Structural Imperfections as Triplet Exciton Traps in Anthracene Crystals
作者： Kohei Yokoi , Yujiro Ohba
DOI: 10.1080/00268948608080206
关键词: Molecular physics 、 Crystallography 、 Anthracene 、 Dislocation 、 Chemistry 、 Plastic bending 、 Single crystal 、 Crystallographic defect 、 Trapping 、 Crystal 、 Activation energy
摘要: Abstract Structural imperfections were generated in anthracene single crystals at 93 K by plastic bending and thermal stress. The number of stages the triplet exciton traps anneal characteristics defects measured 93-423 then analyzed quantitatively. depth trap (0.37, 0.26 eV) activation energies for defect-recovery (1.34, 1.09 obtained ((001) [O1O] (001) [1OO]) edge dislocations, introduced along n b crystal axis, respectively. Each dislocation is accompanied one or two shallower traps. Thermal consisted all observed mechanically-deformed samples plus other annealed below room temperature.
sci-hub.se 参考文章(28)
R. Sonnenschein, K. Syassen, A. Otto, Effect of pressure on the first singlet exciton in crystalline anthracene Journal of Chemical Physics. ,vol. 74, pp. 4315- 4319 ,(1981) , 10.1063/1.441671
P. M. Robinson, H. G. Scott, Tilt Boundaries in Deformed Anthracene Single Crystals physica status solidi (b). ,vol. 20, pp. 461- 471 ,(1967) , 10.1002/PSSB.19670200207
S. Arnold, W. B. Whitten, A. C. Damask, Triplet exciton trapping by dislocations in anthracene Journal of Chemical Physics. ,vol. 53, pp. 2878- 2884 ,(1970) , 10.1063/1.1674414
John O. Williams, Donato Donati, John M. Thomas, Spectral evidence for the existence of green “incipient” dimers in single crystals of anthracene Journal of the Chemical Society, Faraday Transactions. ,vol. 73, pp. 1169- 1177 ,(1977) , 10.1039/F29777301169
Pieter E. Schipper, A Theory of Excitons in Strained Molecular Crystals Molecular Crystals and Liquid Crystals. ,vol. 28, pp. 401- 421 ,(1974) , 10.1080/15421407408082834
G. M. Crisp, S. H. Walmsley, Exciton Trap Depths in Orientationally Disordered Anthracene Crystals Molecular Crystals and Liquid Crystals. ,vol. 58, pp. 71- 76 ,(1980) , 10.1080/01406568008070151
Z. Zboiński, A Kinetic Model of Triplet Exciton Dynamics in Organic Crystals with Discrete Trapping Levels Physica Status Solidi B-basic Solid State Physics. ,vol. 87, pp. 663- 674 ,(1978) , 10.1002/PSSB.2220870232
John O. Williams, Zbigniew Zboiński, Structural imperfections and the delayed fluorescence of anthracene crystals Journal of the Chemical Society, Faraday Transactions. ,vol. 74, pp. 618- 629 ,(1978) , 10.1039/F29787400618
Juliusz Sworakowski, Structural Disorder as a Source of Traps for Current Carriers in Organic Molecular Crystals Molecular Crystals and Liquid Crystals. ,vol. 33, pp. 83- 89 ,(1976) , 10.1080/15421407608083873
Jiro Tanaka, Takao Koda, Shigeo Shionoya, Shigeru Minomura, The Effect of Pressure on the Fluorescence Spectra of Anthracene, Chrysene and Pyrene Bulletin of the Chemical Society of Japan. ,vol. 38, pp. 1559- 1560 ,(1965) , 10.1246/BCSJ.38.1559