Temperature and magnetic field influences on annihilation delayed fluorescence of aromatic molecules in Langmuir-Blodgett films

N. Kh Ibraev, K. M. Makhanov

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

The temperature influence on an annihilation delayed fluorescence of aromatic molecules in Langmuir-Blodgett films was investigated. It is shown that the efficiency of migration of triplet excitons depends on temperature owing to inhomogeneous broadening of energetic levels caused by local inhomogeneity of film structure. From experimental data the quantities of scattering of Anthracene, 1,2-Benzanthracene and Fluoranthene triplet levels were determined. The influence of external magnetic field on delayed fluorescence characteristics was studied. On an incipient stage of luminescence decay the magnetic effect replicates that of crystals. In the course of time magnetic field effect on intensity of delayed fluorescence decreases.

Original languageEnglish
Pages (from-to)25-31
Number of pages7
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume384
Issue numberPART I
DOIs
Publication statusPublished - 1 Dec 2002
Externally publishedYes
EventProceedings of the Fourth International Conference on Electronic Processes in Organic Materials - Lviv, Ukraine
Duration: 3 Jun 20028 Jun 2002

Fingerprint

Langmuir Blodgett films
Langmuir-Blodgett films
Temperature distribution
temperature distribution
Fluorescence
Magnetic fields
fluorescence
Molecules
magnetic fields
Magnetic field effects
molecules
magnetic effects
Anthracene
anthracene
Excitons
Luminescence
inhomogeneity
excitons
Scattering
luminescence

Keywords

  • Aromatic molecules
  • Delayed fluorescence
  • Langmuir-Blodgett film
  • Triplet-triplet annihilation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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abstract = "The temperature influence on an annihilation delayed fluorescence of aromatic molecules in Langmuir-Blodgett films was investigated. It is shown that the efficiency of migration of triplet excitons depends on temperature owing to inhomogeneous broadening of energetic levels caused by local inhomogeneity of film structure. From experimental data the quantities of scattering of Anthracene, 1,2-Benzanthracene and Fluoranthene triplet levels were determined. The influence of external magnetic field on delayed fluorescence characteristics was studied. On an incipient stage of luminescence decay the magnetic effect replicates that of crystals. In the course of time magnetic field effect on intensity of delayed fluorescence decreases.",
keywords = "Aromatic molecules, Delayed fluorescence, Langmuir-Blodgett film, Triplet-triplet annihilation",
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T1 - Temperature and magnetic field influences on annihilation delayed fluorescence of aromatic molecules in Langmuir-Blodgett films

AU - Ibraev, N. Kh

AU - Makhanov, K. M.

PY - 2002/12/1

Y1 - 2002/12/1

N2 - The temperature influence on an annihilation delayed fluorescence of aromatic molecules in Langmuir-Blodgett films was investigated. It is shown that the efficiency of migration of triplet excitons depends on temperature owing to inhomogeneous broadening of energetic levels caused by local inhomogeneity of film structure. From experimental data the quantities of scattering of Anthracene, 1,2-Benzanthracene and Fluoranthene triplet levels were determined. The influence of external magnetic field on delayed fluorescence characteristics was studied. On an incipient stage of luminescence decay the magnetic effect replicates that of crystals. In the course of time magnetic field effect on intensity of delayed fluorescence decreases.

AB - The temperature influence on an annihilation delayed fluorescence of aromatic molecules in Langmuir-Blodgett films was investigated. It is shown that the efficiency of migration of triplet excitons depends on temperature owing to inhomogeneous broadening of energetic levels caused by local inhomogeneity of film structure. From experimental data the quantities of scattering of Anthracene, 1,2-Benzanthracene and Fluoranthene triplet levels were determined. The influence of external magnetic field on delayed fluorescence characteristics was studied. On an incipient stage of luminescence decay the magnetic effect replicates that of crystals. In the course of time magnetic field effect on intensity of delayed fluorescence decreases.

KW - Aromatic molecules

KW - Delayed fluorescence

KW - Langmuir-Blodgett film

KW - Triplet-triplet annihilation

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U2 - 10.1080/10587250290112881

DO - 10.1080/10587250290112881

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VL - 384

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EP - 31

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SN - 1542-1406

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