Journal article
Spin-dependent delayed luminescence from nongeminate pairs of polarons in pi-conjugated polymers
Physical review. B, Vol.66(24), pp.2412011-2412014
12/15/2002
DOI: 10.1103/PhysRevB.66.241201
Abstract
We measured cw photoinduced absorption (PA) and spin-1/2PA- and photoluminescence detected magnetic resonance (PADMR and PLDMR, respectively) in films of two representative pi-conjugated polymers; poly(phenylene-vinylene) and polythiophene. From the dependences of the polaron PA and PLDMR on the laser excitation intensity we conclude that the PLDMR is due to spin-dependent delayed luminescence from nongeminate pairs of polarons. Our findings imply that spin-dependent exciton formation in polymer light-emitting diodes leads to enhanced emission efficiency.
Details
- Title: Subtitle
- Spin-dependent delayed luminescence from nongeminate pairs of polarons in pi-conjugated polymers
- Creators
- M Wohlgenannt - University of IowaC Yang - University of UtahZ V Vardeny - University of Utah
- Resource Type
- Journal article
- Publication Details
- Physical review. B, Vol.66(24), pp.2412011-2412014
- Publisher
- Amer Physical Soc
- DOI
- 10.1103/PhysRevB.66.241201
- ISSN
- 2469-9950
- eISSN
- 2469-9969
- Number of pages
- 4
- Language
- English
- Date published
- 12/15/2002
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984428812402771
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