Time-dependent non-equilibrium exciton diffusion in an organic glass

R. Richert; B. Ries; H. Bässler

doi:10.1080/13642817408246506

Time-dependent non-equilibrium exciton diffusion in an organic glass

R. Richert, B. Ries, H. Bässler

Research output: Contribution to journal › Article › peer-review

41 Scopus citations

Abstract

Decay of donor phosphorescence is used as a sensor for time-dependent diffusion of triplet excitons in an amorphous organic solid (benzophenone) where diagonal disorder of the hopping sites prevails. The exciton jump rate is found to follow a t^α-1 law. Between 4·2 K and 100 K the dispersion parameter α increases from 0·25 to 0·55. The results are compared with computer simulations based on experimental data for the density-of-states distribution.

Original language	English (US)
Pages (from-to)	25-30
Number of pages	6
Journal	Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties
Volume	49
Issue number	3
DOIs	https://doi.org/10.1080/13642817408246506
State	Published - Mar 1984
Externally published	Yes

ASJC Scopus subject areas

General Chemical Engineering
General Physics and Astronomy

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10.1080/13642817408246506

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title = "Time-dependent non-equilibrium exciton diffusion in an organic glass",

abstract = "Decay of donor phosphorescence is used as a sensor for time-dependent diffusion of triplet excitons in an amorphous organic solid (benzophenone) where diagonal disorder of the hopping sites prevails. The exciton jump rate is found to follow a tα-1 law. Between 4·2 K and 100 K the dispersion parameter α increases from 0·25 to 0·55. The results are compared with computer simulations based on experimental data for the density-of-states distribution.",

author = "R. Richert and B. Ries and H. B{\"a}ssler",

note = "Funding Information: A clarifying discussion with B. Movaghar is gratefully acknowledged. Zone-refined benzophenone was kindly supplied by Professor N. Karl. This work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie.",

year = "1984",

month = mar,

doi = "10.1080/13642817408246506",

language = "English (US)",

volume = "49",

pages = "25--30",

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T1 - Time-dependent non-equilibrium exciton diffusion in an organic glass

AU - Richert, R.

AU - Ries, B.

AU - Bässler, H.

N1 - Funding Information: A clarifying discussion with B. Movaghar is gratefully acknowledged. Zone-refined benzophenone was kindly supplied by Professor N. Karl. This work was supported by the Deutsche Forschungsgemeinschaft and the Fonds der Chemischen Industrie.

PY - 1984/3

Y1 - 1984/3

N2 - Decay of donor phosphorescence is used as a sensor for time-dependent diffusion of triplet excitons in an amorphous organic solid (benzophenone) where diagonal disorder of the hopping sites prevails. The exciton jump rate is found to follow a tα-1 law. Between 4·2 K and 100 K the dispersion parameter α increases from 0·25 to 0·55. The results are compared with computer simulations based on experimental data for the density-of-states distribution.

AB - Decay of donor phosphorescence is used as a sensor for time-dependent diffusion of triplet excitons in an amorphous organic solid (benzophenone) where diagonal disorder of the hopping sites prevails. The exciton jump rate is found to follow a tα-1 law. Between 4·2 K and 100 K the dispersion parameter α increases from 0·25 to 0·55. The results are compared with computer simulations based on experimental data for the density-of-states distribution.

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JF - Philosophical Magazine B: Physics of Condensed Matter; Statistical Mechanics, Electronic, Optical and Magnetic Properties

IS - 3

ER -

Time-dependent non-equilibrium exciton diffusion in an organic glass

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