Abstract
Efficient multilayered high yellow polymer light
emitting devices were successfully fabricated using a solution processed n
doped small molecular electron transporting layer composed of 1,3,5 tris(N phenyl benzimidazol 2 yl) benzene (TPBi) and
Cs 2 CO 3 . We found that the electroluminescence properties of the devices with Cs 2 CO 3 doped TPBi electron transport
layers (ETL) are significantly improved. The maximum luminance eff iciency of the device with Cs 2 CO 3 doped TPBi ETL
reached 6.7 cd/A, which is 20% higher as that of the undoped device. These results demonstrate that Cs 2 CO 3 can be used
as an effective n dopant in solution processed devices..
Keywords
Polymer light emitting devices, Electron trans port layer, Solution p rocessing , Electroluminescence.
Citation
MORA VEERA MADHAVA RAO, CHEOL HEE MOON, Solution processed cesium carbonate doped electron transport layer for multilayered polymer light emitting devices, Optoelectronics and Advanced Materials - Rapid Communications, 12, 3-4, March-April 2018, pp.164-167 (2018).
Submitted at: Sept. 27, 2017
Accepted at: April 5, 2018