• Title/Summary/Keyword: Polycrystalline silicon

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Fabrication and characteristics of low temperature poly-Si thin film transistor using Polymer Substrates (저온에서 제작된 고분자 기판 위의 poly-si TFT 제조 및 특성)

  • Kang, Soo-Hee;Kim, Yong-Hoon;Han, Jin-Woo;Seo, Dae-Shik;Han, Jeong-In
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2006.04a
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    • pp.62-63
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    • 2006
  • In this paper, the characteristics of polycrystalline silicon thin-film transistors (poly-Si TFTs) fabricated on polymer substrates are investigated. The a-Si films was laser annealed by using a XeCl excimer laser and a four-mask-processed poly-Si TFT was fabricated with fully self-aligned top gate structure. The fabricated nMOS TFT showed field-effect mobility of $30cm2/V{\cdot}s$, on/off ratio of 105 and threshold voltage of 5 V.

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Degradation of Polycrystalline Silicon Thin Film Transistor by Inducing Stress (스트레스 인가에 의한 다결정 실리콘 박막 트랜지스터의 열화 특성)

  • 백도현;이용재
    • Proceedings of the IEEK Conference
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    • 2000.06b
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    • pp.322-325
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    • 2000
  • N-channel poly-Si TFT, Processed by Solid Phase Crystalline(SPC) on a glass substrate, has been investigated by measuring its electrical properties before and after electrical stressing. It is observed that the threshold voltage shift due to electrical stress varies with various stress conditions. Threshold voltages measured in 1.5$\mu\textrm{m}$ and 3$\mu\textrm{m}$ poly-Si TFTs are 3.3V, 3.V respectively. With the threshold voltage shia the degradation of transconductance(G$\_$m/) and subthreshold swing(S) is also observed.

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Fabrication and Characteristics of $N^+-P/P^+$ Polycrystalline Silicon Solar Cell ($N^+-P/P^+$ 다결정 실리콘 태양 전지의 제작 및 특성)

  • 정호선
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.19 no.5
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    • pp.38-42
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    • 1982
  • N+-P/P+solar cells were fabricated by using the polycrystalline silline wafer with the resistivity of 3-6 ohm-cm. minority carrier lifetimes, measured by Nd: YAG laser, were from 100ns up to 150ns. Conversion efficiency measured under AM 1 irradiation, were about 4%.

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Microstructural study of polycrystalline films prepared by Ni vapor induced crystallization

  • Ahn, Kyung-Min;Lee, Kye-Ung;Ahn, Byung-Tae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.715-717
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    • 2006
  • $NiCl_2$ vapor was introduced into conventional furnace to conduct vapor-induced crystallization (VIC) process. We made the metal chloride atmosphere by sublimating the $NiCl_2$ compound. The $NiCl_2$ atmosphere enhanced the crystallization of amorphous silicon thin films. As the result, polycrystalline Si film with large grain size and low metal contamination has been obtained.

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Formation of Buffer Layer on Mica for Application to Flexible Thin Film Transistors

  • Oh, Joon-Seok;Lee, Seung-Ryul;Lee, Jin-Ho;Ahn, Byung-Tae
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.749-751
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    • 2007
  • A buffer layer consisting of $SiO_x/Ta/Ti$ has been developed in order to overcome the adhesion and stress problems between poly-Si film and mica. Polycrystalline silicon thin film transistor was successfully fabricated on the mica and transferred to a flexible plastic substrate.

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Neural Interface with a Silicon Neural Probe in the Advancement of Microtechnology

  • Oh, Seung-Jae;Song, Jong-Keun;Kim, Sung-June
    • Biotechnology and Bioprocess Engineering:BBE
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    • v.8 no.4
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    • pp.252-256
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    • 2003
  • In this paper we describe the status of a silicon-based microelectrode for neural recording and an advanced neural interface. We have developed a silicon neural probe, using a combination of plasma and wet etching techniques. This process enables the probe thickness to be controlled precisely. To enhance the CMOS compatibility in the fabrication process, we investigated the feasibility of the site material of the doped polycrystalline silicon with small grains of around 50 nm in size. This silicon electrode demonstrated a favorable performance with respect to impedance spectra, surface topography and acute neural recording. These results showed that the silicon neural probe can be used as an advanced microelectrode for neurological applications.