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Negative Effect of Au Nanoparticles on an IGZO TFT-based Nonvolatile Memory Device
임명훈,유광위,Jongtaek Lee,Seok-Won Jeong,노용한,박진홍,Namyong Kwon,정우식 한국물리학회 2014 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.64 No.3
In this letter, the electrical characteristics of nonvolatile memory devices based on back gate-typeindium gallium zinc oxide (IGZO) thin-film transistors (TFTs) are investigated in terms of the Aunanoparticles (NPs) employed in the floating gate-stack of the device. The size of the Au NPs iscontrolled using a by 500 C annealing process after the Au thin-film deposition. The size and theroughness of the Au NPs were observed by using scanning electron microscopy (SEM), atomic forcemicroscopy (AFM), and transmission electron microscopy (TEM). In order to analyze the electricalproperties according to Au NP size, we measured the current-voltage (ID-VG) characteristics of thenonvolatile memory devices fabricated without Au NPs and with Au NPs of various sizes. Thesize of the Au NP increased, so did the surface roughness of the gate. This resulted in increasedcarrier scattering, which subsequently degraded the on-current of the memory device. In addition,inter-diffusion between the Au and the -IGZO through the non-uniform Al2O3 tunneling layerseemed to further degrade the device performance.
아두이노와 모터드라이브를 활용한 비닐하우스 제설 시스템
임명훈(Myung Hoon Lim),정동근(Dong Keun Jung) 한국IT마케팅학회 2015 한국IT마케팅학회 논문집 Vol.1 No.1
In the current hardware sector it is represented by the open source hardware and software sectors, like the introduction of the concept of open-source Arduino has emerged as issues such as the Raspberry Pi. Paper, more affordable and creative products have Arduino represented by the open source hardware, convenience and to develop effective products with the Arduino and motor drivers by making a DC motor controller, first from the DC motor based on a two-dimensional robots, RC car, research Vinylhouses for the purpose of snow removal system for snow removal of RC boats, robots and toys, as well as current Vinylhouses
아두이노와 모터드라이브를 활용한 비닐하우스 제설 시스템
임명훈(Myung Hoon Lim),정동근(Dong Keun Jung) 한국IT마케팅학회 2015 한국IT마케팅학회 학술대회 Vol.2015 No.1
In the current hardware sector it is represented by the open source hardware and software sectors, like the introduction of the concept of open-source Arduino has emerged as issues such as the Raspberry Pi. Paper, more affordable and creative products have Arduino represented by the open source hardware, convenience and to develop effective products with the Arduino and motor drivers by making a DC motor controller, first from the DC motor based on a two-dimensional robots, RC car, research Vinylhouses for the purpose of snow removal system for snow removal of RC boats, robots and toys, as well as current Vinylhouses
심재우,임명훈,정성국,박진홍 한국물리학회 2012 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.60 No.5
In this paper, we investigated a layer exchange metal-induced crystallization (LE-MIC) process in detail for various thicknesses of the interfacial oxide (Al2O3: 0, 2, and 5 nm) at different annealing temperatures of 400 °C, 450 °C, 500 °C, and 550 °C, at which the metal-induced germanium melting (MIGM) process can occur. This MIGM mechanism, together with the LE-MIC process improved the quality of the Ge crystallites. Finally, we achieved fairly big (4 ∼ 5 µm) and (111)-oriented Ge crystal grains on a SiO2/Si substrate at 550 °C by combining the LE-MIC and the MIGM processes.