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Triplet excitons in (TEA) (TCNQ)2

✍ Scribed by S. Flandrois; J. Amiell; F. Carmona; P. Delhaes


Book ID
103377031
Publisher
Elsevier Science
Year
1975
Tongue
English
Weight
339 KB
Volume
17
Category
Article
ISSN
0038-1098

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The dipolar split lines in the ESR spectra of some TCNQ salts are investigated. It is shown that the electronelectron correlation does not estend appreciably beyond a unit cell along the TCNQ chain. it is suggested that the &polar split lines are due to excitons formed from electrons and holes in P

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✍ E.L. Frankevich; A.N. Chaban; M.M. Triebel; J.U. von SchΓΌtz; H.C. Wolf πŸ“‚ Article πŸ“… 1991 πŸ› Elsevier Science 🌐 English βš– 364 KB

Using magnetic field effect measurements ofthe fluorescence of oriented phenazine-TCNQ (Ph/TCNQ) and fluorene-TCNQ (F/TCNQ) crystals as a function of excitation power and temperature. we were able to reveal the singlet depletion path St (T+T) which is thermally activated: for F/TCNQ with AE= 3226 cm

Infrared studies of the phase transition
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Polarised infrared and optical spectra were measured at temperatures between 5 and 300 K to study the 210 K structural phase transition in the organic charge transfer salt TEA(TCNQ),. At high temperatures, characteristic spectral features of semiconducting 1 : 2 TCNQ salts are observed. At low tempe