Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Huang, Chien-Hao | en_US |
dc.contributor.author | Chen, Teng-Ming | en_US |
dc.date.accessioned | 2014-12-08T15:12:09Z | - |
dc.date.available | 2014-12-08T15:12:09Z | - |
dc.date.issued | 2011-02-10 | en_US |
dc.identifier.issn | 1932-7447 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1021/jp107856d | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/9311 | - |
dc.description.abstract | A novel single-composition white-emitting phosphor Ca(3)Y(GaO)(3)(BO(3))(4):Ce(3+), Mn(2+),Tb(3+) has been synthesized by a high-temperature solid-state reaction. The spectral overlap between the emission band of Ce(3+) and the excitation band of Mn(2+), which supports the occurrence of the energy transfer from Ce(3+) to Mn(2+), has been studied and demonstrated to be a resonant type via a dipole-quadrupole mechanism. Because there was no spectral overlap between the emission spectra of Ce(3+) and excitation band of Tb(3+) in our study, no energy transfer from Ce(3+) to Tb(3+) was observed, Indicating that Ce(3+) and Tb(3+) were coexcited. Through effective resonance-type energy transfer and coexcitation, the chromaticity coordinates of Ca(3)Y(GaO)(3)(BO(3))(4):Ce(3+),Mn(2+),Tb(3+) phosphors can be tuned from (0.152, 0.061) for Ca(3)Y-(GaO)(3)(BO(3))(4):Ce(3+) to (0.562, 0.408) for Ca(3)Y(GaO)(3)(BO(3))(4):Mn(2+), and eventually reaching (0.314, 0.573) for Ca(3)Y(GaO)(3)(BO(3))(4):Tb(3+). A white light-emitting diode (LED) was fabricated by using the white-emitting single-composition (Ca(0.97))(3)(Y(0.92))(GaO)(3)(BO(3))(4):0.01Ce(3+),-0.03Mn(2+),0.07Tb(3+) pumped by a 365 nm UV-chip. Our results indicated that the CIE chromaticity coordinates and correlated color temperature (CCT) for white UV-LEDs were (0.31, 0.33) and 6524 K, respectively. Therefore, our novel white Ca(3)Y(GaO)(3)(BO(3))(4):Ce(3+),Mn(2+),Tb(3+) can serve as a key material for phosphor-converted white-light UV-LEDs. | en_US |
dc.language.iso | en_US | en_US |
dc.title | A Novel Single-Composition Trichromatic White-Light Ca(3)Y(GaO)(3)(BO(3))(4):Ce(3+),Mn(2+),Tb(3+) Phosphor for UV-Light Emitting Diodes | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1021/jp107856d | en_US |
dc.identifier.journal | JOURNAL OF PHYSICAL CHEMISTRY C | en_US |
dc.citation.volume | 115 | en_US |
dc.citation.issue | 5 | en_US |
dc.citation.spage | 2349 | en_US |
dc.citation.epage | 2355 | en_US |
dc.contributor.department | 應用化學系 | zh_TW |
dc.contributor.department | Department of Applied Chemistry | en_US |
Appears in Collections: | Articles |