The Dependence of OLED External Efficiency on the Mass Concentration of Europium(III) Dispersed in PVK

2019 ◽  
Vol 39 (1) ◽  
pp. 475-480 ◽  
Author(s):  
Gerson Santos ◽  
Fernando J. Fonseca ◽  
Adnei M. Andrade
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