Optically detected magnetic resonance study of polaron and triplet-exciton dynamics in poly(3-hexylthiophene) and poly(3-dodecylthiophene) films and solutions

Journal Article · Mon Aug 27 00:00:00 EDT 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.65.1140· OSTI ID:6380701

Swanson, L S; Shinar, J; Yoshino, K ^[1]

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1. Ames Laboratory, Department of Energy, Ames, IA (USA) Department of Physics, Iowa State University, Ames, IA (USA) Department of Electrical Engineering, Faculty of Engineering, Osaka University, Osaka (Japan)

The {ital X}-band optically detected magnetic resonance of poly(3-hexylthiophene) and poly(3-dodecylthiophene) films and solutions are described and discussed. The photoluminescence-enhancing features include (i) a strong, {similar to}15-G-wide, asymmetric peak at {ital g}{congruent}2.003; (ii) a weak peak at {ital g}{congruent}4.07; and (iii) a weak, {similar to}800-G-wide structure around {ital g}{congruent}2. It is believed that feature (i) results from polaron recombination, and the others from the decay of two distinct intrinsic triplet polaronic excitons. The levels of all are apparently close to the band edges.

• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6380701
• Journal Information: Physical Review Letters; (USA), Vol. 65:9; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
DODECYL RADICALS
POLARONS
HEXYL RADICALS
ORGANIC POLYMERS
THIOPHENE
ASYMMETRY
EXCITONS
EXPERIMENTAL DATA
FILMS
LOW TEMPERATURE
MAGNETIC RESONANCE
PHOTOLUMINESCENCE
SOLUTIONS
TEMPERATURE DEPENDENCE
TRIPLETS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
ALKYL RADICALS
DATA
DISPERSIONS
HETEROCYCLIC COMPOUNDS
INFORMATION
LUMINESCENCE
MIXTURES
MULTIPLETS
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
POLYMERS
QUASI PARTICLES
RADICALS
RESONANCE
360603* - Materials- Properties