| Autor: |
Sun-Tae Hwang, Byung Woo Jeoung, Je Seok Kim, Taeho Moon, Hongcheol Lee, Gun Young Hong, Byung-Gil Ryu, Eun-A Moon |
| Rok vydání: |
2009 |
| Předmět: |
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| Zdroj: |
Electrochemical and Solid-State Letters. 12:J61 |
| ISSN: |
1099-0062 |
| DOI: |
10.1149/1.3126528 |
| Popis: |
The effects of Eu 2+ co-doping were examined on vacuum ultraviolet (VUV) photoluminescence properties of BaMgAl 10 O 17 :Mn 2+ phosphors. The BaMgAl 10 O 17 :Mn 2+ ,Eu 2+ phosphors were synthesized with various Eu concentrations ranging from 0 to 2 atom %. When Eu ions were added, the blue luminescence appeared with the decrease in the green luminescence. With increasing Eu concentration, the decay time (τ 1/10 ) gradually decreased from 11.7 ms (0 atom %) to 3.5 ms (2 atom %). The energy-transfer efficiencies (η Mn→Eu ) were analyzed with the average-decay time (τ av ) acquired by a double-exponential fitting, and the 2 atom % Eu sample showed the energy-transfer efficiency of 19%. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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