Delayed luminescence of the H3 centre in diamond
The H3 centre in diamond is shown to present, besides the known prompt luminescence with a temperature independent decay time and quantum yield up to 500 K, a delayed luminescence identical to the prompt one, and a temperature dependent decay time of the order of a few milliseconds. The experimental...
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| Formato: | article |
| Idioma: | eng |
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1000
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| Texto completo: | http://hdl.handle.net/10773/6490 |
| País: | Portugal |
| Oai: | oai:ria.ua.pt:10773/6490 |
| Resumo: | The H3 centre in diamond is shown to present, besides the known prompt luminescence with a temperature independent decay time and quantum yield up to 500 K, a delayed luminescence identical to the prompt one, and a temperature dependent decay time of the order of a few milliseconds. The experimental results are interpreted as due to reversible non-radiative transitions from the emitting 1B1 excited level to triplet levels. Also upon excitation into the H13 absorption a delayed luminescence with a temperature independent decay of 1 ms indicates that de-excitation of H13 into the 1B1 level may proceed via an intermediate triplet level |
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