• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2006년도 하계학술대회 논문집 Vol.7
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• pp.103-104
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• 2006

Transparent conductive oxide (TCO) are necessary as front electrode for increased efficiency of LED. In our paper, transparent conducting alminum-doped Zinc oxide films (AZO) were prepared by rf magnetron sputtering on glass (corning 1737) substrate, were then annealed at temperature $400^{\circ}C$ for 2hr. The smooth AZO films were etched in diluted HCL (0.5%) to examine the surface morphology properties as a variation of the time. The surface morphology of AZO films increased as a time. We observed texture structure of AZO thin film etched for 1min.

• Advances in materials Research
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• 제1권4호
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• pp.299-310
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• 2012

This article describes the synthesis of a novel N-substituted pyrrole monomer containing an azobenzene group. The 2-[N-ethyl-N-[4-[(4-nitrophenyl) azo]-phenyl] amino] ethyl-3-chloropropionate (RedII) compound was synthesized via reaction of 4-nitro-4'-[N-ethyl-N-(2-hydroxyethyl)-amino] azobenzene (RedI) and 3-chloropropionic acid. RedII was reacted with the potassium salt of pyrrole then 2-[N-ethyl-N-[4-[(nitro phenyl) azo] phenyl] amino] ethyl-N-pyrrolyl propionate (Py-RedII) was prepared. Chemical polymerization of Py-RedII and copolymerization of Py-RedII with pyrrole carried out using $FeCl_3$. Poly (2-[N-ethyl-N-[4-[(nitro phenyl) azo] phenyl] amino] ethyl-N-pyrrolyl propionate) (PPy-RedII) was characterized by UV, IR, $^1HNMR$, $^{13}CNMR$ spectroscopies. Electropolymerization of Py-RedII and electroco-polymerization of Py-RedII and pyrrole were studied using conventional three electrodes system, Ag/AgCl reference electrode, platinum counter electrode and GC disk working electrode. Scanning electron microscopy (SEM), thermogravimetry analysis (TGA) and differential scanning calorimetry (DSC) were used for thermal and rheological studies. The TGA curve of PPy-RedII demonstrated a high thermal stability up to 200°C and its DSC thermogram showed two endothermic peaks at 88 and $122^{\circ}C$. The glass transition temperature of the polymer was found to be above the room temperature. Electrical conductivities of PPy-RedII and it's copolymer with pyrrole (PPy-RedII-co-Py) were studied by the four-probe method and produced conductivities of $7.5{\times}10^{-4}$ and $6.5{\times}10^{-3}Scm^{-1}$, respectively.

• 전기화학회지
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• 제22권2호
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• pp.60-68
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• 2019

이차 전지의 고전압 구동은 기존 셀 구조의 변화 없이도 고용량을 구현할 수 있는 유용한 접근 방법 중에 하나이나, 전극 표면에서의 극심한 부반응과 전극 활물질의 구조 붕괴 등과 같은 문제를 야기하게 된다. 본 연구에서는 니켈-망간-코발트 삼성분계(NCM) 활물질을 도입한 양극의 고전압 구동을 위해 원자층 증착법 (Atomic Layer Deposition, ALD)을 통해 전극판 표면에 $Al_2O_3$와 ZnO층으로 구성된 코팅 층을 형성하였다. 기존 ALD법으로 제조되는 박막에 비해 유사한 조건에서도 두꺼운 Al-doped ZnO (AZO)층을 최초로 형성하였고, 코팅된 AZO층의 두께를 달리한 NCM 기반의 양극판을 제조하였다. ALD 코팅된 양극이 도입된 코인셀을 제조하여 두껍게 형성된 코팅 층의 두께에 따른 고전압에서 충방전 거동을 확인하였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2004년도 춘계학술대회 논문집 디스플레이 광소자분야
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• pp.98-101
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• 2004

AZO(ZnO:Al) thin film were prepared by FTS(Facing Target Sputtering) system. Change the sputtering conditions, AZO thin film deposited the lower resistivity(<$10-4{\Omega}cm$) so it can use to be a display application electrode. In this study, the electrical and crystallographic effects of target type have been investigated. The crystal structure was studied by XRD and the resistivity of AZO thin film was obtained by the four-point probe.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2007년도 하계학술대회 논문집 Vol.8
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• pp.444-445
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• 2007

Aluminum-doped zinc oxide (AZO) films are attractive materials as transparent conductive electrode because they are inexpensive, nontoxic and abundant element compared with indium tin oxide (ITO). AZO films have been deposited on glass (coming 1737) substrates by RF magnetron sputtering system. An ultrathin layer of nickel oxide (NiO) was deposited on the AZO anode to enhance the hole injections in organic light-emitting diodes (OLED). The current density-voltage and luminescence-voltage properties of devices were studied and compared with ITO device.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2007년도 하계학술대회 논문집 Vol.8
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• pp.446-447
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• 2007

Aluminisum-doped zinc oxide (AZO) films are attractive materials as transparent conductive electrode because they are inexpensive, nontoxic and abundant element compared with indium tin oxide (ITO). In our paper, AZO films have been deposited on glass (coming 1737) substrates by RF magnetron sputtering. The AZO film was post-annealed at $600^{\circ}C$, $800^{\circ}C$ for 2 hr with $N_2$ atmosphere, respectively. We investigated that the electric properties and qualitative analysis of AZO films, which measured using the methods of Hall effect, X-ray photoelectron spectroscopy (XPS).

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2005년도 춘계학술대회 논문집 디스플레이 광소자 분야
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• pp.69-71
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• 2005

In this study, Al doped ZnO(AZO)thin film were prepared on glass substrates by FTS(Facing targets Sputtering) system. We investigated electrical.. optical and structural properties of AZO thin film under the substrate temperature of the R.T. $100^{\circ}C$, $200^{\circ}C$, respectively, From XRD measurements it was found the crystallization of AZO thin film was increased with increasing the substrate temperature.

• 한국진공학회:학술대회논문집
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• 한국진공학회 2015년도 제49회 하계 정기학술대회 초록집
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• pp.123-123
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• 2015

Al doped ZnO(AZO) films as a transparent conductive oxide (TCO) electrode were deposited on glass, polyethylene naphthalate (PEN) and polyethylene terephthalate (PET) at room temperature by a conventional rf-magneton sputtering (CMS) and a facing target sputtering (FTS) using Al2O3 and ZnO targets. In order to investigation of AZO properties, the structural, surface morphology, electrical, and optical characteristics of AZO films were respectively analyzed. The resistivities of AZO films using FTS system were $6.50{\times}10-4{\Omega}{\cdot}cm$ on glass, $7.0{\times}10-4{\Omega}{\cdot}cm$ on PEN, and $7.4{\times}10-4{\Omega}{\cdot}cm$ on PET substrates, while the values of AZO films using CMS system were $7.6{\times}10-4{\Omega}{\cdot}cm$ on glass, $1.20{\times}10-3{\Omega}{\cdot}cm$ on PEN, and $1.58{\times}10-3{\Omega}{\cdot}cm$ on PET substrates. The AZO-films deposited by FTS system showed uniform surface compared to those of the films by CMS system. We thought that the films deposited by FTS system had low stress due to bombardment of high energetic particles during CMS process, resulted in enhanced electrical conductivity and crystalline quality by highly c-axis preferred orientation and closely packed nano-crystalline of AZO films using FTS system.

• 열처리공학회지
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• 제29권6호
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• pp.272-276
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• 2016

Al doped ZnO (AZO) single layer and AZO/Ag bi-layered films were deposited on the glass substrates by radio frequency and direct current magnetron sputtering and then the effect of Ag buffer layer on the electrical and optical properties of the films was investigated. The thicknesses of AZO upper layer was kept as 100 nm, while Ag buffer layer was varied from 5 to 15 nm. The observed results mean that opto-electrical properties of the AZO films is influenced with Ag buffer layer and AZO film with 10 nm thick Ag buffer layer show the higher opto-electrical performance than that of the AZO single layer film prepared in this study.

• 대한기계학회논문집B
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• 제37권6호
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• pp.577-582
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• 2013

AZO(Aluminium-doped Zinc Oxide)는 기존의 LCD, OLED, 광센서, 유기태양전지 등의 투명전극에 널리 사용되는 ITO(Indium Tin Oxide)를 대체하기 위한 물질로 주목받고 있다. 본 연구에서는 유기태양전지의 투명 전극으로 많이 사용되는 ITO 를 대체하기 위해 원자층 증착(ALD) 공정의 저온 선택적 증착 특성을 이용하여 유연성 폴리머인 PEN 기판상에 AZO 투명전극을 직접 패턴방식으로 제조하고, 그 투명전극의 구조적, 전기적, 광학적 특성을 평가하였다. 전기적, 광학적 특성 결과들로부터 원자층 증작공정의 저온 선택적 증착 특성을 통해 형성된 AZO 투명전극의 유기태양전지로의 적용 가능성을 확인할 수 있었다.