https://doi.org/10.1140/epjb/e2003-00206-4
Photoconductivity detected magnetic resonance (PDMR) in crystalline tetracene
1
Faculté des Sciences de Tunis, Laboratoire de Physique de la Matière Condensée,
Campus universitaire, Tunis 1002, Tunisia
2
Département de physique, Faculté des Sciences de Bizerte, 7021 Jarzouna, Bizerte, Tunisia
3
École Supérieure des Sciences et Techniques de
Tunis, Tunisia
Corresponding author: a tarek.barhoumi@webmails.com
Received:
17
September
2002
Revised:
6
March
2003
Published online:
4
August
2003
A detailed experimental study of the modulation by a high power microwave of induced exciton photoconductivity in crystalline tetracene is presented. These experiments, so called PDMR (Photoconductivity Detected Magnetic Resonance) are supported by a theoretical model based on a matrix density formalism and taking into account the fission of singlet excitons, dimensionality of triplet excitons motions and singlet and triplet detrapping of charge carriers. The best agreement between the observed PDMR lines and calculated curves allows the determination of the pertinent parameters governing the different process involved in the description of the photoconductivity mechanism.
PACS: 72.20.Jv – Charge carriers: generation, recombination, lifetime, and trapping / 71.35.Aa – Frenkel excitons and self-trapped excitons / 76.70. Hb – Optically detected magnetic resonance (ODMR)
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2003
