramos, A.C. Yanes, V.V. Moshchalkov,