Investigation of inhomogeneous line broadening of ODMR transitions in doped organic glasses
โ Scribed by G. Gradl; J. Friedrich
- Publisher
- Elsevier Science
- Year
- 1985
- Tongue
- English
- Weight
- 343 KB
- Volume
- 114
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
We mves:igated the influence of mternal and external heavy-atom-induced spm-orbit coupling on the inhomogeneous broademng of ODMR tranutrons. From the very small heavy-atom effect observed, we conclude thr: the leadmg mechanism is not spin-orblt mteraction but an electrostatic coupling between probe molecule and solvent 1. Introducrion
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X simple mccbanbm for tbc broaicnin~ of optic~t and ODOR kmsitions ofgucst molccuks in botb Iatticcs is prorided. Xccording lo this mwIxmism the broadrning rcsuhs from the ~QII~~O!II spin-orbital intcmctions caused by electronic cncrgy fluctuations ~inh~mo~cnrous) in the sin;Ict and triplet st.Hrks.
The homogeneous optical dephasing times (T,) and the non-photochemical hole burning (NPHB) linewidths of resorutin in glycerol glass are reported from 1.1 to 25.5 K. At low temperature, the linewidths obtained from NPHB are substantially wider than the linewidths (l/x T2) obtained from photon echo m