Intramolecular Energy Transfer in Rare Earth Chelates. Role of the Triplet State

1961 ◽  
Vol 34 (3) ◽  
pp. 743-748 ◽  
Author(s):  
G. A. Crosby ◽  
R. E. Whan ◽  
R. M. Alire
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Triplet State ◽  
Intramolecular Energy Transfer

Eu and Yb Excitation Mechanisms in ZnS, CaS, SrS and InP

1993 ◽  
Vol 301 ◽  
Author(s):  
M. Godlewski ◽  
K. Światek ◽  
B. Monemar
Keyword(s):  
Energy Transfer ◽  
Rare Earth ◽  
Excited State ◽  
Exciton State ◽  
Experimental Results ◽  
Excitation Mechanism ◽  
Core State ◽  
Excitonic State ◽  
Excitation Mechanisms

ABSTRACTThe role of the excitonic excitation mechanism of the rare earth (RE) intra-shell emission is discussed. Two cases are analyzed. For Yb ion in InP 4f-4f emission of Yb3+ is induced by energy transfer from bound exciton state to the RE core state. For Eu in CaS and SrS RE emission is induced by carrier trapping directly to the excited state of Eu2+ ion. Also in this case the intermediate excitonic state may participate in RE excitation, as suggested by some experimental results.

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