Photoluminescence characterization of vacuum deposited PTCDA thin films

• Autorzy: Bała W. , Łukasiak Z. , Rębarz M. , Dalasiński P. , Bratkowski A. , Bauman D. , Hertmanowski R.
• Konferencja: International Conference on Solid State Crystals : Material Science and Applications (4ICSSC) and Polish Conference on Crystal Growth (7PCCG) ; (16-20.05.2004 ; Zakopane-Kościelisko, Poland)
• Języki publikacji: EN

Abstrakty

EN

We investigated photoluminescence (PL) under steady state excitation and photoluminescence excitation (PLE) spectra of thin 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) films deposited on (001)Si substrate with various layer thicknesses grown at different substrate temperatures. The PL and PLE spectra have been measured at various temperatures, ranging from 10 K to 325 K. The PTCDA films exhibit strong luminescence at all mentioned ranges of temperature and for different values of excitation energy. The vibronic structure of PL spectra is clearly resolved at different temperatures. The position of peaks on energy scale depends on the temperature. We have observed a blue-shift of peaks with the decrease in the temperature. In all the investigated samples, the thermal quenching of PL has been observed. Analysis of the temperature dependence of the intensity bands, their position and full width half maximum (FWHM) allowed to find the energy barriers between the excited state and defect state. We propose a schematic potential energy diagram which explains mechanism of PL recombination

Słowa kluczowe

EN

PTCDA; photoluminescence; excitons

• Wydawca: Stowarzyszenie Elektryków Polskich ; Polska Akademia Nauk ; Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
• Czasopismo: Opto-Electronics Review
• Rocznik: 2004
• Tom: Vol. 12, No. 4
• Strony: 445--448
• Opis fizyczny: Bibliogr. 11 poz.

Twórcy

autor

Bała W.

• Institute of Physics, N. Copernicus University, 5/7 Grudziądzka Str., 87-100 Toruń, Poland

autor

Łukasiak Z.

• Institute of Physics, N. Copernicus University, 5/7 Grudziądzka Str., 87-100 Toruń, Poland

autor

Rębarz M.

• Institute of Physics, N. Copernicus University, 5/7 Grudziądzka Str., 87-100 Toruń, Poland

autor

Dalasiński P.

• Institute of Physics, N. Copernicus University, 5/7 Grudziądzka Str., 87-100 Toruń, Poland

autor

Bratkowski A.

• Institute of Physics, N. Copernicus University, 5/7 Grudziądzka Str., 87-100 Toruń, Poland

autor

Bauman D.

• Faculty of Technical Physics, Poznań University of Technology, 13A Nieszawska Str., 60-965 Poznań, Poland

autor

Hertmanowski R.

• Faculty of Technical Physics, Poznań University of Technology, 13A Nieszawska Str., 60-965 Poznań, Poland

Bibliografia

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