Time Dependence of Optical Properties of Vacuum-Evaporated Poly(di-methyl silane) Thin Films
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Accession number;05A0303249
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| Title;Time Dependence of Optical Properties of Vacuum-Evaporated Poly(di-methyl silane) Thin Films |
| Author;
OHTA H
(Kyushu Inst. Of Technol., Fukuoka, Jpn)
TAKAMOTO T
(Kyushu Inst. Of Technol., Fukuoka, Jpn)
YASUDA T
(Kyushu Inst. Of Technol., Fukuoka, Jpn)
FURUKAWA S
(Kyushu Inst. Of Technol., Fukuoka, Jpn)
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Journal Title;Jpn J Appl Phys Part 1
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Journal Code:G0520B
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ISSN:0021-4922
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VOL.44;NO.1B;PAGE.556-560(2005)
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| Figure&Table&Reference;FIG.11, TBL.1, REF.13 |
| Pub. Country;Japan |
| Language;English |
| Abstract;In this paper, we show an interesting change in the optical properties of poly(di-methyl silane) thin films prepared by vacuum evaporation. We have found that the strength of the optical absorption peak at -300 nm is changed depending on the substrate temperature during the deposition. The strength of the optical absorption peak at -300 nm decreases with increasing time when the thin film is prepared at a high substrate temperature. On the other hand, the peak does not appear when the thin film is prepared at a low substrate temperature. However, in the latter case, the optical absorption peak appears at -300 nm with time. Moreover, the change of the optical absorption strength of the specimen held in a vacuum desiccator is different from that of the specimen held in atmosphere. It is considered that the decrease of the optical absorption strength at -300 nm is due to the decrease of the molecular weight of polysilanes, and the increase is due to the structural relaxation of polysilane chains. (author abst.) |
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