Influence of the structure disorder on the hole mobility in the tetracene layers

• Autorzy: Kania S. , Kondrasiuk J. , Wieczorek M.
• Konferencja: IX th International Seminar on Physics and Chemistry of Solids, ISPCS ‘03
• Języki publikacji: EN

Abstrakty

EN

The hole drift mobility measurements in the quasi - amorphous tetracene films were carried out, and for comparative purposes it was made revision for the hole investigations in the polycrystalline tetracene films. The quasi - amorphous tetracene layers were obtained with aid of vacuum evaporation technique. Tetracene was deposited en the glass substrates with the temperature 170 - 200 K in vacuum of the order of 10^-5 Torr. Whereas polycrystalline tetracene layers were obtained with use of the evaporation technique as well. Here, the tetracene was also deposited en the glass substrate( in the room temperature) in the vacuum of the order of 10^-5 Torr. The holes mobility was evaluated with the aid of the time - of - flight method. Obtained results suggest that we are with hopping transport throughout localized states near the Fermi level. Furthermore, in the slight manner, the studies demonstrate a little influence of the structure order en the holes mobility value, whereas it was not state the influence of the structure en the transport character for the holes in the tetracene films.

Słowa kluczowe

EN

polycrystalline tetracene films; quasi-amorphous tetracene layers; vacuum evaporation technique

PL

polikrystaliczne filmy tetracenowe; quasi-amorficzne warstwy tetracenu; technika odparowywania próżniowego

• Wydawca: Wydawnictwo Wyższej Szkoły Pedagogicznej w Częstochowie
• Czasopismo: Prace Naukowe. Chemia / Wyższa Szkoła Pedagogiczna w Częstochowie
• Rocznik: 2003
• Tom: Vol. 8
• Strony: 59--66
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Kania S.

• Institute of Physics, Technical University of Łódź, Wólczańska 219, 93-005, Łódź Poland

autor

Kondrasiuk J.

• Institute of Physics, Technical University of Łódź, Wólczańska 219, 93-005, Łódź Poland

autor

Wieczorek M.

• Institute of Chemistry and Environmental Protection, Pedagogical University, Armii Krajowej 13/15 av., 42-201, Częstochowa, Poland

Bibliografia

• [1] E.A. Silinsh, Organic Molecular Crystals, Springer-Verlag 1980.p.37.
• [2] S. Kania, W. Mycielski, A. Lipiński "Charge carrier transport in oriented p-quaterphenyl layers", Thin Solid Films, 61, 229 (1979).
• [3] A. Lipiński, W. Mycielski, J. Świątek, “Charge.carrier transport and D.C. conductivity in thin polycrystalline p - terphenyl films”, J. Chem. Solids 41, 455 (1980).
• [4] W. Mycielski, Evidence of hopping conduction among localised states in disordered systems of simple aromatic compounds”, J. Non-Crystalline Solids 37, 267 (1980).
• [5] S. Kania, J. Kondrasiuk, “charge carrier mobilities in the tetracene layers in presence of the oxygen molecules (O2) and water vapour (H2O)”, Scientific BulI. of Technical Univ. of Łódź 16, 43 (1996).
• [6] R. Zahlen The Physics of Amorphous Solids, 1983, John Wiley and Sons Inc.
• [7] N. F. Mott and E. A. Davies, Electronic Processes in Non-Crystalline Materials, Clarendon press, Oxford (1971).
• [8] S. Kania, J. Kondrasiuk, G. W. Bąk, “Influence of ambient atmosphere on charge transport in thin films of low - molecular weight organic compounds”, Molecular Phys. Reports, 25, 93, (1999).