정의: Photoluminescence is light emission from any form of matter after the absorption of photons. It is one of many forms of luminescence and is initiated by photoexcitation, hence the prefix photo-. Following excitation, various relaxation processes typically occur in which other photons are re-radiated. Time periods between absorption and emission may vary: ranging from short femtosecond-regime for emission involving free-carrier plasma in inorganic semiconductors or metals up to milliseconds for phosphorescence processes in molecular systems; and under special circumstances delay of emission may even span to minutes or hours.
| 핵심 연구 분야 | Cryptography |
|---|---|
| 주요 연도 | 2020년 |
| 주요 연관 키워드 | engineering |
| 좋아요 수 | 0 |