1986 Fiscal Year Final Research Report Summary
Research on Photoconductivity of Polymers under High Pressure
| Project/Area Number |
60550631
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
高分子物性
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| Research Institution | Kyushu University |
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Principal Investigator |
MATSUSHIGE Kazumi Faculty of Engineering, Kyushu University, 工学部, 助教授 (80091362)
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| Co-Investigator(Kenkyū-buntansha) |
FUKAO Kouji Faculty of Engineering, Kyushu University, 工学部(昭61年度のみ), 助手 (50189908)
SHICHIJYO Shiro Faculty of Engineering, Kyushu University, 工学部, 助手 (60150489)
TAKEMURA Tetuo Formerly Kyushu University and presently Ariake National College of Technology, 工学部(現在)有明高専(昭60年度のみ), 名誉教授 校長 (10037658)
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| Project Period (FY) |
1985 – 1986
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| Keywords | Photoconductivity / Photoabsorbance / High Pressure / Polyvinylcarbazole / Polycarbonate / Time-of-Flight / Carrier / Induced Charge |
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| Research Abstract |
Photoconductive and photoabsorbance measurements were conducted up to 350 MPa for two kinds of polymeric materials; polycarbonate doped with pyrazoline (PC/Py) films and a charge transfer complex of poly(N-vinylcarbazole)/ trinitrofluorenone (PVK-TNF). In both cases, the drift mobility for holes revealed a decrease with increasing pressure, which deny the simple speculation that the reduction of intermolecular distance by the application of pressure would result in the increase in the drift mobility. and suggest that the mobility of molecular chains plays. some role in the photoconductive process. At much higher pressure region. however. the drift mobility showed the tendency of a positive pressure dependency. On the other hand, the pressure dependence of the total amount of induced charge showed an increase with increasing pressure, suggesting that the increase in the quantam yield for the photogeneration carries and/or the lowering in the trap energy level for the transporting holes by the application of pressure. Furthermore. a high-pressure photoabsorbance measurements showed that the absorption edge shifts toward lower energy upon the application of pressure with a rate of 0.0002 eV/MPa in PVK-TNF specimen.
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Research Products
(10 results)
