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Volumn 46, Issue 45-49, 2007, Pages

Preparation and optical properties of aligned β-phase polyfluorene thin films

Author keywords

phase; Photoluminescence quantum efficiency; Polarized absorption; Polarized photoluminescence; Poly(9,9 dioctylfluorene) (F8)

Indexed keywords

ABSORPTION; CRYSTALLINE MATERIALS; LIGHT EMISSION; LIGHT EMITTING DIODES; LUMINESCENCE; OPTICAL MATERIALS; OPTICAL PROPERTIES; ORGANIC LIGHT EMITTING DIODES (OLED); PHOTOLUMINESCENCE; QUANTUM EFFICIENCY; SEMICONDUCTOR QUANTUM DOTS; SOLIDS; THICK FILMS; THIN FILMS; TOLUENE; VAPOR DEPOSITION;

EID: 47549091625     PISSN: 00214922     EISSN: 13474065     Source Type: Journal    
DOI: 10.1143/JJAP.46.L1093     Document Type: Article
Times cited : (13)

References (19)
  • 2
    • 0000787419 scopus 로고    scopus 로고
    • Y. Ohmori, M. Uchida, K. Muro, and K. Yoshino: Jpn. J. Appl. Phys. 30 (1991) L1941.
    • Y. Ohmori, M. Uchida, K. Muro, and K. Yoshino: Jpn. J. Appl. Phys. 30 (1991) L1941.
  • 16
    • 54249109429 scopus 로고    scopus 로고
    • Such an exciton migration from a donor segment with shorter conjugation length to an acceptor segment with longer conjugation length is very efficient when the transition dipole moment of the acceptor is parallel to that of the donor. Therefore, the diffusion process of excitons is anisotropic in aligned thin films. However, the anisotropy of steady-state PL shown in Fig. 2 is determined by the orientation of the segments with the lowest excited-state energy (the longest conjugation length, Anisotropy of the diffusion length of excitons may be measured by a steady-state photoconductivity method [M. Pope and C. E. Swenberg: Electronic Processes in Organic Crystals and Polymers Oxford University Press, New York, 1999
    • Such an exciton migration from a donor segment with shorter conjugation length to an acceptor segment with longer conjugation length is very efficient when the transition dipole moment of the acceptor is parallel to that of the donor. Therefore, the diffusion process of excitons is anisotropic in aligned thin films. However, the anisotropy of steady-state PL shown in Fig. 2 is determined by the orientation of the segments with the lowest excited-state energy (the longest conjugation length). Anisotropy of the diffusion length of excitons may be measured by a steady-state photoconductivity method [M. Pope and C. E. Swenberg: Electronic Processes in Organic Crystals and Polymers (Oxford University Press, New York, 1999)].
  • 19
    • 54249124535 scopus 로고    scopus 로고
    • A complete assignment of the diffraction peaks is required for better understanding of the in-plane structure of aligned β-phase F8 thin films. However, grazing incidence X-ray studies seem to be extremely difficult because the diffraction intensities from β-phase thin films are too weak to be detected
    • A complete assignment of the diffraction peaks is required for better understanding of the in-plane structure of aligned β-phase F8 thin films. However, grazing incidence X-ray studies seem to be extremely difficult because the diffraction intensities from β-phase thin films are too weak to be detected.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.