scholarly journals Luminescence quenching of Sm3+ ions in alkali borotellurite glasses

2016 ◽  
Vol 26 (2) ◽  
pp. 193
Author(s):  
Vu Phi Tuyen ◽  
Phan Van Do

The dependence of luminescence intensity on  Sm\(^{3 + }\) ions concentration in alkali borotellurite (ABTe) glasses has  been studied. The quenching of luminescence intensity happens  around 0.75 mol% concentration of Sm\(^{3 + }\) ions and it can relate the  energy transfer process through cross--relaxation (CR), the CR channels in  ABTe: Sm\(^{3 + }\) have been shown. The method of Van Uitert was used to find  the dominant interaction mechanism for energy transfer process. 

Author(s):  
Phan Văn Độ

Lead sodium telluroborate (LSTB) glasses doped with different concentrations of Sm3+ ions were prepared by melting method. The excitation, emission spectra and lifetimes of LSTB:Sm3+ have been investigated. The quenching of luminescence intensity happens after 0.75 mol% concentration of Sm3+ ions. The non-exponential decay curves are fitted to the Inokuti and Hirayama model to give the energy transfer parameters between Sm3+ ions. The dominant interaction mechanism for energy transfer process is dipole–dipole interaction. The energy transfer probability (WDA) increases whereas lifetime (τexp) decreases with the increase of Sm3+ concentration in glass.


2015 ◽  
Vol 10 (2) ◽  
pp. 2692-2695
Author(s):  
Bhekuzulu Khumalo

Heat has often been described as part of the energy transfer process. Information theory says everything is information. If everything is information then what type of information is heat, this question can be settled by the double slit experiment, but we must know what we are looking for. 


2015 ◽  
Vol 17 (48) ◽  
pp. 32297-32303 ◽  
Author(s):  
Xinhua Cao ◽  
Haichuang Lan ◽  
Zhenhua Li ◽  
Yueyuan Mao ◽  
Liming Chen ◽  
...  

A two-component light-harvesting organogel containing a naphthalimide-based gelator as a donor and a phosphorescent Ir(iii) complex as an acceptor was used to produce white-light-emitting organogels.


Author(s):  
L. Benatto ◽  
C. A. M. Moraes ◽  
G. Candiotto ◽  
K. R. A. Sousa ◽  
J. P. A. Souza ◽  
...  

Our results provide a simple relationship involving the driving force and binding energy of CT state to maximize charge generation in non-fullerene organic solar cells.


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