Temperature effect on the emission spectra of narrow band Mn4+phosphors for application in LEDs

2017 ◽  
Vol 19 (48) ◽  
pp. 32505-32513 ◽  
Author(s):  
Tadeusz Lesniewski ◽  
Sebastian Mahlik ◽  
Marek Grinberg ◽  
Ru-Shi Liu

In narrow-band Mn4+phosphors, as the temperature increases, the intensity of both Stokes and anti-Stokes phonon sidebands increases with respect to zero-phonon line.

1996 ◽  
Vol 446 ◽  
Author(s):  
X.M. Fang ◽  
W.K. Liu ◽  
W. Shan ◽  
T. Chatterjee ◽  
P.J. Mccann ◽  
...  

AbstractPhotoluminescence measurements have been made on Eu-doped CaF2 thin films grown on Si(100) substrates. The dependence of the integrated intensity of both the zero-phonon line and the vibronic sideband on temperature and Eu concentration has been studied in the range of 10 – 300 K and 0.14 – 7.48 at. %, respectively. An anti-Stokes feature is visible in the emission spectra at 75 K, indicating a significant occupation of the excited vibrational states of Eu2+ by phonons before the transition at temperatures above 75 K. The integrated intensity of the vibronic sideband increases slightly as temperature increases. The solubility of Eu in CaF2 thin films grown on Si(100) is found to be somewhere around 4.05 at. % as confirmed by the increase of the line width of x-ray rocking curves and the decrease in the integrated intensity of the zero-phonon line with Eu concentration.


2017 ◽  
Vol 96 (7) ◽  
Author(s):  
T. B. Biktagirov ◽  
A. N. Smirnov ◽  
V. Yu. Davydov ◽  
M. W. Doherty ◽  
A. Alkauskas ◽  
...  

CLEO: 2015 ◽  
2015 ◽  
Author(s):  
Michael Gould ◽  
Nicole K. Thomas ◽  
Yuncheng Song ◽  
Minjoo Larry Lee ◽  
Kai-Mei Fu

1977 ◽  
Vol 32 (2) ◽  
pp. 113-118
Author(s):  
E. Sigmund

A practical method for the calculation of canonical exponential transformations in closed analytic forms is presented. An application to an antiresonant electron-phonon system is given. In particular the optical zero phonon line is calculated, which reflects the resonant nature of the system


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