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Your search keyword '"Serein-Spirau, F."' showing total 12 results
Start Over Author "Serein-Spirau, F." Publisher elsevier b.v.
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12. Polymer light-emitting diodes with a phenyleneethynylene derivative as a novel hole blocking layer for efficiency enhancements

Author

Wantz, G., Dautel, O., Vignau, L., Serein-Spirau, F., Lère-Porte, J.P., Hirsch, L., Moreau, J.J.E., and Parneix, J.P.

Subjects
*LIGHT emitting diodes, *ELECTROMAGNETIC fields, *PARTICLES (Nuclear physics), *FREE electron theory of metals
Abstract

Abstract: This paper reports on the use of an electron transport layer (ETL) in polymer light-emitting diodes based on poly(2,5-bis(3′,7′-dimethyl-octyloxy)1,4-phenylene-vinylene) (BDMO-PPV). This ETL is inserted between BDMO-PPV and a calcium cathode as a hole blocking layer (HBL). A novel phenyleneethynylene derivative (ImPE) is proposed and compared to well-known materials such as tris(8-hydroxyquinoline) aluminum (Alq3) and bathocuproïne (BCP). Efficient hole blocking is achieved leading to yield improvements at low luminances. With a 8nm-thick ImPE layer, at 1cd/m2, the power efficiency reaches 1.2lm/W whereas a BDMO-PPV-only PLED exhibits a 0.13lm/W power efficiency. ImPE enables to reach higher performances than Alq3 for low luminances (<20cd/m2). However, for luminances higher than 350cd/m2, it is demonstrated that the hole blocking in no more efficient because of a too strong electric field. [Copyright &y& Elsevier] more...

Published
2006
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