Photogeneration and transport studies on differently polymerized n-vinylcarbazole polymers

✍ Scribed by G. Giro; P.G. Di Marco; E. Chiellini; R. Solaro

• Publisher: Elsevier Science
• Year: 1986
• Tongue: English
• Weight: 352 KB
• Volume: 22
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(86)90019-4

✦ Synopsis

Almtract--Photogeneration and transport studies were carried out on carefully purified, poly(Nvinylcarbazole) (PVK) samples prepared with different initiators. The results were compared both with those obtained from commercial samples and those reported in the literature. The experimental mobility values obtained [#] = [cm2/Vsec] were low compared with the "trap free" mobility value, recently reported = 10 3 cm2/Vsec). The presence of persistent impurities, formed during the polymerization procedure and bound to the polymer backbone, together with the presence of specific structural faults, could explain the rather low observed mobility values. The photoelectric yield for all the samples, except those prepared from EtAIC12 (PVK-IV), is about 3 x 10 3. The higher value shown by the PVK-IV samples (10 2) could be ascribed to a lower concentration of traps for excitons (viz the so-called "second excimer site").