- Tytuł:
- Charge Carrier Transport in Non-Homogeneous MDMO-PPV Polymer
- Autorzy:
-
Kažukauskas, V.
Pranaitis, M.
Janonis, V. - Powiązania:
- https://bibliotekanauki.pl/articles/1505467.pdf
- Data publikacji:
- 2011-02
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
73.20.Hb
73.50.Gr
73.50.Pz
73.61.Ph - Opis:
- By thermally stimulated currents we have investigated carrier transport and trapping in [poly-(2-methoxyl, 5-(3,77dimethyloctyloxy)] paraphenylenevinylene (MDMO-PPV). To assure selective excitation of the defect states the spectral width of the exciting light was varied from 1.77 eV up to 3.1 eV. The thermally stimulated current curves were shown to be a superposition of carrier generation from trapping states and thermally stimulated mobility growth. The extrinsic excitation resulted in 0.16 eV photoconductivity effective activation energy values, which decreased down to 0.05 eV for the intrinsic excitation. The deeper states with activation energies of 0.28-0.3 eV and 0.8-0.85 eV were identified, too. The results are direct indication of distributed in energy trapping and transport states with the standard deviation of the density of states of about 0.015 eV.
- Źródło:
-
Acta Physica Polonica A; 2011, 119, 2; 128-130
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł