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논문 기본 정보

자료유형
학술저널
저자정보
Munkhsaikhan Zumuukhorol (Chonbuk National University) Zagarzusem Khurelbaatar (Chonbuk National University) Jong-Hee Kim (Chonbuk National University) Kyu-Hwan Shim (Chonbuk National University) Sung-Nam Lee (Korea Polytechnic University) See-Jong Leem (Korea Polytechnic University) Chel-Jong Choi (Chonbuk National University)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.17 No.4
발행연도
2017.8
수록면
483 - 491 (9page)
DOI
10.5573/JSTS.2017.17.4.483

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The interdigitated germanium (Ge) metal-semiconductor-metal (MSM) photodetectors (PDs) with and without an SiO₂ anti-reflection (AR) layer was fabricated, and the effect of SiO₂ AR layer on their optoelectronic response properties were investigated in detail. The lowest reflectance of 15.6% at the wavelength of 1550 nm was obtained with a SiO₂ AR layer with a thickness of 260 nm, which was in a good agreement with theoretically calculated film thickness for minimizing the reflection of Ge surface. The Ge MSM PD with 260 nm-thick SiO₂ AR layer exhibited enhanced device performance with the maximum values of responsivity of 0.65 A/W, the quantum efficiency of 52.2%, and the detectivity of 2.49 × 10<SUP>9</SUP> cm Hz<SUP>0.5</SUP>W<SUP>-1</SUP> under the light illumination with a wavelength of 1550 nm. Moreover, timedependent switching analysis of Ge MSM PD with 260 nm- thick SiO₂ AR layer showed highest on/off ratio with excellent stability and reproducibility. All this investigation implies that 260 nm-thick SiO₂ AR layer, which is effective in the reduction in the reflection of Ge surface, has a great potential for Ge based optoelectronic devices.

목차

Abstract
I. INTRODUCTION
II. EXPERIMENT
III. RESULTS AND DISCUSSION
IV. CONCLUSIONS
REFERENCES

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