• 제목/요약/키워드: Information and Materials

검색결과 7,286건 처리시간 0.042초

Study on the Stability of Organic Thin-Film Transistors Fabricated by Inserting a Polymeric Film as an Adhesion Layer

  • Hyung, Gun-Woo;Park, Il-Houng;Seo, Ji-Hoon;Seo, Ji-Hyun;Choi, Hak-Bum;Kim, Young-Kwan
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1348-1351
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    • 2007
  • We demonstrated that the threshold voltage shift owing to a gate-bias stress is originated from the trapped charges at the interface between semiconductor layer and dielectric layer, and such drawback can be settled by applying long-term delay time to the gate electrode.

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북한자료의 이용확대를 위한 협력모형 구축 방안 (A Study on Building Cooperation Model for the Public Availability of Materials and Information on North Korea)

  • 송승섭
    • 정보관리연구
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    • 제41권2호
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    • pp.71-93
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    • 2010
  • 본 연구에서는 먼저, 우리나라의 특수자료 취급현황을 파악하기 위하여 그 이론적 배경이 되는 '특수자료취급지침'의 변천과정을 고찰하고, 북한자료를 보유하고 있는 전국의 특수자료 취급기관 가운데 대표적인 감독부처인 통일부와 교육과학기술부 산하 특수자료취급기관의 특수자료 보유현황과 활용실적을 조사하였다. 다음, 분석 결과와 선행연구 조사를 통해 열악한 자료 이용 환경의 문제점을 찾아내고 제도적인 발전방안을 모색하였다. 특히 특수자료의 이용과 취급과정에서 일어날 수 있는 여러 가지 문제들을 조정, 통제할 수 있는 종합적인 관리 기구로써 '북한정보자료교류협의회'의 구성과 이를 통해 전국의 '특수자료취급기관'간 유기적인 협조를 이끌어 낼 수 있는 협력모형을 제안하였다.

Improved Efficiency of Organic Light-Emitting Diodes with Doped Transporting Layer

  • Seo, Ji-Hyun;Park, Jung-Hyun;Kim, Jun-Ho;Seo, Ji-Hoon;Hyung, Gun-Woo;Kim, Young-Kwan
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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    • pp.1464-1466
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    • 2007
  • We demonstrate p-doped organic light emitting diodes (OLEDs) comprising tungsten oxide ($WO_3$) and 1,4-bis[N-(1-naphthyl)-N'-phenylamino]-4,4' diamine (NPB). We propose the NPB : $WO_3$ composition functions as a p-doping layer which significantly improves hole injection that leads to the fabrication of 4-(dicyano-methylene)-2-methyl-6-(p-dimethylaminos tyryl)-4H-pyrane (DCMl) based p-doped OLEDs with high efficiency and long lifetime.

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인체유래물을 사용하는 연구와 Institutional Review Board 심의 (Research Using Human Biological Materials and Institutional Review Board Review)

  • 이미경
    • 대한기관윤리심의기구협의회지
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    • 제6권2호
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    • pp.33-37
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    • 2024
  • Recently, with the development of biotechnology and molecular genetics, research using human biological materials has been receiving attention, and the demand for the use of human- biological materials has also increased significantly. In particular, human biological materials contain the personal information of the person providing them, so special care must be taken to protect personal information throughout the entire process from drafting the human biological materials research plan, Institutional Review Board (IRB) review, and research progress. In addition, it is important to appropriately utilize residual human biological materials obtained during medical diagnosis and treatment at medical institutions to achieve scientific results, while protecting the rights of human biological materials providers and improving the method of expressing consent so as not to damage the trust of human biological materials providers in researchers. To this end, it is necessary to provide sufficient information and education so that researchers and IRB members can understand and apply related laws such as the Bioethics Act and the Personal Information Protection Act.

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Properties of Xe plasma flat fluorescent lamp by screen printing

  • Lee, Yang-Kyu;Kang, Jong-Hyun;Yoon, Seung-Il;Kim, Tae-Kwon;Bae, Sung-Jo;Oh, Myung-Hoon;Lee, Dong-Gu
    • 한국정보디스플레이학회:학술대회논문집
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    • 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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    • pp.1386-1389
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    • 2006
  • In this study, a plasma flat fluorescent lamp having a new structure was fabricated by screen printing technique. Coplanar types of silver electrodes with a dielectric layer were screen-printed on a rear glass plate, and then fired at $550^{\circ}C$ and $580^{\circ}C$, respectively. Phosphor was spin-coated on the dielectric layer with firing at $490^{\circ}C$. Several types of lamps were designed and its properties wee investigated with electrode shape, gas pressure, etc.

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On demand nanowire device decalcomania

  • Lee, Tae-Il;Choi, Ji-Hyuck;Moon, Kyung-Ju;Jeon, Joo-Hee;Myoung, Jae-Min
    • 한국재료학회:학술대회논문집
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    • 한국재료학회 2009년도 추계학술발표대회
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    • pp.26.1-26.1
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    • 2009
  • A simple route of external mechanical force is presented for enhancing the electrical properties of polymer nanocomposite consisted of nanowires. By dispersing ZnO nanowires in polymer solution and drop casting on substrates, nanocomposite transistors containing ZnO nanowires are successfully fabricated. Even though the ZnO nanowires density is properly controlled for device fabrication, as-cast device doesn't show any detectable currents, because nanowires are separated far from each other with the insulating polymer matrix intervening between them. Compared to the device pressed at 300 kPa, the device pressed at 600 kPa currents increased by 50times showing the linear behavior against drain voltage and exhibits promising electrical properties, which operates in the depletion mode with higher mobility and on-current. Such an improved device performance would be realized by the contacts improvement and the increase of the number of electrical path induced by external force. This approach provides a viable solution for serious contact resistance problem of nanocomposite materials and promises for future manufacturing of high-performance devices.

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Simultaneous regulation of photoabsorption and ferromagnetism of NaTaO3 by Fe doping

  • Yang, Huan;Zhang, Liguo;Yu, Lifang;Wang, Fang;Ma, Zhenzhen;Zhou, Jie;Xu, Xiaohong
    • Current Applied Physics
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    • 제18권11호
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    • pp.1422-1425
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    • 2018
  • $NaTa_{1-x}Fe_xO_3$ ($0{\leq}x{\leq}0.40$) nanocubes were synthesized by a relatively low temperature hydrothermal method, using $Ta_2O_5$, $FeCl_3$ and NaOH as the precursors. The UV-vis diffuse reflectance spectra showed that $NaTa_{1-x}Fe_xO_3$ had significant visible-light-absorbing capability, and the absorption edge of $NaTaO_3$ shifted to longer wavelength with the increase of Fe dopants. Moreover, $NaTa_{1-x}Fe_xO_3$ exhibited room-temperature ferromagnetism when $Fe^{3+}$ occupied $Ta^{5+}$ sites in $NaTaO_3$ crystal lattice. The ferromagnetism is mainly attributed to the superexchange interactions between doped $Fe^{3+}$, rather than the contribution of oxygen vacancies caused by Fe doping. Therefore, Fe doping can simultaneously regulate the optical and magnetic properties of $NaTaO_3$ semiconductor, which will enable its potential applications in multifunctional optical-electronics and opticalspintronics devices.