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Intense green / yellow emission in Ca 8 Zn ( SiO 4 ) 4 Cl 2 : Eu 2 þ , Mn 2 þ through energy transfer for blue-LED lighting
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hao, Zhendong Zhang, Xia Luo, Yongshi Wang, Xiao-Jun Zhang, Jiahua |
| Copyright Year | 2011 |
| Abstract | Eu2þ and Mn2þ co-doped Ca8Zn(SiO4)4Cl2 phosphors have been synthesized by a high temperature solid state reaction. Energy transfer from Eu2þ to Mn2þ is observed. The emission spectra of the phosphors show a green band at 505 nm of Eu2þ and a yellow band at 550 nm of Mn2þ . The excitation spectra corresponding to 4f-4f5d transition of Eu2þ cover the spectral range of 370–470 nm, well matching UV and/or blue LEDs. The shortening of fluorescent lifetimes of Eu2þ followed by simultaneous increase of fluorescent intensity of Mn2þ with increasing Mn2þ concentrations is studied based on energy transfer. Upon blue light excitation the present phosphor can emit intense green/ yellow in comparison with other chlorosilicate phosphors such as Eu2þ and Mn2þ co-doped Ca8Mg(SiO4)4Cl2 and Ca3SiO4Cl2, demonstrating a potential application in phosphor converted white LEDs. & 2011 Elsevier B.V. All rights reserved. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://04bc9bd1-a-c89f64e1-s-sites.googlegroups.com/a/georgiasouthern.edu/xwang/home/publications/161_J%20Lumin%20131%202011%20lv%20Wei.pdf?attachauth=ANoY7crfXkL52vUDzynr_NLScB2V4V-lOpSYAYso4A5xwVQ5TpCflm35yjOjrHhGrsTPZchI-1gnLtU7QBRWcmbn-hHpnwj2WQo95W5JzNdT_ZH5y-k14CSyERq-39uY08-ppZC1qAjH1b_etORAyDlHSxIRpV92ok5BxbSnpOa-xWNXwkzyZR5Nai3oroeHcs8uPd8HdRAHVi4TjLh5_MULZE1O4GrWUc7yFVOheVw9KibDz4NXg7Kuw10Uj_3erT2cJKcr5LZI&attredirects=0&d=1 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |