Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 22, Issue 13, Pages 2846-2854Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201200199
Keywords
polymer light-emitting diodes; polymer solar cells; cathode interlayers; functionalized polymers
Categories
Funding
- Ministry of Science and Technology, China (MOST) [2009CB623601, 2009CB930604]
- Natural Science Foundation of China [21125419, 50990065, 51010003, 51073058, 20904011]
- National Science Foundation [DMR-1005546]
- Direct For Mathematical & Physical Scien [0843934, 1005546] Funding Source: National Science Foundation
- Division Of Materials Research [0843934, 1005546] Funding Source: National Science Foundation
Ask authors/readers for more resources
A series of amino N-oxide functionalized polyfluorene homopolymers and copolymers (PNOs) are synthesized by oxidizing their amino functionalized precursor polymers (PNs) with hydrogen peroxide. Excellent solubility in polar solvents and good electron injection from high work-function metals make PNOs good candidates for interfacial modification of solution processed multilayer polymer light-emitting diodes (PLEDs) and polymer solar cells (PSCs). Both PNOs and PNs are used as cathode interlayers in PLEDs and PSCs. It is found that the resulting devices show much better performance than devices based on a bare Al cathode. The effect of side chain and main chain variations on the device performance is investigated. PNOs/Al cathode devices exhibit better performance than PNs/Al cathode devices. Moreover, devices incorporating polymers with para-linkage of pyridinyl moieties exhibit better performance than those using polymers with meta-linked counterparts. With a poly[(2,7-(9,9-bis(6-(N,N-diethylamino)-hexyl N-oxide)fluorene))-alt-(2,5-pyridinyl)] (PF6NO25Py) cathode interlayer, the resulting device exhibits a luminance efficiency of 16.9 cd A-1 and a power conversion efficiency of 6.9% for PLEDs and PSCs, respectively. These results indicate that PNOs are promising new cathode interlayers for modifying a range of optoelectronic devices.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available