Ar/$O_2$에 따른 ZnO 박막의 C-축 배향성에 관한 연구

이동윤,박용욱,남산,이전국,김현재,윤석진,황금찬,Lee, Dong-Yoon,Park, Yong-Wook,Nam, Sahn,Lee, Jeon-Kook,Kim, Hyun-Jai,Yoon, Seok-Jin,Whang, Keum-Chan 한국전기전자재료학회 2000 전기전자재료학회논문지 Vol.13 No.7

Zinc Oxide(ZnO) thin films on Si(100) substrate were deposited by RF magnetron reactive sputtering. The charcteristics of ZnO thin films on argon/oxygen(Ar/O$_2$)gas ratios RF power and substrate temperature were investigated by XRD, SEM, and AFM analyses. C-axis preferred orientation resistivity and surface roughness highly depended on Ar/O$_2$gas ratios. The resistivity of ZnO thin films rapidly increased with increasing oxygen ratio and the resistivity value of 9$\times$10$^{7}$ $\Omega$cm was obtained at a working pressure of 10 mTorr with Ar/O$_2$=50/50. The surface roughness was also improved with increasing oxygen ratio and the ZnO films deposited with Ar/O$_2$=50/50 showed the excellent roughness value of 28.7$\AA$.

범밀도함수법을 이용하여 계산한 IIIB족 원소가 도핑된 ZnO의 전자상태

이동윤,이원재,민복기,김인성,송재성,김양수,Lee, Dong-Yoon,Lee, Won-Jae,Min, Bok-Ki,Kim, In-Sung,Song, Jae-Sung,Kim, Yang-Soo 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.7

The electronic states of ZnO doped with Al, Ga and In, which belong to III family elements in periodic table, were calculated using the density functional theory. In this study, the calculation was performed by two Programs; the discrete variational Xa (DV-Xa) method, which is a sort of molecular orbital full potential method; Vienna Ab-initio Simulation Package (VASP), which is a sort of pseudo potential method. The fundamental mixed orbital structure in each energy level near the Fermi level was investigated with simple model using DV-Xa. The optimized crystal structures calculated by VASP were compared to the measured structures. The density of state and the energy levels of dopant elements were shown and discussed in association with properties.

염료감응형 태양전지와 열전발전소자를 결합한 복합 태양전지의 구조 및 특성

이동윤,송재성,이원재,김인성,정순종,Lee, Dong-Yoon,Song, Jae-Sung,Lee, Won-Jae,Kim, In-Sung,Jeong, Soon-Jong 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.4

The tandem solar cell composed of a dye-sensitized solar cell (DSC) and a thermoelectric generator (TEG) was designed. In such new cell, the characteristics of DSC and TEG were investigated. DSC uses the wavelength range of 380∼750 nm and has the maximum efficiency of below 10 %. If the solar light transmitted through DSC can be converted to heat energy, TEG can generate electric energy using this heat energy. By this means, it is possible to utilize most of solar energy in the wavelength range of 350∼3000 nm for electric generation and it can be expected to obtain higher solar energy conversion efficiency exceeding the known limit of maximum efficiency. For this purpose we suggest the tandem solar cell constructed with DSC and TEG. In this structure, DSC has a carbon nanotube film as a counter electrode of DSC in order to collect the solar light and convert it to heat energy. We measured the I-V characteristics of DSC and TEG, assembled to the tandem cell. As a result, it was shown that DSC with carbon nanotube and TEG had the efficiency of 9.1 % and 6.2 %, respectively. From this results, it is expected that the tandem solar cell of the new design has the possibility of enhanced conversion efficiency to exceed above 15 %.

SAW 필터용 ZnO 압전 박막의 전기적 특성

이동윤,윤석진,Lee, Dong-Yoon,Yoon, Seok-Jin 한국전기전자재료학회 2005 전기전자재료학회논문지 Vol.18 No.10

The structural and electrical property of RF magnetron sputtered ZnO thin film have been studied as a function of RF power, substrate temperature, oxygen/argon gas ratio and film thickness at constant sputtering power, sputtering working pressure and target-substrate distance. To analyze a crystallo-graphic properties of the films, $\theta$/2$\theta$ mode X-ray diffraction, SEM, and AFM analyses. C-axis preferred orientation, resistivity and surface roughness highly depended on oxygen/argon gas ratio. The resistivity of ZnO thin film(6000 ${\AA}$) rapidly increased with increasing oxygen ratio and the resistivity value of $9 {\ast} 10^7 {\Omega}cm$ was obtained at a working pressure of 10 mTorr with the same oxygen/argon gas ratio. The surface roughness was also improved with increasing oxygen ratio and the ZnO films deposited with the same oxygen/argon gas ratio showed the excellent roughness value of 28.7 ${\AA}$. With increase of the substrate temperature, The C-axis preferred orientation of ZnO thin film increases and the resistivity decreases due to deviation from the stoichiometric ZnO due to oxygen deficiency.

특수교육철학의 필요성과 나딩스 교육사상의 통합교육적 함의

이동윤(Lee Dong Yoon),예철해(Ye Cheol Hae) 고려대학교 교육문제연구소 2018 敎育問題硏究 Vol.31 No.3

본 연구는 특수교육철학의 필요성을 제기하고, 나딩스의 교육사상에서 특수교육적 요소를 도출하여 통합교육에 대한 구체적인 하나의 담론을 제시하는 데에 목적을 두고 진행되었다. 연구자는 이를 통해 다음과 같은 결론을 얻었다. 첫째, 특수교육철학 연구의 활성화가 필요하다. 특수교육의 규모가 급격히 증대되어 특수교육철학의 역할이 더욱 중요한 시기임에도 불구하고, 특수교육철학 연구는 사실상 부재 상황에 가깝다. 둘째, 특수교육철학의 가장 시급한 부문은 통합교육이며, 이에 대한 새로운 접근이 필요하다. 일반교사들은 통합교육에 대해 특수교육적 접근이 아닌 일반교육적 접근을 함으로써 통합교육을 효과적으로 운용할 수 있다. 셋째, 나딩스의 교육사상은 통합교육적 함의가 있다. 나딩스의 교육목적론과 모델링, 실천, 확언의 교육방법은 통합교육을 난해한 것으로 여기는 일반교사들이 통합교육을 시작할 수 있는 단초가 될 수 있을 것이다. This paper examines philosophical implications of Nel Noddings on inclusive education. It aims to crystallize a concrete argument of inclusive education as an example of what it means to approach special education philosophically, i.e. philosophy of special education. First, philosophy of special education needs a particular attention in educational practice and research. The paper argues that we live in a decisive period where philosophical understanding of special education is significant to create the integrated society. Second, inclusive education is one of the urgent issues in philosophy of special education. It is common to take the matters of inclusion in ways of special education. This paper, however, suggests an effective way for teachers to engage with inclusion through the understanding of non󰠏special education. Third, educational thoughts of Noddings show some implications on inclusive education. In particular, this paper argues that inclusive education shares some ideas of Noddings on the aims of education and teaching methods such as modeling, practice, confirmation. The findings of this study suggest concrete ways for teachers in general to practice inclusive education. This study attempts to show a philosophical approach to special education in analysis of inclusive education with Noddings.

정보전달방법에 따른 사이버디자인교육의 문제점 분석

이동윤(Lee Dong-Yoon),김종기(Kim Jong-Ki) 한국디자인학회 2002 디자인학연구 Vol.- No.46

탈황석고의 처리방법변화가 고로슬래그 미분말 다량 치환 모르타르의 공학적 특성에 미치는 영향

이동윤(Lee, Dong-Yoon),한천구(Han, Cheon-Goo) 대한건축학회 2017 大韓建築學會論文集 : 構造系 Vol.33 No.2

In this research, the influence of desulfurized gypsum (FGD) with different carbon removing methods of 0.3 mm sieving, and 500℃ high temperature combustion on high volume blast furnace slag cement mortar was evaluated with different replacement ratios of 1 : 2, and 1 : 4 for blast furnace slag. As an experiment result, flow was generally decreased with FGD replacing while slight increased was shown with 5 to 10 % of replacement for 1 : 4 mortar. As FGD replacement, air content was reduced setting time was shortened. Compressive strength was generally decreased with 1 : 2 mortar mixtures, but for 1 : 4 mortar mixture, the highest compressive strength value was obtained when FGD was replaced about 10 % due to the generation of ettringite. Drying shrinkage was decreased and absorption rate was increased with increased FGD replacement ratio. Overall, as a carbon removing method of FGD, 0.3 mm sieving showed better results than 500℃ high temperature combustion, and the mortar mixture was the most appropriate results were obtained with 1 : 4 mixture and 10 % of FGD replacement ratio.

제19대 국회의원선거와 부산지역 정당지지도 분석

이동윤(Dong Yoon Lee) 경희대학교 인류사회재건연구원 2012 OUGHTOPIA Vol.27 No.1

이 연구는 제19대 국회의원선거에서 부산 지역을 중심으로 펼쳐진 각 정당의 후보공천과 선거과정을 고찰하고, 그 선거 결과를 정당지지도 차원에서 분석하였다. 전통적으로 새누리당의 강력한 지지기반이었던 부산 지역은 이번 선거에서 유권자 투표행태의 점진적 변화 가능성이 표출되었다. 전체 18개 의석을 놓고 경쟁한 부산 지역은 이번 선거에서 새누리당이 16석, 민주통합당이 2석을 획득하였다. 현실적으로 다양한 정치 ?사회적 균열에도 불구하고, 과거 역대 선거에서 지역주의 구도를 통해 새누리당에 대해 비교적 강력한 정당지지도와 정체성을 보여 왔던 부산 유권자들은 이번 선거 결과를 통해 단순히 지역주의 차원이 아닌 또 다른 정치적 균열과 권력관계로의 변화 가능성을 표출한 것으로 평가할 수 있다. 즉, 이번 선거에서 부산 유권자들은 민주당에 대한 높은 지지를 통해 새누리당과 그 후보들을 대신할 수 있는 새로운 인물과 대체정당의 기대심리를 표출했다는 것이다. 결과적으로 제19대 국회의원선거를 통해 나타난 부산 지역의 선거 결과는 향후 8개월 앞으로 다가온 제18대 대통령선거나 차기 국회의원선거에서도 부산 지역의 정당지지도 변화에 따라 선거 결과에 영향을 미치는 또 다른 변수로 작용할 가능성이 커지고 있으며, 이에 따른 지속적인 관찰과 연구가 필요할 것으로 판단된다. The purpose of this study is to review the process of candidate nomination and electoral campaign of each party in Busan in the 19th National Assembly Election, and to analyze the electoral result in dimension of party support and politics. Busan voters, who were strong supporters for Saenuri Party traditionally, expressed change possibility of their voting behavior in this election. In Busan, was allocated 18 seats in this election, Sanuri Party gained 16 seats, and Democratic United Party (DUP) got 2 seats. actually, in spite of various social-political cleavages, Busan voters displayed strong party support and identity toward Saenuri party through regionalism structure in the last elections. But, in this election, Busan voters expressed change possibility of regional structure as well as toward another political cleavage and new power relations. That is, Busan voters represented the expectation psychology for new figure and alternative party instead of Saenuri Party through the high support for DUP. In conclusion, the result of this election is making more higher possibility, that change of party support from Saenuri Party to other parties in Busan will effect the 18th presidential election and next national assembly election, so that it needs continuous observation and research.

동아시아 공동체와 남북한 상생의 지역협력

이동윤(Dong-Yoon Lee) 경희대학교 인류사회재건연구원 2008 OUGHTOPIA Vol.23 No.1

이 연구는 최근 들어 그 논의가 활발하게 진행되고 있는 동아시아 지역의 지역협력과 공동체 구상과 관련하여 그 논의과정에서 소외되어 있는 북한의 동아시아 공동체 참여와 지역협력의 기능적 역할을 모색하는데 주요 목적이 있다. 특히 이 연구는 지역협력이나 통합과 관련된 기존의 이론적 접근방법이나 시각을 달리 하여 주역(周易) 에서 논의되는 ‘상생’(相生) 개념을 통해 남북한 경제협력과 동아시아 공동체의 참여방안을 고찰하였다. 현실적으로 동아시아의 지역협력과 공동체를 구성함에 있어서 동북아 국가들 사이의 협력관계가 중요시되고 있는 시점에서 북한 문제는 단지 남북한 사이의 문제일 뿐만 아니라 중국과 일본, 그리고 동남아국가들 사이의 지역협력과 통합을 추진하기 위한 선결과제로 논의되고 있다. 여기서 우리는 동아시아 지역협력과 공동체 구성에 있어서 남북한이 서로가 서로를 살리고 발전시킬 수 있는 ‘상생’의 협력관계를 모색하게 된다. 최근 들어 북한의 핵 문제를 둘러싼 남북한 관계는 주변의 지역 정세와 맞물려 극한적 ‘상극’(相剋) 상태를 표출하여 왔으나, 남북한 상호 간에 ‘상극’의 충돌을 피하고 상생을 통한 협력의 이니셔티브를 창출해내는 방법은 결국 북핵 문제의 평화적 해결과 남북한 경제협력의 활성화, 그리고 이를 통하여 동아시아 지역에서 중국이나 일본, 미국의 패권적 경쟁관계를 조율할 수 있는 남북한 사이의 교량적 역할을 수행하는 것이다. The purpose of this study is to grope for participation way and functional role of North Korea, who did not participate in regional cooperation and community building process in East Asia. Especially, apart from recently theoretical review, this study explored economic cooperation between South Korea and North Korea and North Korea's participation way to East Asian community building from a view point of ‘mutual existence’ concept of the Book of Changes, which is a Chinese classic on divination. At the present time, which regards cooperation relations among East Asian countries as important for East Asian regional cooperation and community building, North Korean problem is not only a prerequisite for the relationship between South Korea and North Korea, but also for regional cooperation and community building in East Asia. Here, we need to research for cooperation relationship of ‘mutual existence,’ which concept could keep alive and develop each other between South Korea and North Korea in the East Asian regional cooperation. Recently, the relationship between South Korea and North Korea is expressing the extreme situation of ‘mutual destruction’ because of North Korean nuclear problem, but this can be a turning point to make an initiative through the cooperation of ‘mutual existence,’ which can evade conflicts of ‘mutual destruction.’ After all, regional cooperation way for ‘mutual existence’ between South Korea and North Korea is to resolve the North Korean nuclear problem peacefully, to activate economic cooperation between South Korea and North Korea, and then to carry out the bridge role to tune up the hegemonic competitive relations between China and Japan and U.S. in East Asia.

국회의 입법과정과 시민단체의 역할

이동윤(Dong-Yoon Lee) 한국정당학회 2007 한국정당학회보 Vol.6 No.1

본 연구는 민주화 이후 한국의 시민단체 성장과 국회와의 역학관계 변화를 개괄적으로 살펴보고, 국회의 입법과정에 시민단체가 어떤 역할을 수행하고 있는지 살펴보는 데 주요 목적이 있다. 특히 본 연구는 참여연대의 활동을 하나의 연구 사례로 선택하여 그들의 의정감시와 입법청원 활동을 조사하고, 이것이 국회의 의원발의와 같은 입법활동에 어떤 경로로 영향을 미치고 있는지를 분석하였다. 연구 결과, 민주화 이후 시민단체의 역량이 급격하게 증가함에 따라 다양한 목적과 활동을 중심으로 한 시민단체의 입법참여 운동이 활발하게 전개되고 있음을 알 수 있었다. 특히 참여연대의 경우 보다 조직적이고 전문화된 활동 역량을 갖추고, 입법을 위한 다양한 네트워크와 압력, 로비활동 등을 통해 입법참여 활동을 추진하여 왔다. 이들의 이러한 활동은 단기적인 국면에서 국회의 입법과정에 커다란 영향을 미치고 있지는 못하였지만, 보다 중ㆍ장기적인 차원에서 국회의 의원발의와 입법과정에 긍정적인 효과를 발휘하고 있다는 사실을 발견할 수 있었다. The purpose of this study is two-fold. First, it is to review how civil groups in Korea have flourished since the 1990s and to evaluate the changing relationship between civil groups and the National Assembly in accordance with the changing status of civil groups in Korean society. Second, it is to analyze the role of civil groups in the legislative process and, in doing so, to provide an insight on the conflicting relationship between representative and participatory democracy. For these purposes, this study conducts a case study on the activities of the People’s Solidarity for Participatory Democracy(PSPD) and examines the impacts of these activities on the legislative process. The results indicate that the power of civil groups has increased significantly since the democratization and they are engaged actively in diverse legislative activities for various public goals. A case study on the PSPD reveals that its participations in the legislative process have achieved, in the long run, its intended goals with respect to the bill introduction though it appears to be unsuccessful in the short term. In conclusion, it can be said that enhanced participatory democracy due to the increased level of activities of civil groups plays an important role as a remedy for the limitations in representative democracy.