• Title/Summary/Keyword: Transparent electrode

Search Result 493, Processing Time 0.025 seconds

Transparent Electrodes for Semitransparent Perovskite Solar Cells (반투명 페로브스카이트 태양전지용 투명전극 소재)

  • Lee, Phillip;Ko, Min Jae
    • Current Photovoltaic Research
    • /
    • v.6 no.3
    • /
    • pp.74-80
    • /
    • 2018
  • Recently, perovskite solar cells have shown tremendous improvement in power conversion efficiencies. Moreover, they have potential in semitransparent solar cell applications due to their high absorption coefficients. In order to fabricate semitransparent perovskite solar cells with good performance, it is essential to consider the suitability of transparent electrode materials in various aspects, such as transparency, conductivity and fabrication process. In this review, candidate materials for transparent electrodes in perovskite solar cells including carbon-based nanomaterials, conductive polymers and metallic nanostructures are discussed.

A Study of the Yellowing Phenomenon in the Laser Patterning of Silver Nanowire (은 나노와이어 레이저 패터닝 시 발생하는 황변 현상에 대한 연구)

  • Hwang, June Sik;Park, Jong Eun;Yang, Min Yang
    • Journal of the Korean Society of Manufacturing Technology Engineers
    • /
    • v.24 no.1
    • /
    • pp.94-97
    • /
    • 2015
  • In this study, we introduce a yellowing phenomenon in silver nanowire laser patterning and attempt to understand the cause of this phenomenon. Silver nanowire is a promising alternative to indium tin oxide as a transparent electrode owing to its flexibility. Additionally, silver nanowire can be easily patterned by laser ablation, which is free of dangerous chemicals. However, a yellowish color change reducing visibility is observed on the patterned area of the silver nanowires, and this yellowing phenomenon prevents the use of silver nanowire as a transparent electrode material. We concluded that resolidified debris of melted and evaporated silver nanowires after laser ablation causes the color change of the electrode. Further research is needed to determine a means of mitigating this yellowing phenomenon.

Adhesion Change of AZO/PET Film by ZrCu Insertion Layer

  • Ko, Sang-Won;Jung, Jong-Gook;Park, Kyeong-Soon;Lim, Sil-Mook
    • Journal of the Korean institute of surface engineering
    • /
    • v.49 no.3
    • /
    • pp.252-259
    • /
    • 2016
  • In order to form an aluminum-doped zinc oxide (AZO) transparent electrode film on a polyethylene terephthalate (PET) substrate used for a flexible display substrate, the AZO transparent electrode was produced at low temperature without substrate heating. Even though the produced electrode showed characteristic optical transmittance of 90 % (at 550 nm) and sheet resistance within $100{\Omega}/sq$, cracks occurred 10 minutes after loading applied 2 mm radius of curvature, and the sheet resistance increased linearly. An insertion layer of ZrCu was formed between the AZO film and the PET substrate to suppress the generation of cracks on the AZO film. It was verified that the crack was not generated 30 minutes after the loading of 2 mm radius of curvature, and no increase in sheet resistance was recorded. There was also not cracks in the dynamic bending test of 4 mm radius, but surface resistance was slightly increased. As a result, the ZrCu insertion film improved the interfacial adhesion between the substrate and AZO film layer without increasing sheet resistance and decreasing transmittance.

Materials and Characteristics of Emerging Transparent Electrodes (차세대 투명전극 소재의 종류와 특성)

  • Chung, Moon Hyun;Kim, Seyul;Yoo, Dohyuk;Kim, Jung Hyun
    • Applied Chemistry for Engineering
    • /
    • v.25 no.3
    • /
    • pp.242-248
    • /
    • 2014
  • Flexibility of a transparent device has been required in accordance with miniaturization and mobilization needs in recent industry. The most representative material used as a transparent electrode is indium tin oxide (ITO). However, a couple of disadvantages of ITO are the exhaustion of natural resource of indium and its inflexibility due to inorganic substance. To overcome the limit of ITO, a variety of alternative materials have been researched on development of transparent electrodes and its properties through composite materials. In this review, we classify some of emerged materials with their general studies.

Transparent Electrode based on Poly(3,4-ethylenedioxythiophene)

  • Song, Keuk-Ryoul;Min, Hye-Kyoung;Oh, Eung-Ju;Kim, Yong-Bae
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2003.07a
    • /
    • pp.578-580
    • /
    • 2003
  • PEDOT [poly(3,4-ethylenedioxythiophene)] powder soluble in common organic solvent were synthesized by oxidative polymerization of EDOT (3,4-ethylene dioxythiophene) monomer using functional dopant, DEHSNa [sodium di(2-ethylhexyl)sulfosuccinate]. Transparent electrodes were made by spin casting of PEDOT/organic solvents on substrates. The electrode showed the transmittance < 90% in visible region and the surface resistance of> ${\sim}10^3\;ohm/{\square}$, respectively.

  • PDF

DC Characteristics of InP/InGaAs HPT's with an Optically Transparent ITO Emitter electrode (광학적 투명성을 가진 ITO를 에미터 전극으로 사용한 InP/lnGaAs HPT's의 DC 특성 분석)

  • 강민수;한교용
    • Proceedings of the IEEK Conference
    • /
    • 2001.06b
    • /
    • pp.13-16
    • /
    • 2001
  • InP/InGaAs Heterojunction phototransistors(HPT's) with an optically transparent ITO emitter electrode were fabricated and characterized. At the same time, heterojuntion transistors(HBT's) having the same device layout were fabricated. By comparison with InP/InGaAs HBT's, the do characteristics of InP/InGaAs HPT's showed the similar electrical charateristics of HBT's. the model parameters of the device were extracted and compared.

  • PDF

Dual - Drive & - Emission Panel

  • Miyashita, Takuya;Naka, Shigeki;Okada, Hiroyuki;Onnagawa, Hiroyoshi
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2004.08a
    • /
    • pp.707-710
    • /
    • 2004
  • We have proposed on dual-drive & -emission (DDE) panel based on organic light-emitting diodes (OLEDs). The device is composed on independent operation of two OLED structures with two transparent electrodes for data signals and an intermediate reflective electrode for common scan signal. Typical device structure is ITO / organic electroluminescent layer (1) /intermediate reflective electrode / organic electroluminescent layer (2) /transparent electrode. Symmetric bright emission could be obtained by applying AlNd as the intermediate reflective electrode and $MoO_3$ as a hole injection layer for upper device structure. The proposed panel is useful for emissive face-to-face panel exhibited for different images.

  • PDF

Synthesis of TCO-less Solar Cell using Metal Mesh Type Electrode and its Photovoltaic Characteristics (금속 메쉬 전극을 이용한 TCO-less 광전변환소자 제작 및 광전변환 특성)

  • Park, Min-Woo;Sung, Youl-Moon
    • Journal of the Korean Institute of Illuminating and Electrical Installation Engineers
    • /
    • v.25 no.2
    • /
    • pp.126-130
    • /
    • 2011
  • Transparent conductive oxide (TCO) is an important part in the construction of dye-sensitized solar cells (DSCs) because of its low sheet resistance, sufficient light transparent ability and high photoelectrical response as a porous photo-electrode material of DSCs. However, the use of TCO for the two DSC electrodes can result in significant cost increase for the less effective DSCs compared to Si based solar cell. Therefore, the replacement of TCO is required for the commercial production of DSCs. In this study, TCO electrodes are replaced by stainless steel mesh. The 3.44[%] efficiency of the prepared TCO-less DSCs sample was obtained.

Surface Plasmon Resonance Effect of Ag Layer Inserted in a Highly Flexible Transparent IZTO/Ag/IZTO Multilayer Electrode for Flexible Organic Light Emitting Diodes

  • Park, Ho-Kyun;Jun, Nam-Ho;Choi, Kwang-Hyuk;Kim, Han-Ki
    • 한국정보디스플레이학회:학술대회논문집
    • /
    • 2008.10a
    • /
    • pp.601-604
    • /
    • 2008
  • We report on the Ag thickness effect on the electrical and optical properties of indium zinc tin oxide (IZTO)-Ag-IZTO multilayer electrode grown on a PET substrate and the surface plasmon effect of Ag layer on the optical properties of IZTO-Ag-IZTO electrode. Using an IZTO-Ag-IZTO multilayer with a total thickness below ~80 nm, we can obtain high-quality flexible electrode with very low sheet resistance, high transmittance, high work function and superior flexibility.

  • PDF

Cu Electrode Fabrication by Acid-assisted Laser Processing of Cu Nanoparticles and Application with Transparent·Flexible Electrode (구리 나노 입자에 산-보조 레이저 공정을 적용한 구리 전극 제작 공정 개발 및 투명·유연 전극으로 활용)

  • Jo, Hyeon-Min;Gwon, Jin-Hyeong;Ha, In-Ho;Go, Seung-Hwan
    • Proceedings of the Korean Institute of Surface Engineering Conference
    • /
    • 2018.06a
    • /
    • pp.121-121
    • /
    • 2018
  • Copper is a promising electronic material due to low cost and high electrical conductivity. However, the oxidation problem in an ambient condition makes a crucial issue in practical applications. In here, we developed a simple and cost-effective Cu patterning method on a flexible PET film by combining a solution processable Cu nanoparticle patterning and a low temperature post-processing using acetic acid treatment, laser sintering process and acid-assisted laser sintering process. Acid-assisted laser sintering processed Cu electrode showed superior characteristics in electrical, mechanical and chemical stability over other post-processing methods. Finally, the Cu electrode was applied to the flexible electronics applications such as flexible and transparent heaters and touch screen panels.

  • PDF