White light generation through phosphors excitation by UV-LED has become an important subject in WLED. In our study, compounds of SrSiO3¡GDy3+ white-emitting phosphors are synthesized via hydrothermal method.
In this study, the effects of annealing temperature, annealing time, contents of Dy3+ on the relative emission intensity of the phosphors are judicially investigated. Meanwhile, WLED produces a plenty of heat energy to cause phosphors high temperature when WLED is excited by electrical energy. The emission spectra of the phosphors are investigated excited by Hg arc lamp (£f=365nm) under high temperature environment. Another, two distinct emission bands from SrSiO3¡GDy3+ phosphors are found to be around 480nm and 572nm when the phosphor is excited by Hg arc lamp(£f=365nm). The combination of these two emissions forms a white light like color to naked eyes, showing that SrSiO3¡GDy3+ presents to be a promising phosphor for applications in fabricating white-light-emitting diodes through UV pumping.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0704107-144444 |
| Date | 04 July 2007 |
| Creators | Wang, Jen-li |
| Contributors | Bae-heng Tseng, Mei-ying Chang, Wood-hi Cheng, Fu-ji Kao |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0704107-144444 |
| Rights | not_available, Copyright information available at source archive |
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