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Potassium carbonate (K2CO3) has demonstrated to be an efficient n-type dopant in improving the performance of the Alq3-based organic light-emitting diodes (OLEDs). K2CO3-doped tris(8-hydroxyquinolinato)aluminum (Alq3) layers with various concentrations were prepared by the co-evaporating method and the role of K2CO3 was investigated. When 10% K2CO3 was doped into an Alq3 electron-transporting layer,...
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