Review
Chemistry, Multidisciplinary
Amit Kumar, Muhammad Omar Shaikh, Cheng-Hsin Chuang
Summary: The synthesis methods of silver nanowires and their application in transparent conducting electrodes are reviewed in detail, including various synthesis protocols and deposition techniques. Additionally, treatments for enhancing their optoelectronic properties are also discussed.
Article
Chemistry, Physical
Kyunghan Ahn, Ga Hye Kim, Se-Jun Kim, Jihyun Kim, Gi-Seong Ryu, Paul Lee, Byungki Ryu, Jung Young Cho, Yong-Hoon Kim, Joohoon Kang, Hyungjun Kim, Yong-Young Noh, Myung-Gil Kim
Summary: This study reports the synthesis of highly conductive transparent p-type sulfur-doped CuI (CuI:S) thin film using a liquid-iodination method with a thiol additive. The CuI:S film exhibits a remarkably high electrical conductivity and optical transmittance, achieving a record-high figure of merit (FOM) value. The CuI:S electrode is successfully utilized in transparent electronic devices.
CHEMISTRY OF MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Mark Lee, Robert T. Piper, Bishal Bhandari, Julia W. P. Hsu
Summary: Machine learning is used to optimize the spin coating of silver nanowires for transparent conducting electrodes (TCE). Using ML analysis, the desired characteristics of high transmittance and low sheet resistance can be achieved by identifying the appropriate processing parameters.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Se Yun Kim, Weon Ho Shin, Hyun-Sik Kim, Doh Won Jung, Mi-Jeong Kim, Kwanghee Kim, Jong Wook Roh, Sungwoo Hwang, Jongmin Lee, Daejin Yang, Hiesang Sohn, Seong Heon Kim, Changhoon Jung, Eunae Cho, Dong-Jin Yun, Jinhong Kim, Young Jin Cho, Sang-Il Kim, Kyu Hyoung Lee, Chan Kwak, Dong-Su Ko
Summary: This study introduces a rational design and fabrication process for a silver nanowire-based transparent conductive electrode, which significantly improves the electrode performance through hybridization with RuO2 nanosheets and silver nanoparticles. After 200,000 bending cycles at a curvature radius of 1 mm, the resistance change of this hybrid electrode is only 8.8%, making it feasible for use in foldable devices.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Mahesh A. Shinde, Haekyoung Kim
Summary: The study improved the stability and conductivity of AgNWs by applying BTA and TiO2:Cs particles onto AgNW/PET, forming a novel AgNW/BTA/TiO2:Cs/PET structure. It showed exemplary optoelectrical properties and stable electrical performances under different environmental conditions, demonstrating the effectiveness of BTA and TiO2:Cs in enhancing the properties of AgNW films.
MATERIALS TODAY COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Henrik Myja, Zhiqiao Yang, Irene A. Goldthorpe, Alexander J. B. Jones, Kevin P. Musselman, Annika Grundmann, Holger Kalisch, Andrei Vescan, Michael Heuken, Tilmar Kuemmell, Gerd Bacher
Summary: Transition metal dichalcogenide (TMDC) monolayers have emerged as highly promising semiconducting materials for optoelectronic applications, with their direct band gap in the visible to near-infrared spectral range. In this work, transparent light-emitting devices (LEDs) were fabricated using TMDC monolayers and a silver nanowire (AgNW) network as a transparent top electrode. The devices showed good performance with an average transmittance of over 60% in the visible spectral range, emissive areas of several mm(2), and a turn-on voltage of around 3 V.
Article
Engineering, Electrical & Electronic
Takeshi Kamijo, Suzanne de Winter, Pradeep Panditha, Eric Meulenkamp
Summary: The transparent conductive electrode (TCE) is an important component of organic light-emitting diodes (OLEDs). This study explores the use of high-resolution printed metal grids as an alternative to indium tin oxide (ITO). By using a thick doped hole injection layer (HIL), electrical shorts can be prevented and high-quality OLEDs with acceptable leakage current can be achieved. The study also reveals that by using very fine pitch and narrow line width, the luminance of the copper (Cu) grid OLED can potentially match that of an ITO-based OLED.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Quoc Hoan Tran, Duc Thanh Chu, Van Hoan Hoang, Sy Hieu Pham, Philippe Leclere, Thi Thu Hien Nguyen, Duc Huy Tran, Quang Trung Do, Anh Tuan Pham, Duy Cuong Nguyen
Summary: The study showed that using scotch tape on the surface of silver nanowire transparent conductive electrodes can significantly reduce sheet resistance, while maintaining transmittance. This method may improve electrical properties by enhancing contact between AgNWs.
Article
Chemistry, Multidisciplinary
Sy Hieu Pham, Anthony Ferri, Antonio Da Costa, M. M. Saj Mohan, Van Dang Tran, Duy Cuong Nguyen, Pascal Viville, Roberto Lazzaroni, Rachel Desfeux, Philippe Leclere
Summary: This study reports the high performance of transparent conductive electrodes (TCEs) based on silver nanowires (AgNWs) percolation networks. By optimizing the deposition conditions, AgNWs exhibit low sheet resistance and high optical transmittance. Conductive atomic force microscopy measurements reveal low resistivity of individual AgNWs and high current levels within the network. Thin-film electrodes based on AgNWs show great potential for future flexible electronic devices.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Dang Tuyen Nguyen, Duc Thanh Chu, Thi Hong Nhung Nguyen, Thanh Tung Duong, Quang Tri Doan, Duy Cuong Nguyen
Summary: In this study, ultralong silver nanowires were welded onto silver nanowire transparent conductive electrodes to enhance their electrical property. The electrodes were fabricated using the doctor blade method and welded through electroplating. Selective welding was observed at most junctions between the nanowires. The sheet resistance of the electrodes decreased significantly from approximately 210 Omega/mu to around 11 Omega/mu. The performance of the electrodes improved considerably after welding with an increased figure-of-merit value from 32 Omega(-1) to 381 Omega(-1). The best electrode had a sheet resistance of 12.1 Omega/mu, transmittance of 92.3%, and a figure-of-merit value of 381 Omega(-1).
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Applied
Jia-Sheng Tang, Cheng-Ying Lee, Ying-Chih Liao
Summary: A coating method is developed to produce chemical resistant transparent conductive films (TCFs) by mixing ultrasonicated cellulose nanofibers and silver nanowires (AgNWs). The resulting coating shows low sheet resistance, high transparency, excellent adhesion, and remains conductive under harsh conditions. Cross-linking with citric acid further enhances the chemical and mechanical stability of the TCF, making it suitable for optoelectronic applications.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Materials Science, Multidisciplinary
Inge Verboven, Joao Silvano, Ken Elen, Hilde Pellaers, Bart Ruttens, Jan D'Haen, Marlies K. Van Bael, An Hardy, Wim Deferme
Summary: The study demonstrates that ultrasonically spray coating is an excellent printing technique for applying silver nanowires and conductive polymers, forming electrodes with high transparency and conductivity, which have been successfully applied in organic light-emitting diodes.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ja-Yeon Kim, Gwang-Geun Oh, Eunjin Kim, Hyeon-Seung Kim, Gwangsik Hong, Jae-Hyun Ryou, Min-Ki Kwon
Summary: This study successfully improved the efficiency of LEDs by introducing silver nanoparticles into silver nanowire networks, achieving enhanced internal quantum efficiency and light extraction through the coupling of localized surface plasmons.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Multidisciplinary
Shuyue Wang, Xiaoli Wu, Jiaxin Lu, Zhengwu Luo, Hui Xie, Xiaobin Zhang, Kaiwen Lin, Yuehui Wang
Summary: This study proposes a high concentration silver nanowires (AgNWs) conductive ink for inkjet printing, which enables the fabrication of flexible transparent conductive electrodes with low resistance and high transparency. The relationship between the printing layer and the conductivity, as well as the stability and thermal response of the electrode, are investigated. The results demonstrate the potential of inkjet-printed AgNWs-based flexible transparent conductive electrodes for developing flexible functional electronics.
Article
Materials Science, Multidisciplinary
Cheng Chen, Jiayue Zhou, Hongxing Li, Hongxia Lin, Yong Peng, Kehong Wang, Xiaopeng Li
Summary: In this study, femtosecond laser post-processing was used to improve the silver nanowire transparent electrodes by achieving welding between nanowires. This led to a significant reduction in sheet resistance and an improvement in the figure of merit of the electrodes. The energy density of the laser had an impact on the welding efficiency, with excessively high energy density causing nanowire melting. Additionally, laser irradiation had little effect on the transmittance of the electrodes, and the number of effective pulses did not significantly affect the welding efficiency of the nanowires.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Biochemistry & Molecular Biology
Dong-Hyun Baek, Hachul Jung, Jeong Hun Kim, Young Wook Park, Dae Wook Kim, Ho Seob Kim, Seungjoon Ahn, Young-Jin Kim
Summary: The study proposes a manufacturing process using high-pressure steam treatment on PDMS to create porous structures with different viscosities, enhancing the stretchability and mechanical properties of PDMS. The results suggest that patch-type wearable devices based on soft materials have potential for innovative applications.
Article
Materials Science, Multidisciplinary
Soo Jong Park, Kwang Wook Choi, Young Wook Park, Byeong-Kwon Ju
Summary: By utilizing a mixed host structure, blue TADF OLEDs with enhanced efficiency and suppressed efficiency roll-offs were fabricated. The materials mCBP and DPEPO, commonly used as hosts in blue TADF OLEDs, exhibit a trade-off between material stability and efficiency. The mixed-host structure facilitated a maximum efficiency of 18.1% and a significantly higher critical current density compared to the DPEPO device.
Article
Multidisciplinary Sciences
Cheol Hwee Park, Shin Woo Kang, Sun-Gyu Jung, Dong Jun Lee, Young Wook Park, Byeong-Kwon Ju
Summary: Inserting a diffusion layer composed of nano-sized structures of PMMA and a ZnO semi-planarization layer into micro-cavity OLEDs can significantly enhance the external quantum efficiency and reduce the peak shift distance and color coordinate movement distance of the electroluminescence spectra.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Multidisciplinary
Khang Do Gia Hong, Yei-Jin Kang, Ji-Hyeon Oh, Seong-Gon Kim, Young-Wook Park, You-Young Jo, HaeYong Kweon, Horatiu Rotaru
Summary: This study demonstrates that the combination of sericin with gelatin sponge enhances bone regeneration in a streptozotocin-induced type I diabetes animal model.
APPLIED SCIENCES-BASEL
(2021)
Article
Nanoscience & Nanotechnology
Kwang Wook Choi, Cheol Shin, Sungwoo Jun, Soo Jong Park, Yooji Hwang, Jin Ho Kwak, Young Wook Park, Jong-Woong Kim, Byeong-Kwon Ju
Summary: A simple two-layer multi-sensor has been fabricated using a non-vacuum solution process in order to address the issues associated with conventional rigid sensors, with high manufacturing costs and risk of peeling. The sensor has a light-sensitive optical response and minimal damage by external adhesives, making it suitable for use as a touch sensor and light sensor in various fields.
Article
Multidisciplinary Sciences
Shin Woo Kang, Dong-Hyun Baek, Byeong-Kwon Ju, Young Wook Park
Summary: This study reports highly efficient green phosphorescent OLEDs with ultra-thin EMLs, achieving a peak EQE of approximately 24% using Ir(ppy)(3) as the dopant. The result demonstrates that OLEDs with ultra-thin EML structures can achieve ultra-high efficiency.
SCIENTIFIC REPORTS
(2021)
Article
Optics
Cheol Shin, Seungwon Lee, Kwang Wook Choi, Young Hyun Hwang, Young Wook Park, Byeong-Kwon Ju
Summary: This study demonstrates the use of a nanoscale random rubbed structure (nRRS) as an internal scattering layer for OLEDs. The rubbing technique commonly used for liquid crystal alignment is employed to create a random corrugation on the SU-8 polymer surface. The optimized nRRS shows high transmittance and improved efficiency compared to the reference device.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Multidisciplinary
Eun-Jeong Bae, Shin-Woo Kang, Geun-Su Choi, Eun-Bi Jang, Dong-Hyun Baek, Byeong-Kwon Ju, Young-Wook Park
Summary: In this study, a micro-nano hybrid structure for the external light extraction layer was applied to enhance the efficiency of extracting external light from OLEDs. The micro-nano hybrid structure was formed through the reactive ion etching process using O-2 and CHF3 plasma. Experimental and theoretical analyses were conducted to compare the efficiency of different structures. The results showed that the application of the micro-nano hybrid structure improved the external light extraction efficiency by up to 38% and expanded the viewing angle profile of OLEDs. Furthermore, an effective method for enhancing the out-coupling efficiency of OLEDs was proposed by optimizing the micro-nano hybrid structure according to process conditions.
Article
Chemistry, Multidisciplinary
Geun-Su Choi, Shin-Woo Kang, Eun-Jeong Bae, Eun-Bi Jang, Dong-Hyun Baek, Byeong-Kwon Ju, Young-Wook Park
Summary: The study focuses on fabricating a random nanostructure external light extraction composite layer with high-refractive-index nanoparticles, achieving improved external quantum efficiency in OLEDs. By using a low-temperature mask-free process to control the optical properties, the RNSs can reduce waveguide mode and total reflection.
Article
Chemistry, Multidisciplinary
Eun-Jeong Bae, Hyeong-Kyu Maeng, Ji-Soo Shin, Dong-Wook Park, Young-Wook Park, Dong-Hyun Baek
Summary: A micro-sphere PDMS film is proposed to improve the external quantum efficiency (EQE) in OLEDs. The film is fabricated through a specific process and the size and distribution of the micro-spheres play essential roles in improving the performance. Additionally, the film, based on polymeric materials, offers advantages in cost control and large-scale production.
Article
Materials Science, Multidisciplinary
Eun Jeong Bae, Jong Woo Kim, Byeong-Kwon Ju, Dong-Hyun Baek, Young Wook Park
Summary: In this study, a flexible porous film was developed as a light-scattering layer to enhance the external light extraction in OLEDs. The properties of the porous film, including pore penetration depth and surface morphology, were influenced by the viscosity of the PDMS solution. The results showed that although the total transmittance was decreased, the EQE was improved by 30% compared to that of OLEDs without the porous film. This improvement can be attributed to the scattering effect resulting from the difference in refractive indices between the embedded air cavities and porous layer.
ORGANIC ELECTRONICS
(2022)
Article
Nanoscience & Nanotechnology
Seungwon Lee, Jun-Young Park, Jaewon Park, Jian Cheng Bi, Byeongwoo Kang, Young Hyun Hwang, Jiwon Seok, Young Wook Park, Byeong-Kwon Ju
Summary: This study employs exciton diffusion guidance and energy extraction to enhance the optical efficiency and suppress the roll-off characteristics of mixed-host blue TADF OLEDs. The nanopixel array, created by a nanoscale pixel-defining layer (nPDL), separates excitons and polarons, increasing triplet quenching through secure exciton diffusion. Additionally, a corrugated metal cathode structure enables nonradiative energy transfer to surface plasmon polaritons, boosting emission efficiency. The optimized nPDL structure leads to significant improvements in external quantum efficiency, current efficiency, power efficiency, and critical luminance.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Min Keun Kim, Min Ji Ham, Won Rae Kim, Hyung Giun Kim, Kwang Jun Kwon, Seong Gon Kim, Young Wook Park
Summary: This study aimed to evaluate the accuracy of three-dimensional surgical guides and titanium implants in a rabbit model, as well as the surgical outcomes of mandibulectomy and reconstructive surgery. The accuracy of the implants was within the acceptable error range, while the surgical accuracy varied in different measured areas. The angle between the mandibular lower borders showed the most sensitive results, and the distance between the lingual cusps of the first molars represented the most accurate outcomes. The angle between the mandibular lower borders was found to be a good indicator for evaluating reconstructive surgery outcomes.
MAXILLOFACIAL PLASTIC AND RECONSTRUCTIVE SURGERY
(2023)
Article
Nanoscience & Nanotechnology
Cheol Shin, Seungwon Lee, Kwang Wook Choi, Young Hyun Hwang, Young Wook Park, Byeong-Kwon Ju
Summary: In this study, a nanoscale random rubbed structure (nRRS) was evaluated for its application as a scattering layer in OLEDs. The optimized nRRS, fabricated via rubbing, exhibited high transmittance and haze, making it suitable for OLEDs and improving their external quantum efficiency. The optical performance of the nRRS-OLED was predicted through simulation and verified by experimental results.
NANOMATERIALS AND NANOTECHNOLOGY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Yong-Chan Lee, Hong-Bum Sohn, Young-Wook Park, Ji-Hyeon Oh
Summary: This study evaluated the changes in condylar positions after orthognathic surgery using virtual surgical planning via the BOS system. The results showed that the change mainly occurred downward in the y-axis, with slight changes in the x- and z-axes.
MAXILLOFACIAL PLASTIC AND RECONSTRUCTIVE SURGERY
(2022)