Abstract
An energy conversion model has been established for the intrinsic persistent luminescence in solids related to the native point defect levels, formations, and transitions. In this study, we showed how the recombination of charge carriers between different defect levels along the zero phonon line (ZPL) can lead to energy conversions supporting the intrinsic persistent phosphorescence in solids. This suggests that the key driving force for this optical phenomenon is the pair of electrons hopping between different charged defects with negative-Ueff. Such a negative correlation energy will provide a sustainable energy source for electron-holes to further recombine in a new cycle with a specific quantum yield. This will help us to understand the intrinsic persistent luminescence with respect to native point defect levels as well as the correlations of electronics and energetics. © the Owner Societies 2017.
| Original language | English |
|---|---|
| Pages (from-to) | 9457-9469 |
| Journal | Physical Chemistry Chemical Physics |
| Volume | 19 |
| Issue number | 14 |
| DOIs | |
| Publication status | Published - 2017 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Funding
The author BH gratefully acknowledges the support of the Natural Science Foundation of China (NSFC) for the Youth Scientist grant (Grant No. NSFC 11504309), the initial start-up grant support from the Department General Research Fund (Dept. GRF) from ABCT in the Hong Kong Polytechnic University (PolyU), and the Early Career Scheme (ECS) fund (Grant No. PolyU 253026/16P) from the Research Grant Council (RGC) in Hong Kong.
RGC Funding Information
- RGC-funded
