caa a22 4500 463234278 CHVBK 20180405153251.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10853-006-1242-x doi (NATIONALLICENCE)springer-10.1007/s10853-006-1242-x Photoconductivity of n-type semiconductor nanoparticle-doped poly(N-vinylcarbazole) films [Elektronische Daten] [Tadahiro Aita, Kosuke Iha, Liu Hui, Takeshi Higuchi, Shimio Sato] TiO2, CdS and ZnS nanoparticles that disperse stably in organic solvents are synthesized. Poly(N-vinylcarbazole) films doped with the n-type semiconductor nanoparticles are prepared with a cast method. The films exhibit a transient photocurrent when irradiated by a light pulse and act such as a diode when AC voltage is applied under continuous illumination. The transient photocurrent response and diode-like properties are significantly different depending on the kind of the nanoparticles and their amounts. The films doped with TiO2 and CdS nanoparticles increase the transient photocurrent at lower doped amounts, which is remarkable for TiO2-doped films. Time of flight analysis of the transient photocurrent shows that mobility of hole in PVK increases with increase in the amount of CdS and TiO2. From the studies on the diode-like properties, the current increase at lower dopant concentration is concluded to be due to increase in the amount of holes by an electron transfer from PVK to the photo-excited nanoparticles. At higher doping with CdS nanoparticles, main charge carrier of the films is found to change from holes to electrons. Springer Science+Business Media, LLC, 2007 Aita Tadahiro Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut Iha Kosuke Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut Hui Liu Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut Higuchi Takeshi Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut Sato Shimio Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6279-6286 0022-2461 42:15<6279 2007 42 10853 https://doi.org/10.1007/s10853-006-1242-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-1242-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aita Tadahiro Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut NATIONALLICENCE 700 1- Iha Kosuke Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut NATIONALLICENCE 700 1- Hui Liu Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut NATIONALLICENCE 700 1- Higuchi Takeshi Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut NATIONALLICENCE 700 1- Sato Shimio Department of Materials Science and Engineering, Yamagata University, 4-3-16 Yonezawa, 992-8510, Yamagata, Japan aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/15(2007-08-01), 6279-6286 0022-2461 42:15<6279 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer