Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1811327 | Physica B: Condensed Matter | 2011 | 4 Pages |
Abstract
Pr3+, Yb3+ co-doped Y2O3 transparent ceramics have been prepared by the solid state reaction and vacuum sintering. Down-conversion near infrared emission has been demonstrated upon a 482 nm excitation. The energy of the 482 nm blue photon was first absorbed by Pr3+ and then delivered to Yb3+. Possible energy transfer mechanisms from Pr3+ to Yb3+ have been discussed. Under the 482 nm excitation, the Pr4+–Yb2+ charge transfer state would not seriously influence the energy transfer process. The dominant one should be either the cooperative down-conversion or the two-step photon emission. The efficient down-conversion near infrared emission has potential application in enhancing the conversion efficiency of crystalline silicon solar cells.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Guang-min Yang, Sheng-ming Zhou, Hui Lin, Hao Teng,