Photoexcitations From Intrachain and Interchain Excitons of Surface Plasmon Mediated Conjugated Polymers for PLED

Author

Kwan Hyun Cho ; Kyung Cheol Choi ; Je-Hyung Kim ; Yong-Hoon Cho

Author_Institution

Dept. of Electr. Eng., KAIST, Daejeon, South Korea

Volume

8

Issue

8

fYear

2012

Firstpage

439

Lastpage

443

Abstract

Picosecond time-resolved spectroscopy studies are performed on surface plasmon (SP) mediated conjugated polymers. Huang-Rhys factor and photoluminescence (PL) decay time at low temperature were unchanged with the respect to thickness of Ag nanostructures due to a decrease in the surface plasmon coupling rates (Okamoto , Appl. Phys. Lett., vol. 87, 07112, 2005). However, Huang-Rhys factor and PL decay time at room temperature were increased with respect to the thickness of the Ag nanostructures. Relatively strong emission from the interchain excitons of surface plasmon (SP) mediated conjugated polymers in the film-like Ag nanostructure was verified by PL decay dynamics from time-resolved photoluminescence (TR-PL) measurement.

Keywords

conducting polymers; excitons; light emitting diodes; photoexcitation; photoluminescence; silver; surface plasmons; time resolved spectroscopy; Ag; PLED; interchain excitons; intrachain excitons; photoexcitations; photoluminescence decay; picosecond time-resolved spectroscopy; polymer light emitting diode; surface plasmon mediated conjugated polymer; time resolved photoluminescence measurement; Excitons; Nanostructures; Photoluminescence; Plasmons; Plastics; Temperature; Temperature measurement; Ag nanostructures; MEH-PPV films; surface plasmon (SP); time-resolved spectroscopy;

fLanguage

English

Journal_Title

Display Technology, Journal of

Publisher

ieee

ISSN

1551-319X

Type

jour

DOI

10.1109/JDT.2012.2192257

Filename

6212471