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논문 기본 정보

자료유형
학술대회자료
저자정보
Tohru Iuchi (Toyo University) Ryo Shinagawa (Toyo University)
저널정보
제어로봇시스템학회 제어로봇시스템학회 국제학술대회 논문집 ICCAS 2008
발행연도
2008.10
수록면
941 - 945 (5page)

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The temperature dependence on transmittance of a silicon wafer is well known, which is caused by various absorption mechanisms over wide range of spectrum. As the wavelength increases, the photon energy decreases until it becomes smaller than the minimum energy gap in the silicon band structure. At this point there is a rapid drop in absorption, which is often referred to as absorption edge wavelength. The absorption edge shifts to a longer wavelength with increasing temperature because the band gap reduces with increasing temperature. Experiments were carried out from the viewpoints of wavelength (900 ~1700 nm), polarization (p- and s-polarized) and direction (normal to 80º) for specimens with different resistivity (0.01 ~ 2700 Ωcm). A characteristic curve between absorption edge wavelength and temperature is obtained for all of silicon wafers with different resistivity. The results show that this method is promising for in situ temperature measurements of silicon wafers from room to 1000 K at a wavelength where the wafers are semitransparent. In this paper, an experimental apparatus, measurement results and considerations on advantages and disadvantages of this method are described in detail.

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Abstract
1. INTRODUCTION
2. EXPERIMENTAL APPARATUS
3. EXPERIMENTS
4. CONCLUSIONS
Acknowledgements
REFERENCES

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