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oe1(光电查) - 科学论文

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出版时间
  • 2019
研究主题
  • solution deposition
  • printable electronic transport layer
  • multilayer OLEDs
  • fully inkjet printed
应用领域
  • Optoelectronic Information Science and Engineering
机构单位
  • Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
  • Peking University
75 条数据
?? 中文（中国） ▾

  • Manufacturing of All Inkjet-Printed Organic Photovoltaic Cell Arrays and Evaluating their Suitability for Flexible Electronics

    摘要： The generation of electrical energy depending on renewable sources is rapidly growing and gaining serious attention due to its green sustainability. With fewer adverse impacts on the environment, the sun is considered as a nearly infinite source of renewable energy in the production of electrical energy using photovoltaic devices. On the other end, organic photovoltaic (OPV) is the class of solar cells that offers several advantages such as mechanical flexibility, solution processability, environmental friendliness, and being lightweight. In this research, we demonstrate the manufacturing route for printed OPV device arrays based on conventional architecture and using inkjet printing technology over an industrial platform. Inkjet technology is presently considered to be one of the most matured digital manufacturing technologies because it offers inherent additive nature and last stage customization flexibility (if the main goal is to obtain custom design devices). In this research paper, commercially available electronically functional inks were carefully selected and then implemented to show the importance of compatibility between OPV material stacks and the device architecture. One of the main outcomes of this work is that the manufacturing of the OPV devices was accomplished using inkjet technology in massive numbers ranging up to 1500 containing different device sizes, all of which were deposited on a flexible polymeric film and under normal atmospheric conditions. In this investigation, it was found that with a set of correct functional materials and architecture, a manufacturing yield of more than 85% could be accomplished, which would reflect high manufacturing repeatability, deposition accuracy, and processability of the inkjet technology.

    关键词： inkjet technology,flexible electronics,organic photovoltaics,Indium Tin Oxide (ITO) free solar cells

    更新于2025-11-14 17:28:48

  • A Facile Approach for Fabricating Microstructured Surface Based on Etched Template by Inkjet Printing Technology

    摘要： Microstructures are playing an important role in manufacturing functional devices, due to their unique properties, such as wettability or ?exibility. Recently, various microstructured surfaces have been fabricated to realize functional applications. To achieve the applications, photolithography or printing technology is utilized to produce the microstructures. However, these methods require preparing templates or masks, which are usually complex and expensive. Herein, a facile approach for fabricating microstructured surfaces was studied based on etched template by inkjet printing technology. Precured polydimethylsiloxane substrate was etched by inkjet printing water-soluble polyacrylic acid solution. Then, the polydimethylsiloxane substrate was cured and rinsed, which could be directly used as template for fabricating microstructured surfaces. Surfaces with raised dots, lines, and squares, were facilely obtained using the etched templates by inkjet printing technology. Furthermore, controllable anisotropic wettability was exhibited on the raised line microstructured surface. This work provides a ?exible and scalable way to fabricate various microstructured surfaces. It would bring about excellent performance, which could ?nd numerous applications in optoelectronic devices, biological chips, microreactors, wearable products, and related ?elds.

    关键词： inkjet printing,microstructured surface,anisotropic wettability,etched template

    更新于2025-11-14 15:27:09

  • [Lecture Notes in Electrical Engineering] Advances in Graphic Communication, Printing and Packaging Volume 543 (Proceedings of 2018 9th China Academic Conference on Printing and Packaging) || Application of Anthracene-Based Fluorescent Materials on Green Fluorescent Inkjet Ink

    摘要： Presently, the existing green ?uorescent materials are rare earth luminescent material, which cannot reach the requirement of inkjet ink on dispersion and stability because of the inferior solubleness. In this paper, the ?uorescent inkjet inks were prepared by anthracene-based derivatives, ink’s printability was tested and the relationship between molecular structure and ink’s printability was researched systematically. Finally, the optimal formula of green ?uorescent inkjet ink was obtained. The results showed the photophysical properties of proofs a–c had obvious change comparing with inks a–c and the contact angle of ink d was the biggest of all due to the planar construction of ?uorescent material with large conjugate degree. The green ?uorescent material: 9, 10-bis (4-methoxyphenylethynyl) anthracene with 0.5% and crylic acid B817 with 12% formed the optimal formula. The printing quality of ink prepared by the optimal formula can accord with the demand of digital printing quality.

    关键词： Fluorescent inkjet ink,Photophysical properties,Ink’s printability,Anthracene-based ?uorescent materials

    更新于2025-11-14 15:26:12

  • High-Mobility Inkjet-Printed Indium-Gallium-Zinc-Oxide Thin-Film Transistors Using Sr-Doped Al2O3 Gate Dielectric

    摘要： In this paper, we demonstrate high-mobility inkjet-printed indium-gallium-zinc-oxide (IGZO) thin-film transistors (TFTs) using a solution-processed Sr-doped Al2O3 (SAO) gate dielectric. Particularly, to enhance to the electrical properties of inkjet-printed IGZO TFTs, a linear-type printing pattern was adopted for printing the IGZO channel layer. Compared to dot array printing patterns (4 × 4 and 5 × 5 dot arrays), the linear-type pattern resulted in the formation of a relatively thin and uniform IGZO channel layer. Also, to improve the subthreshold characteristics and low-voltage operation of the device, a high-k and thin (~10 nm) SAO film was used as the gate dielectric layer. Compared to the devices with SiO2 gate dielectric, the inkjet-printed IGZO TFTs with SAO gate dielectric exhibited substantially high field-effect mobility (30.7 cm2/Vs). Moreover, the subthreshold slope and total trap density of states were also significantly reduced to 0.14 V/decade and 8.4 × 1011/cm2·eV, respectively.

    关键词： metal-oxide semiconductors,thin-film transistors,high-k dielectric,high mobility,inkjet printing

    更新于2025-11-14 15:19:41

  • Implementing Inkjet-Printed Transparent Conductive Electrodes in Solution-Processed Organic Electronics

    摘要： Through the use of solution-based materials, the field of printed organic electronics has not only made new devices accessible, but also allows the process of manufacture to move toward a high throughput industrial scale. However, while solution-based active layer materials in these systems have been studied quite intensely, the printed electrodes and specifically the transparent conductive anode have only relatively recently been investigated. In this progress report, the use of metal nanoparticles within printed organic electronic devices is highlighted, specifically their use as replacement of the commonly used indium tin oxide transparent conductive electrode within organic photovoltaics (OPVs) and organic light emitting diodes (OLEDs). A cross fertilization between the applications is expected since an OPV device is essentially an inversely operated OLED. This report aims to highlight the use of inkjet-printed nanoparticles as cost-effective electrodes for printed optoelectronic applications and discusses methods to improve the conductive and interfacial properties. Finally, in an outlook, the use of these types of metal nanoparticle inks to manipulate light management properties, such as outcoupling, in the device is investigated.

    关键词： embedded silver and copper grid,metal nanoparticle ink,inkjet-printed electronics,transparent electrode,solution-processed optoelectronics

    更新于2025-09-23 15:23:52

  • Ultrathin Fully Printed Light-Emitting Electrochemical Cells with Arbitrary Designs on Biocompatible Substrates

    摘要： Organic electronic devices are often highlighted in terms of cost-efficient solution processing and potential printability. However, few studies are reporting truly full-solution-processed devices taking into account the electrodes as well as all other layers. This results in a production method that only partially benefits from the cost efficiency of solution processing and that still depends on costly and elaborate techniques like evaporation and/or lithography. This lack of knowledge is addressed by presenting a truly fully printed light-emitting electrochemical cell on ultraflexible parylene C substrates usable for conformable electronics. All device parts are fabricated by industrial relevant printing-techniques under ambient atmosphere. Inkjet printing is used for the structuring of the device layout and is therefore able to implement and create arbitrary designs. Further layers are produced by blade coating which is well suited for the coating of large areas. The devices show stable operation at a luminance higher than 100 cd m?2 for 8.8 h, can reach a maximum brightness of 918 cd m?2, and exhibit a turn-on time of 40 s to reach 100 cd m?2. Moreover, biocompatible and biodegradable materials are utilized to allow potential applications in life science and bioelectronics.

    关键词： fully printed electronics,light-emitting electrochemical cells,parylene,inkjet,bioelectronics,digital printing,conformable electronics

    更新于2025-09-23 15:23:52

  • Gas sensing characteristics of the FET-type gas sensor having inkjet-printed WS2 sensing layer

    摘要： This paper investigates the gas sensing characteristics of the MOSFET-type sensor having an inkjet-printed WS2 sensing layer. The drain current of the gas sensor increases when NO2 gas is injected into the test chamber since NO2 gas is an oxidizing gas that extracts electrons from the sensing layer. On the contrary, the drain current decreases when H2S gas is injected into the test chamber since H2S gas is a reducing gas that donates electrons to the sensing layer. In both cases, the change of the drain current increases as the gas concentration increases. However, for other gases (NH3 and CO2), the gas sensor has a small change of the drain current. The responses of the gas sensor to 10 ppm NO2, H2S, NH3, and CO2 gases are 15.20%, 7.18%, 1.66%, and 3.02%, respectively. Therefore, the WS2 sensor has a high selectivity for NO2 gas among the four target gases.

    关键词： MOSFET,Gas sensor,Inkjet printing,WS2

    更新于2025-09-23 15:23:52

  • Inkjet Printed hybrid light sensors based on Titanium Dioxide and PEDOT:PSS

    摘要： We demonstrate photodetectors sensitive to ultraviolet light entirely developed by means of inkjet printing technique and based on titanium dioxide and PEDOT:PSS. Devices have a lateral architecture and are realized on a plastic substrate, thanks to the low thermal budget production process. Pure titania devices behave as standard photodetectors, increasing their conductivity by more than 4 orders of magnitude upon UV light exposure. Bilayers of PEDOT:PSS and titania show an inverted behavior, with a high conductivity in the dark which drops by 7 orders of magnitude upon light exposure: this is likely due to the fast recombination of PEDOT:PSS holes with photogenerated TiO2 electrons. The series connection of pure TiO2 and of PEDOT:PSS/TiO2 bilayer is suggested as the basis for the development of low-power, complementary–like, photosensitive voltage dividers.

    关键词： photosensitive voltage divider,inkjet printing,PEDOT:PSS,inverted,UV detector,titanium dioxide,negative photoconductivity,photoresistor

    更新于2025-09-23 15:23:52

  • Inkjet-printed silver as alternative top electrode for lead zirconate titanate thin films

    摘要： In the present work, we describe direct patterning of silver top electrodes on polycrystalline Pb(Zr0.53Ti0.47)O3 (PZT) thin films via inkjet printing. The films were first deposited on platinized silicon via chemical solution deposition. Individual nanosilver ink droplets were then printed on the PZT surface to create round top electrodes with tunable diameter from 75 to 93 mm. Printing parameters and strategy were optimized for deposition of homogeneous electrodes. High quality of the printed silver electrodes sintered at 350 °C is confirmed via measurements of the direct piezoelectric response and polarization loops of PZT thin films, whose results are comparable to the ones obtained for sputtered platinum top electrodes, with e31,f = -4.1 C m-2 and Ec ~55 kV cm-1, Pr ~20 mC cm-2.

    关键词： Piezoelectricity,Thin films,Silver electrodes,Inkjet printing,Ferroelectrics

    更新于2025-09-23 15:23:52

  • Highly Responsive PEG/Gold Nanoparticle Thin Film Humidity Sensor via Inkjet Printing Technology

    摘要： In this study, a highly responsive humidity sensor is developed by printing gold nanoparticles (GNP) grafted with a hygroscopic polymer. These GNPs are inkjet printed to form a uniform thin film over an interdigitated electrode with controllable thickness by adjusting the printing parameters. The resistance of the printed GNP thin film decreases significantly upon exposure to water vapor and exhibits a semi-log relationship with relative humidity (RH). The sensor can detect RH variations from 1.8% to 95% with large resistance changes up to 4 order of magnitude with no hysteresis and small temperature dependence. In addition, with a thin thickness, the sensor can reach absorption equilibrium quickly with response and recovery times of ≤1.2 and ≤3 seconds, respectively. The fast response to humidity changes also allows the GNP thin film sensor to distinguish signals from intermittent humidification/dehumidification cycles with a frequency up to 2.5 Hz. The printed sensors on flexible substrates show little sensitivity to bending deformation and can be embedded in a mask for human respiratory detection. In summary, this study demonstrates the feasibility of applying printing technology for the fabrication of thin film humidity sensors, and the developed methodology can be further applied to fabricate many other types of nanoparticle based sensor devices.

    关键词： inkjet printing,respiratory monitoring,Humidity sensor,gold nanoparticle,poly(ethylene glycol)

    更新于2025-09-23 15:23:52