Research on Photoconductivity of Polymers under High Pressure

高压下聚合物光电导性研究

• 批准号: 60550631
• 负责人: MATSUSHIGE Kazumi
• 金额: $ 1.34万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-60550631/
• 关键词: Photoconductivity; Photoabsorbance; High Pressure; Polyvinylcarbazole; Polycarbonate; Time-of-Flight; Carrier; Induced Charge

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.

在350 MPa下对两种聚合物材料进行了光导和光吸收测量；掺杂吡唑啉（PC/Py）薄膜的聚碳酸酯和聚（n -乙烯基咔唑）/三硝基芴酮（PVK-TNF）的电荷转移配合物。在这两种情况下，孔洞的漂移迁移率都随着压力的增加而下降，这否定了通过施加压力减少分子间距离会导致漂移迁移率增加的简单推测。并提出分子链的迁移率起作用。在光导过程中起一定作用。在更高的压力区域。然而。漂移率表现出正压力依赖的趋势。另一方面，诱导电荷总量的压力依赖性随着压力的增加而增加，这表明施加压力增加了光生载体的量子产率和/或降低了输运空穴的阱能级。此外。高压光吸收测量表明，PVK-TNF样品在施加0.0002 eV/MPa的压力时，吸收边向能量较低的方向移动。

项目成果

S. Tsubakihara, S. Shichijyo, S. Taki, A. Hirano, K. Matsushige, S. Saito, and T. Takemura: "Effect of Pressure on Photoconductivity in Polycarbonate Film Doped with Pyrazolines" Rept. Progr. Polym. Phys. Jpn.28. 431-432 (1985)

S. Tsubakihara、S. Shichijyo、S. Taki、A. Hirano、K. Matsushige、S. Saito 和 T. Takemura：“压力对掺杂吡唑啉的聚碳酸酯薄膜光电导性的影响”Rept。

S.Tsubakihara;S.Shichijyo;S.Taki;K.Matsushige;T.Takemura: Jpn.J.Appl.Phys.25. 1614-1615 (1986)

S.Tsubakihara；S.Shichijyo；S.Taki；K.Matsushige；T.Takemura：Jpn.J.Appl.Phys.25。

S. Tsubakihara, S. Shichijyo, S. Taki, K. Matsushige, and T. Takemura: "Effect of Pressure on the Charge-Transfer Complexs of Trinitrofluorenone and Poly-N-Vinylcarbazole" Rept. Progr. Polym. Phys. Jpn.29. 457-458 (1986)

S. Tsubakihara、S. Shichijyo、S. Taki、K. Matsushige 和 T. Takemura：“压力对三硝基芴酮和聚-N-乙烯基咔唑的电荷转移复合物的影响”Rept。

S.Tsubakihara;S.Shichijyo;S.Taki;K.Matsushige;T.Takemura: Rept.Progr.Polym.Phys.Jpn. 29. 457-458 (1986)

S.Tsubakihara；S.Shichijyo；S.Taki；K.Matsushige；T.Takemura：Rept.Progr.Polym.Phys.Jpn。

Y.Watanabe;S.Shichijyo;K.Matsushige: Rept.Progr.Polym.Phys.Jpn.

Y.Watanabe；S.Shichijyo；K.Matsushige：Rept.Progr.Polym.Phys.Jpn。