Thermally stimulated current investigation of copper octaethylporphyrin dimer Langmuir-Blodgett films.
Langmuir-Blodgett films containing meso,meso'-buta-1,3-diyne-bridge Cu(II) octaethylporphyrin dimer have been deposited with the aim of carrying out a thermally stimulated current (TSC) investigation. This characterization was obtained upon cooling samples irradiated by light and others without irradiation: in this way TSC curves have been registered in the temperature range of 100-300 K. Analysis of experimental data has been performed through the application of three different approaches: the initial rate, the heating rate, and Chen's methods. In particular, a trap center at about 0.38 eV has been evidenced and the three different methods have given results in close accordance.
Serra
Antonio
A
Laboratorio di Fisica Applicata, Dipartimento di Scienza dei Materiali, Università degli Studi di Lecce and INFM UdR Lecce F1, Via Arnesano, I-73100 Lecce, Italy.
Siciliano
Tiziana
T
Filippo
Emanuela
E
Micocci
Gioacchino
G
Tepore
Antonio
A
Arnold
Dennis P
DP
Valli
Ludovico
L