Luminescence properties of Tb[sup 3+]–Sm[sup 3+] codoped glasses for white light emitting diodes
Liang, X., Yang, Y., Zhu, C., Yuan, S., Chen, G., Pring, A. and Xia, F. (2007) Luminescence properties of Tb[sup 3+]–Sm[sup 3+] codoped glasses for white light emitting diodes. Applied Physics Letters, 91 (9). 091104.
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Photoluminescence properties of silicate and borosilicate glasses codoped with Tb3+ and Sm3+ions have been characterized by excitation and emission spectroscopies. When excited by ultraviolet light the glasses emit a combination of green and orange-red wavelengths giving white light. The ratio of the intensities of orange-red to green emissions can be tuned by varying both the concentration of the Sm3+ ion and an the composition of the glass matrix. The excitation and emission spectra show a self-quenching effect for the Sm3+ions and an energy transfer from Tb3+ (5D4) to Sm3+ (4G 5∕2).
|Publication Type:||Journal Article|
|Publisher:||American Institute of Physics|
|Copyright:||© 2007 American Institute of Physics|
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