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La이 혼입된 고유전체/메탈 게이트가 적용된 나노 스케일 NMOSFET에서의 PBTI 신뢰성의 특성 분석
권혁민,한인식,박상욱,복정득,정의정,곽호영,권성규,장재형,고성용,이원묵,이희덕,Kwon, Hyuk-Min,Han, In-Shik,Park, Sang-Uk,Bok, Jung-Deuk,Jung, Yi-Jung,Kwak, Ho-Young,Kwon, Sung-Kyu,Jang, Jae-Hyung,Go, Sung-Yong,Lee, Weon-Mook,Lee, Hi-De 한국전기전자재료학회 2011 전기전자재료학회논문지 Vol.24 No.3
In this paper, PBTI characteristics of NMOSFETs with La incorporated HfSiON and HfON are compared in detail. The charge trapping model shows that threshold voltage shift (${\Delta}V_{\mathrm{T}}$) of NMOSFETs with HfLaON is greater than that of HfLaSiON. PBTI lifetime of HfLaSiON is also greater than that of HfLaON by about 2~3 orders of magnitude. Therefore, high charge trapping rate of HfLaON can be explained by higher trap density than HfLaSiON. The different de-trapping behavior under recovery stress can be explained by the stable energy for U-trap model, which is related to trap energy level at zero electric field in high-k dielectric. The trap energy level of two devices at zero electric field, which is extracted using Frenkel-poole emission model, is 1,658 eV for HfLaSiON and 1,730 eV for HfLaON, respectively. Moreover, the optical phonon energy of HfLaON extracted from the thermally activated gate current is greater than that of HfLaSiON.
Lanthanum이 혼입된 고유전 게이트 산화막에서의 온도에 따른 캐리어 이동 특성
권혁민(Hyuk-Min Kwon),최원호(Won-Ho Choi),한인식(In-Shik Han),구태규(Tae-Gyu Goo),나민기(Min-Ki Na),유욱상(Ook-Sang Yoo),이가원(Ga-Won Lee),이희덕(Hi-Deok Lee) 대한전자공학회 2007 대한전자공학회 학술대회 Vol.2007 No.11
In this paper, we analyzed the mechanisms of gate leakage current for high performance MOSFETs with La-incorporated hafnium oxide. Barrier height and trap energy level are extracted using different temperature. The barrier height (1.115eV) of Schottky emission was similar to previously reported value and the trap energy level (1.133eV) of Frenkel-Poole emission was slightly low than reported value, which may be due to the La-incorporation.
제트팬 노즐 형상 변화에 따른 기류 및 전력 사용량 특성비교
권혁민(Kwon, Hyuk-Min),김금희(Kim, Geum-Hee),박제규(Park, Jea-Kyu),양정훈(Yang, Jeong-Hoon) 대한건축학회 2016 대한건축학회논문집 Vol.32 No.8
Recently, residents living in high-density residential zones have been ever increasing, with floor area ratios growing higher following the industrial development and the enhancement of our living standards. Consequently, there is an insufficient number parking spaces. In order to solve the lack of parking spaces an increasing number of underground parking lots are being constructed. Nowadays, jet fan ventilation systems utilizing the airflow induced by jet fans are being widely used for the ventilation of large areas such as underground parking lots and tunnels. The purpose of this actual study is to present a jet fan that is designed to reduce electric power consumption and carbon dioxide emissions through the enhancement of its performance. The airflow characteristics of a jet fan that is widely used for the ventilation of underground parking lots and large spaces were realized during the experiments performed in this study. In order to enhance the performance of the existing jet fan, alternative cases were fabricated and their airflow characteristics, etc. were measured. In addition, the power consumption for each case was also measured, thereby predicting the correct amount of carbon dioxide (CO2) emissions. Case 1 (inside guide type) presented as an alternative for the basic case was found to be the most superior type. It was considered to be more effective when reducing the power consumption and carbon dioxide emissions by approximately 30% in comparison to the basic case. It is thought that a better performance than that of an existing jet fan can be realized by simply replacing its nozzle part with a new one..
권혁민(Kwon Hyuk-Min),정석환(Jeong Seok-Hwan),강주원(Kang Joo-Won),양정훈(Yang Jeong-Hoon) 한국태양에너지학회 2014 한국태양에너지학회 논문집 Vol.34 No.5
A plant factory system is getting the spotlight as alternatives to cope with the weather anomaly and food crisis because of the global warming. A study on "Plant Processing Factory System" has been proceeded to develope "low-carbon green growth" since our government selected it as the green technologies in 2010. The plant factory has played a major role in growth industries connected to many other fields like low-carbon as well as lighting and automated system. This study is aimed to solve the problems on low productivity and health problem of plant workers caused by highly concentrated carbon dioxide and low temperature in each process in the plant factory. It is aimed to research data to understand the actual conditions of plant workers and improve the thermal environment.
태양광 패널 이용 및 안정도 판별에 기반한 가변 전압 DC-DC 플라이백 컨버터의 설계
권혁민(Hyuk-Min Kwon),이재원(Jae-Won Lee),최종용(Jong-Yong Choi),손진근(Jin-Geun Shon) 대한전기학회 2021 대한전기학회 학술대회 논문집 Vol.2021 No.11
본 논문은 태양광 패널을 이용한 가변 전압 DC-DC 플라이백 컨버터를 설계한다. 일사량에 따라 출력 전압, 전류가 가변하는 태양광 패널은 사용자의 전자기기의 정격에 맞는 전압과 전류로 변환해 줄 필요가 있다. 이에 따라 태양광 패널을 전원으로 이용한 DC-DC 플라이백 컨버터를 사용하였으며 PI제어기를 통해 전압과 전류에도 사용자가 원하는 정격 출력을 안정하게 얻을 수 있도록 하였다. PSIM과 MATLAB을 통해 모의실험을 진행하였으며 설계 범위 내에서의 다양한 전압 레퍼런스 값에서도 원하는 안정적인 전압값이 출력되는 것을 확인할 수 있었다. 따라서, 전자기기가 대중화된 현대사회에서 태양광 패널을 통해 사용자가 원하는 출력을 실생활에서 적용한다면 안정적인 전압공급을 할 수 있을 것으로 판단된다.
권혁민(Hyuk-Min Kwon),김현기(Hyen-Ki Kim) 한국정보기술학회 2007 Proceedings of KIIT Conference Vol.2007 No.-
본 논문에서는 미디어 콘텐츠의 수요증대에 따라 영상 콘텐츠의 제작 및 편집을 위한 영상의 화면 비율을 분석하고자 한다. 화면비율은 르 꼬르뷔제의 모듈러를 응용하여 분석하였고, 영상의 틀에 맞추어 720*480사이즈로 제작했으며, 영상위에 올려 화면을 캡쳐하였다. 캡쳐된 파일은 인물의 위치파악을 좀더 쉽게 하기위하여 인물의 외곽선을 만들고 그 외곽선을 황금비의 모듈에 맞춰 기존 화면과 모듈안에서의 화면을 비교 분석하였다. Nowdays demand of motion-graphics contents is increasing, So this paper presents analysis of video screen ratio that is helpful to make and edit motion-graphics contents the module is applied wiht law of Le Corbusier's modulor, the module size is 720*480, and we captured motion-graphics and laid upon the module on the motion-graphics. For analysing character positions and showing the result easily, We made outlines focused with characters and tested to compared characters moving in prior screen with the module.
디클로로아세트산 처리에 따른 무수말레산-그래프트 EPDM의 팽윤 거동
권혁민 ( Hyuk Min Kwon ),최성신 ( Sung Seen Choi ) 한국고무학회 2013 엘라스토머 및 콤포지트 Vol.48 No.1
디클로로아세트산의 처리 여부에 따른 무수말레산-그래프트 EPDM (MAH -g-EPDM) 원재료(시험편-R)와 압축 시험편(시험편-C)의 팽윤 거동을 조사하였다. 시험편의 구조적 특징은 핵자기공명분광법(NMR)과 감쇠전반사-후리에변환 적외선분광법(ATR-FTIR)으로 분석하였다. 디클로로아세트산으로 처리하지 않았을 때, 시험편-R 의 팽윤비가 시험편-C의 팽윤비보다 2배 정도 컸으며 팽윤과 건조 과정을 반복하여도 팽윤비의 변화는 거의 없었다. 디클로로아세트산으로 처리하였을 때는 1차 팽윤비는 증가하였으나 건조 후 2차 팽윤비는 감소하였다. 시험편-C의 경우, 디클로로아세트산으로 처리하지 않았을 때의 팽윤비와 디클로로아세트산으로 처리한 시험편의 2차 팽윤비는 거의 유사하였다. 하지만, 시험편-R의 경우, 디클로로아세트산으로 처리한 시험편의 2차 팽윤비는 디클로로아세트산으로 처리하지 않았을 때의 팽윤비보다 크게 작았다. 디클로로아세트산으로 처리하였을 때 나타난 팽윤비 변화는 기존 가교점의 분해와 새로운 가교점의 형성으로 설명하였다. Swelling behaviors of raw (Specimen-R) and compressed (Specimen-C) samples of maleic anhydride-grafted EPDM (MAH-g-EPDM) depending on the treatment with dichloroacetic acid were investigated. Structural characteristics of the samples were analyzed by nuclear magnetic resonance spectroscopy (NMR) and attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR). When the samples were not treated with dichloroacetic acid, the swelling ratio of Specimen-R was greater than that of Specimen-C by about twice and the swelling ratio change was negligible though the process of swelling and drying was repeated. When the samples were treated with dichloroacetic acid, the first swelling ratios were increased but the second ones were decreased. For the Specimen-C, the swelling ratio of the sample without the dichloroacetic acid treatment and the second swelling ratio of the sample treated with dichloroacetic acid were nearly the same. However, for the Specimen-R, the second swelling ratio of the sample treated with dichloroacetic acid was strikingly lower than that of the sample without the dichloroacetic acid treatment. The swelling ratio change according to the dichloroacetic acid treatment was explained by dissociation of the existing crosslinks and formation of new crosslinks.