.Blue top-emitting organic light-emitting devices using Alq3 as phase shift adjustment layer[J].Optoelectronics Letters,2011,7(2):126-128 Blue top-emitting organic light-emitting devices using Alq3 as phase shift adjustment layer 孟彦龙 Institute of Microelectronics, Chinese Academy of Sciences； Abstract:       Blue top-emitting organic light-emitting devices (TEOLEDs) are demonstrated by employing Alq3 as phase shift adjustment layer (PSAL) to increase the phase shift on reflection of the top electrode within a range, which also improves the light out-coupling. By adjusting the thickness of PSAL, the CIE x,y of devices, which utilize 2, 7-Di-pyrenyl-9, 9-spiro-bifluorene (DPSF) as emitting layer, changes from (0.16, 0.50) to (0.18, 0.37). The maximum current efficiency of 7.1 cd/A is acquired under 4.5 V with an increasing luminance of 139 cd/m2. Compared with adjusting the total thickness of organic layer, it is more beneficial for achieving blue TEOLEDs with high efficiency. Hits: 4209 Download times: 241 View Full Text    Download reader