TY - JOUR
T1 - Improved performance of polymer light-emitting devices based on blend of MEH-PPV and vinyl copolymer with 1,3,4-oxadiazole chromophores
AU - Yeh, Kun Ming
AU - Chen, Yun
N1 - Funding Information:
This work was supported by National Science Council of Taiwan, Republic of China through the Project NSC 94-2216-E-006-002.
PY - 2008/2
Y1 - 2008/2
N2 - We have developed a simple method to overcome the intrinsic defect of well-known poly[2-methoxy-5-(2′-ethylhexoxy)-p-phenylenevinylene] (MEH-PPV), i.e. rampant inter-chain interaction and imbalanced hole and electron fluxes, by blending with copolymer of polystyrene containing pendant aromatic 1,3,4-oxadiazole (PSOXD12). The addition of PSOXD12 reduces the inter-chain interaction and balances charge carrier transport simultaneously. Photoluminescence (PL), PL excitation and electroluminescence (EL) spectra of the blends reveal that the inter-chain interactions, such as aggregation and excimer/exciplex, are reduced markedly due to the presence of PSOXD12. Enhanced EL device performance has been achieved (16,261 cd/m2, 4.79 cd/A) as a result of both reduced inter-chain interaction and balanced charge transport.
AB - We have developed a simple method to overcome the intrinsic defect of well-known poly[2-methoxy-5-(2′-ethylhexoxy)-p-phenylenevinylene] (MEH-PPV), i.e. rampant inter-chain interaction and imbalanced hole and electron fluxes, by blending with copolymer of polystyrene containing pendant aromatic 1,3,4-oxadiazole (PSOXD12). The addition of PSOXD12 reduces the inter-chain interaction and balances charge carrier transport simultaneously. Photoluminescence (PL), PL excitation and electroluminescence (EL) spectra of the blends reveal that the inter-chain interactions, such as aggregation and excimer/exciplex, are reduced markedly due to the presence of PSOXD12. Enhanced EL device performance has been achieved (16,261 cd/m2, 4.79 cd/A) as a result of both reduced inter-chain interaction and balanced charge transport.
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U2 - 10.1016/j.orgel.2007.08.001
DO - 10.1016/j.orgel.2007.08.001
M3 - Article
AN - SCOPUS:36849059181
SN - 1566-1199
VL - 9
SP - 45
EP - 50
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
IS - 1
ER -