Nonradiative Investigation of Photodecomposition of Poly(di-$n$-hexylsilane) Thin Films Using Piezoelectric Photothermal Spectroscopy
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概要
- 論文の詳細を見る
To investigate the photodecomposition mechanism of poly(di-$n$-hexylsilane) (PDHS), the ultraviolet (UV) light irradiation time dependence of the optical absorption (OA) and the piezoelectric photothermal (PPT) signals were measured in vacuum. A strong OA peak at 370 nm and a broad OA band at approximately 320 nm related to the all-trans and helical conformations, respectively, were observed. With increasing UV light irradiation time, their intensities decreased and blue shifts were observed because of the decomposition of Si–Si bonds in the silicon backbone. In the PPT spectrum, a nonradiative recombination peak associated with the all-trans conformation was also observed at 370 nm. When UV light irradiated the sample, in addition to the decrease in the intensity and the blue shift of the PPT peak at 370 nm, new PPT signals at approximately 290 nm were observed. We concluded that these signals were caused by the silicon and/or carbon dangling bonds generated by photodecomposition in vacuum.
- 2009-07-25
著者
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Ikari Tetsuo
Faculty Of Engineering Miyazaki University
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Furukawa Shoji
Graduate School Of Computer Science And Systems Engineering Kyushu Institute Of Technology
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Fukuyama Atsuhiko
Faculty Of Engineering Miyazaki University
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Furukawa Shoji
Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka 820-8502, Japan
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Kuroki Takahiro
Faculty of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan
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Sakai Kentaro
Cooperative Research Center, University of Miyazaki, Miyazaki 889-2192, Japan
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Iwamoto Tomohisa
Graduate School of Computer Science and Systems Engineering, Kyushu Institute of Technology, Fukuoka 820-8502, Japan
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Fukuyama Atsuhiko
Faculity of Engineering, University of Miyazaki, Miyazaki 889-2192, Japan
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