Optoelectronic Properties of Orientation-controlled Lead Phthalocyanine Films.
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- Mizoguchi Kohji
- Department of Applied Physics, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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- Mizui Keizo
- Department of Applied Physics, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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- Kim DaeGwi
- Department of Applied Physics, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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- Nakayama Masaaki
- Department of Applied Physics, Osaka City University, 3-3-138 Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
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Abstract
We investigated the optoelectronic properties of orientation-controlled lead phthalocyanine (PbPc) films on (0001) sapphire and (001) KCl substrates prepared by vacuum deposition. The results obtained from X-ray diffraction measurements indicate that the orientations of the molecular planes in the PbPc films on the sapphire and KCl substrates are perpendicular and parallel to the substrate surface, respectively. It is found from current-voltage characteristics under dark and illumination conditions that the in-plane conductivity of the PbPc film on the sapphire substrate is about 20 times as large as that on the KCl substrate. This finding indicates that the in-plane conductivity is dominated by the molecular-plane orientation, which is considered to be due to their one-dimensional conduction nature via Pb ions. Furthermore, we discuss the contribution of excitons to the photocarriers based on the results of the absorption and photocurrent spectra.
Journal
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 41 (11A), 6421-6425, 2002
The Japan Society of Applied Physics
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Details 詳細情報について
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- CRID
- 1390001206254658176
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- NII Article ID
- 210000052169
- 110006341957
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- NII Book ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL BIB ID
- 6358488
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed