Highly efficient organic–inorganic electroluminescence materials for solution-processed blue organic light-emitting diodes
作者:Chih-Chia Cheng、Yu-Lin Chu、Chih-Wei Chu、Duu-Jong Lee
DOI:10.1039/c6tc01989g
日期:——
A new and novel organic–inorganic light-emittingmaterial (POSS–DPCz) behaves as an effective chromophore and offers substantially improved fluorescence-color purity and quantum yield compared to control DPCz without incorporated POSS. When POSS–DPCz was utilized as an emissive layer in a solution-processed three-layer OLED device, the performance of the resulting device is almost two times higher
A series of novel N-coumarin derivatives containing oligothiophene-substituted N-coumarins as the core and bis(aryl)carbazoles as the substituent were synthesized and characterized. Their optical, electrochemical, and thermal properties were investigated. The electroluminescence (EL) properties of the selected materials were also studied. Solution-processed OLEDs with green and yellow light emission, turn-on voltages of 2.7-2.9 V, and maximum luminance efficiencies of up to 3.94 cd A(-1) at 17.6 mA cm(-2) (maximum power efficiency of 1.62 lm W-1) were prepared. (C) 2014 Elsevier Ltd. All rights reserved.