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), Journal Name: Physical Review Letters; (USA) Vol. 65:9; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

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