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한국전기전자재료학회> 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)

전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) update

Journal of the Korean Institute of Electrical and Electronic Material Engineers

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  • : 전기전자재료학회지(~1997)→전기전자재료학회논문지

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수록범위 : 1권1호(1988)~31권7호(2018) |수록논문 수 : 4,327
전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.)
31권7호(2018년 11월) 수록논문
최근 권호 논문
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1반투명 태양전지용 Al-Ti계 산화물 박막의 반사율 특성 개선에 관한 연구

저자 : 이은규 ( Eun Kyu Lee ) , 정소운 ( So Un Jeong ) , 방기수 ( Ki Su Bang ) , 이승윤 ( Seung-yun Lee )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 437-442 (6 pages)

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This work reports the preparation of Al-Ti based oxide thin films and their optical properties. Although the transmittance of a TiO2/Al2O3 bilayer structure was as high as 90% at wavelengths of 600 nm or larger, the reflectance of the bilayer reached its minimum at wavelengths of around 360 nm. The transmittance of an 89-nm-thick TiO2 thin film rapidly increased and then decreased at a critical wavelength because of destructive interference. The wavelength corresponding to the reflectance minimum increased after an increase in TiO2 film thickness. The smooth surface morphology of the AlTiO thin film was retained up to a film thickness of 65 nm, and the transmittance of the film was inversely proportional to film thickness, in accordance with the general tendency for optical films. The reflectance of the AlTiO film at visible light wavelengths was lower than that of the TiO2 film, which implies that the AlTiO film is suitable for applications as an optical thin film layer in semitransparent solar cells.

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2온도에 따른 InZnP/ZnSe/ZnS (핵/다중껍질) 양자점의 형광 특성 변화

저자 : 손민지 ( Min Ji Son ) , 정현성 ( Hyunsung Jung ) , 이윤기 ( Younki Lee ) , 구은회 ( Eunhae Koo ) , 방지원 ( Jiwon Bang )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 443-449 (7 pages)

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We investigated the temperature-dependent photoluminescence spectroscopy of colloidal InZnP/ZnSe/ZnS (core/ shell/shell) quantum dots with varying ZnSe and ZnS shell thickness in the 278~363 K temperature range. Temperature-dependent photoluminescence of the InZnP-based quantum dot samples reveal red-shifting of the photoluminescence peaks, thermal quenching of photoluminescence, and broadening of bandwidth with increasing temperature. The degree of bandgap shifting and line broadening as a function of temperature is affected little by shell composition and thickness. However, the thermal quenching of the photoluminescence is strongly dependent on the shell components. The irreversible photoluminescence quenching behavior is dominant for thin-shell-deposited InZnP quantum dots, whereas thick-shelled InZnP quantum dots exhibit superior thermal stability of the photoluminescence intensity.

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3기계학습 알고리즘을 이용한 반도체 테스트공정의 불량 예측

저자 : 장수열 ( Suyeol Jang ) , 조만식 ( Mansik Jo ) , 조슬기 ( Seulki Cho ) , 문병무 ( Byungmoo Moon )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 450-454 (5 pages)

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Because of the rapidly changing environment and high uncertainties, the semiconductor industry is in need of appropriate forecasting technology. In particular, both the cost and time in the test process are increasing because the process becomes complicated and there are more factors to consider. In this paper, we propose a prediction model that predicts a final “good” or “bad” on the basis of preconditioning test data generated in the semiconductor test process. The proposed prediction model solves the classification and regression problems that are often dealt with in the semiconductor process and constructs a reliable prediction model. We also implemented a prediction model through various machine learning algorithms. We compared the performance of the prediction models constructed through each algorithm. Actual data of the semiconductor test process was used for accurate prediction model construction and effective test verification.

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4전기방사에 의한 질화붕소 나노분말의 함량에 따른 질화붕소 나노섬유 합성 및 특성 평가

저자 : 이종혁 ( Jong Hyeok Lee ) , 전명표 ( Myoung Pyo Chun ) , 황진아 ( Jin Ah Hwang ) , 정영근 ( Young Geun Jung ) , 주제욱 ( Jae Uk Chu )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 455-461 (7 pages)

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Boron nitride (BN) nanofibers were fabricated using BN nanoparticles (70 nm) by electrospinning. Morphologies such as the diameter and density of the BN nanofibers are strongly influenced by the viscosity and dispersion state of the precursor solution. In this study, the precursor solution was prepared by ball milling BN nanoparticles and polyvinylpyrrolidone (PVP, Mw~1,300,000) in ethanol, which was electrospun and then calcined to produce BN fibers. High-quality BN nanofibers were well fabricated at a BN concentration of 15 wt% with their diameters in the range of 500 nm to 800 nm; the viscosity of the precursor solution was 400 mPa·S. The calcination of the as-electrospun BN fibers seemed to be completed by holding them at 350℃ for 2 h considering the TGA data. The morphologies and phases of the BN fibers were investigated by scanning electron microscopy (SEM) and X-ray diffractometry (XRD), respectively; Fourier transform infrared (FT-IR) was also used for structure analysis.

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5사다리꼴 PZT/Ag Laminate 외팔보 발전기의 압전 에너지 하베스팅 특성

저자 : 나용현 ( Yong-hyeon Na ) , 이민선 ( Min-seon Lee ) , 윤지선 ( Ji-sun Yun ) , 홍연우 ( Youn-woo Hong ) , 백종후 ( Jong-hoo Paik ) , 조정호 ( Jeong-ho Cho ) , 이정우 ( Jung Woo Lee ) , 정영훈 ( Young-hun Jeong )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 462-468 (7 pages)

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The piezoelectric energy harvesting characteristics of a trapezoidal cantilever generator with lead zirconate titanate (PZT) laminate were investigated with various Ag inner electrodes. The piezoelectric mode of operation was a transverse mode by using a planar electrode pattern. The piezoelectric cantilever generator was fabricated using trapezoidal cofired-PZT/Ag laminates by five specimens of 2, 3, 4, 7, and 13 layers of Ag. As the number of Ag electrodes increased, impedance and output voltage at resonant frequency significantly decreased, and capacitance and output current showed an increasing tendency. A maximum output power density of 7.60 mW/cm3 was realized for the specimen with seven Ag layers in the optimal condition of acceleration (1.2 g) and resistive load (600 Ω), which corresponds to a normalized power factor of 5.28 mW/g2·cm3.

KCI등재

6열화 시간 변화에 따른 폴리카보네이트 필름의 유전 특성에 관한 연구

저자 : 이성일 ( Sung Ill Lee )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 469-474 (6 pages)

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In this study, the capacity and FTIR of polycarbonate film that was degraded for 2, 4, and 8 h in a thermostat at 180℃ was measured. The results of this study are as follows. It was found that the capacity decreased with increasing degradation time and frequency. This findings suggest that the attraction between molecules and amorphous polycarbonate increased because it contains the ketone group (-C=O-) and the chain of dioxides group (-O-R-O-). Measurement by FTIR found that the time of thermal degradation has a smaller impact because the transmutation or variation of the material does not occur. Measurement by SEM magnified 1,000 times found that a longer thermal degradation time results in thermal decomposition of the specimen's particles.

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7비대칭 마그네트론 스퍼터로 증착된 비정질 탄소박막의 트라이볼로지 특성에서 CrC 삽입층 효과에 대한 연구

저자 : 김필중 ( Phil Jung Kim ) , 박용섭 ( Yong Seob Park )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 475-480 (6 pages)

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We investigated the tribological properties of amorphous carbon (a-C) films deposited with CrC interlayers of various thicknesses as the adhesive layer. A-C and CrC thin films were deposited using the unbalanced magnetron (UBM) sputtering method with graphite and chromium as the targets. CrC films as the interlayer were fabricated under a-C films, and various structural, surface, and tribological properties of a-C films deposited with various CrC interlayer thicknesses were investigated. With various CrC interlayer thicknesses under a-C films, the tribological properties of CrC/a-C films were improved; the increased film thickness exhibited a maximum high hardness of over 27.5 GPa, high elastic modulus of over 242 GPa, critical load of 31 N, residual stress of 1.85 GPa, and a smooth surface below 0.09 nm at the condition of 30-nm CrC thickness.

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8알루미늄 기반 Oxide/Metal/Oxide 구조의 투명전극 적용성 기초 연구

저자 : 김대균 ( Daekyun Kim ) , 최두호 ( Dooho Choi )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 481-485 (5 pages)

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In this study, oxide/metal/oxide-type transparent electrodes based on Al and ZnO were investigated. Thin films of these materials were sputter-deposited at room temperature. To evaluate the thickness dependence of the oxide layers, the top and bottom ZnO layers were varied in the range of 5~80 nm and 2.5~20 nm, respectively. When the thicknesses of the top and bottom ZnO layers were fixed at 30 nm and 2.5 nm, a maximum transmitance of 66% and sheet resistance of 16.5 Ω/□ were achieved, which is significantly improved compared with the Al layer without top and bottom ZnO layers showing a maximum transmitance of 44.3% and sheet resistance of 44 Ω/□.

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9최적화된 전자 수송층을 활용한 완전한 용액공정 기반 녹색 유기발광다이오드

저자 : 한주원 ( Joo Won Han ) , 김용현 ( Yong Hyun Kim )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 486-489 (4 pages)

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Solution-processed organic light-emitting diodes (OLEDs) have the advantages of low cost, fast fabrication, and large-area devices. However, most studies on solution-processed OLEDs have mainly focused on solution-processable hole transporting materials or emissive materials. Here, we report fully solution-processed green OLEDs including hole/electron transport layers and emissive layers. The electrical and optical properties of OLEDs based on solution-processed TPBi (2,2′,2″-(1,3,5-Benzinetriyl)-tris(1-phenyl-1-H-benzimidazole)) as the electron transport layer were investigated with respect to the spin speed and the number of layers. The performance of OLEDs with solution-processed TPBi exhibits a power efficiency of 9.4 lm/W. We believe that the solution-processed electron transport layers can contribute to the development of efficient fully solution-processed multilayered OLEDs.

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10다수전극형 전자종이 필름에서 인가전압에 따른 단일 컬러 가변에 관한 연구

저자 : 이상일 ( Sang-il Lee ) , 홍연찬 ( Youn-chan Hong ) , 김영조 ( Young-cho Kim )

발행기관 : 한국전기전자재료학회 간행물 : 전기전자재료학회논문지(J. Korean Inst. Electr. Electron. Mater. Eng.) 31권 7호 발행 연도 : 2018 페이지 : pp. 490-495 (6 pages)

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A multielectrode electronic paper film capable of expressing a single-color image was fabricated by injecting color electronic ink into an electronic paper panel; on the basis of its reflective or transparent properties, it is possible to control the expression of six single-color images and their transmittance. In this study, a single-color image was represented by driving a multielectrode electronic paper film; color coordinates were measured. The six capable single colors were yellowish pink (0.444, 0.354), white (0.355, 0.352), black (0.241, 0.241), orange (0.514, 0.360), reddish orange (0.606, 0.338), and reddish purple (0.469, 0.145). Color particles used in this paper were black and white, by which six colors are accomplished, but more single-color images can be combined by using cyan, magenta, and yellow particles.

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1연안해역에서 석유오염물질의 세균학적 분해에 관한 연구

(2006)홍길동 외 1명심리학41회 피인용

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2미국의 비트코인 규제

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(2006)홍길동41회 피인용

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