| Autor: |
Tanaka, Katsu, Okamoto, Shinji |
| Předmět: |
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| Zdroj: |
Applied Physics Letters; 7/28/2003, Vol. 83 Issue 4, p647, 3p, 1 Diagram, 4 Graphs |
| Abstrakt: |
Green electroluminescence (EL) was observed in europium thiogallate (EuGa&sub2;S[sub4]) thin films, which is a stoichiometric phosphor material. The peak wavelength of the EL spectrum measured at 300 K was 536 nm. The spectrums color coordinates were (0.29,0.67), which is the pure green region. Simulated EL spectra at 77 and 300 K indicated that the green EL originates not from the host band transition but from an intra-atomic transition of the Eu²+;ion. From the transient EL wave form, the EL was observed at the leading edge of a rectangular applied voltage. This suggests that the Eu²+; centers are directly excited by the impact of hot carriers. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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