Comment on "Yield of singlet excitons in organic light-emitting devices: a double modulation photoluminescence-detected magnetic resonance study"

Update item information
Publication Type Journal Article
School or College College of Science
Department Physics
Creator Vardeny, Zeev Valentine; Ehrenfreund, Eitan A.
Other Author Yang, C. G.
Title Comment on "Yield of singlet excitons in organic light-emitting devices: a double modulation photoluminescence-detected magnetic resonance study"
Date 2006
Description In a recent Letter [1] Lee et al. studied the spin 1/2 photoluminescence-detected magnetic resonance (PLDMR) of a soluble derivative of poly-phenylene vinylene [MEH-PPV] using a double modulation scheme, where both the laser excitation intensity and the microwave power were modulated at ?ex and ?? (?? ??ex), respectively. The obtained results were used to attempt differentiating between the quenching and the spin dependent recombination (SDR) models for PLDMR [2]. Also, an alternative model to the SDR was introduced [1] in which triplet excitons interact with polarons, (T-P model) leading to a reduction of both species. It was concluded [1] from the ?? dependence of PLDMR that the polaron recombination time is ~30 ?s.
Type Text
Publisher American Physical Society
Volume 96
Issue 8
First Page 89701
Last Page 89701
DOI 10.1103/PhysRevLett.96.089701
Subject Singlet excitons; PLDMR; Poly-phenylene vinylene; MEH-PPV; Quenching; Spin dependent recombination; OLED
Subject LCSH Magnetic resonance; Organic semiconductors -- Optical properties
Language eng
Bibliographic Citation Yang, C. G., Ehrenfreund, E., & Vardeny, Z. V.(2006). Comment on "Yield of singlet excitons in organic light-emitting devices: a double modulation photoluminescence-detected magnetic resonance study." Physical Review Letters, 96(8), 089701-1.
Rights Management © American Physical Society http://dx.doi.org/10.1103/PhysRevLett.96.089701
Format Medium application/pdf
Format Extent 77,601 bytes
Identifier ir-main,10085
ARK ark:/87278/s64x5rwq
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 702571
Reference URL https://collections.lib.utah.edu/ark:/87278/s64x5rwq
Back to Search Results