Estimation of Non-Radiative Transition Rate in Tetracene-Doped Anthracene by Photoacoustic Spectroscopy
- 1 May 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (5R) , 835-838
- https://doi.org/10.1143/jjap.27.835
Abstract
In order to investigate the impurity effect on non-radiative transition, we measured photoluminescence (PL), photoluminescence excitation (PLE) and photoacoustic (PA) spectra of tetracene-doped anthracene molecular crystals. We considered three radiative and non-radiative transitions to set up rate equations; from the anthracene exciton band to the ground state, from the anthracene exciton band to the tetracene impurity level and from the tetracene impurity level to the ground state. It was clarified from the results that the luminescence quantum efficiency due to anthracene decreases with increasing impurity concentration. Decrease of the quantum efficiency was discussed in terms of the change in transition matrix element.Keywords
This publication has 7 references indexed in Scilit:
- Photoacoustic and Luminescence Spectra of CdS Fine ParticlesJapanese Journal of Applied Physics, 1987
- Nonradiative capture and recombination by multiphonon emission in GaAs and GaPPhysical Review B, 1977
- Non-radiative transitionsPhilosophical Magazine, 1976
- Singlet exciton energy transfer in organic solidsJournal of Luminescence, 1975
- The energy gap law for radiationless transitions in large moleculesMolecular Physics, 1970
- Application of the Method of Generating Function to Radiative and Non-Radiative Transitions of a Trapped Electron in a CrystalProgress of Theoretical Physics, 1955
- Theory of light absorption and non-radiative transitions in F -centresProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1950