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Triplet Exciton–Charge Carrier Interaction in Anthracene

✍ Scribed by E. L: Frankevich; I. A. Sokolik; L. V. Lukin

Book ID
104543720
Publisher
John Wiley and Sons
Year
1972
Tongue
English
Weight
286 KB
Volume
54
Category
Article
ISSN
0370-1972

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✦ Synopsis

Abstract

The delayed fluorescence (DF) quenching of anthracene crystals caused by hole injection is investigated. The kinetics of DF and DF quenching due to triplet‐hole interaction are measured over a wide range of light intensities when the triplet exciton decay converts from unimolecular to bimolecular. The values of photoenhanced space‐charge‐limited current have provided the ratio of free to trapped hole concentrations in crystal. The increased role of triplet‐free hole interaction at high light intensity is shown. The rate constants of triplet‐trapped hole ((0.6 ± 0.2) × 10^−11^ cm^3^ s^−1^) and of triplet‐free hole ((2 ± 1) × × 10^−10^ cm^3^ s^−1^) interactions leading to triplet quenching are measured.

📜 SIMILAR VOLUMES

Singlet exciton-charge carrier interacti
Singlet exciton-charge carrier interaction in anthracene
✍ N. Wakayama; D.F. Williams 📂 Article 📅 1971 🏛 Elsevier Science 🌐 English ⚖ 302 KB

The singlet exciton-charge carrier annihilation rate constant KS has been measured CLS Xi x 10-5cm3 set-1 for hoies and electrons. The mngnitude of Ks is discussed with respect to the magnitude of rhc electron-hole recombination rate constant.

Singlet exciton-trapped carrier interact
Singlet exciton-trapped carrier interaction in anthracene
✍ M. Pope; J. Burgos; N. Wotherspoon 📂 Article 📅 1971 🏛 Elsevier Science 🌐 English ⚖ 403 KB

Singlet excitons in anthracene crystal are annihilated by trapped hoIes near an Au hole-injecting electrode. The efficiency of detrappiny is about 1%. The singlet exciton fluorescence can be modulated by means of a varying external eIectric field.