| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5354463 | Applied Surface Science | 2013 | 4 Pages |
Abstract
⺠Upconversion in NaYF4:Er3+/NaYF4 nanocrystals excited at 1620 nm were observed. ⺠An off-resonant absorption peak at around 1600 nm was observed. ⺠The off-resonant absorption is phonon assisted. ⺠Upconversion intensity excited at 1620 nm strongly depends on temperature. ⺠Upconversion under off-resonant excitation involves phonon-assisted transitions.
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Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
Xianjia Luo, Katsuhiro Akimoto,