Study of charge carrier transport in organic semiconductors

The main goal of the present thesis is to analyze electronic and charge transport in organic\nsemiconductors samples with different polymer/sensitizer ration. The electronic and\ntransport properties of organic semiconductor samples based in three components: the holetransporting\npolymer matrix poly(N,N’-bis(4-hexyloxyphenyl)-N’-(4-(9-phenyl-9Hfluoren-\n9-yl)- phenyl)-4,4’-benzidine) (PFo6-TPD)/poly(N,N’-bis(4-hexyloxyphenyl)-N’-\n(4-(9-phenyl-9H-fluoren-9-yl)-phenyl)phenylen-1,4-diamine) (PFo6-PDA), the sensitizer\n[phenyl-C60-butyric acid methyl ester] (PCBM) [3], and the NLO chromophores 2,5-\ndimethyl-(4-p-nitrophenylazo) anisole and (DMNPAA) 3-methoxy-(4-p-nitrophenylazo)-\nanisole (MNPAA) has been measured.\nSamples with a thickness of 8µm and 0.25 cm2 front/back area were prepared by\nsandwiching the material between two glasses covered by the transparent indium tin oxide\n(ITO) electrodes.