Article
Physics, Applied
Fengling Zhang, Conglong Chen, Kuidong Wang, Haijuan Zhang, Jie Chen
Summary: The study found that some transparent conductive oxides have fast optical response speeds, influenced by electron-phonon scattering rates; resonant intraband excitation revealed that the recovery of transient nonlinear response in indium tin oxide is 20 times faster than in gold; the research provides new insights into the theoretical description of ultrafast quasi-particle interactions in metals and semiconductors.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Depanshu Varshney, Jai Prakash, Gautam Singh
Summary: This article investigates the alignment of liquid crystal (LC) molecules on the desired substrate using the noncontact-based technique. The study demonstrates the achievement of various alignment modes (homogeneous and homeotropic) by dispersing indium tin oxide (ITO) nanoparticles (0.25 wt% and 1 wt%) in an ITO sample cell without an alignment layer. The tunability in alignment is attributed to the interaction between ITO nanoparticles and their arrangements on the substrate.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Physical
Depanshu Varshney, Jai Prakash, Gautam Singh
Summary: In this article, the researchers investigate the influence of indium tin oxide (ITO) nanoparticles on the macroscopic molecular arrangement of a nematic liquid crystal material. They observe the dispersion and miscibility of ITO nanoparticles in the liquid crystal phase and study the dielectric parameters of the composites. The results show that the concentration of ITO nanoparticles affects the dielectric permittivity and relaxation frequency, as well as the clearing temperature of the liquid crystal material.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Engineering, Electrical & Electronic
Chih-Yao Chang, Chun-Ta Hsu, Yao-Luen Shen, Tian-Li Wu, Wei-Hung Kuo, Suh-Fang Lin, Chih-Fang Huang
Summary: A fully transparent AlGaN/GaN HEMT (FT-HEMT) with indium-tin-oxide (ITO) as a transparent electrode was fabricated, showing high field-effect mobility and current density. The transmittance for a fabricated chip was over 70% in the visible range of 400 - 700 nm, demonstrating great potential for transparent and/or flexible electronics and optoelectronic devices.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Metallurgy & Metallurgical Engineering
Charlotte Fortin-Lecomte, Lan-Huong Tran, Genevieve Rioux, Lucie Coudert, Jean-Francois Blais
Summary: The present study evaluated the efficiency of nine ion-exchange resins for recovering indium from spent LCD screens. The results showed that the Lewatit VP OC 1026 resin had a high selectivity for indium, and could effectively fix and elute the metal. The final indium solution obtained had a high concentration of indium and low levels of impurities.
Article
Chemistry, Multidisciplinary
Xuezhen Gao, Zhiyong Cao, Junshen Liu, Beibei Zhang
Summary: In this study, an adsorbent CM-HPEI-HD-1 was prepared by modifying the weakly acidic macroporous resin HD-1 with hyperbranched polyethyleneimine (HPEI) and sodium chloroacetate. The adsorption performance of CM-HPEI-HD-1 for In(iii) in the hydrochloric acid system was investigated and it showed a maximum adsorption capacity of 97.78 mg g(-1) at 35 degrees C. The cyclic experiments demonstrated that the adsorption performance of CM-HPEI-HD-1 remained unchanged after five adsorption-desorption cycles. The adsorbent also exhibited better adsorption performance for In(iii) compared to Sn(ii). Based on XRD and XPS analysis, the adsorption mechanism of In(iii) on CM-HPEI-HD-1 was found to involve interaction with carboxyl and amine groups.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Optics
Guanhao Liu, Zhiyi Li, Xiaoxiao Hu, Yuanyuan Qin, Chun-Sing Lee, Dongqi Chen, Lingxue Wang, Jianjun Liu, Pengfei Wang, Yong-Jin Pu, Ying Wang
Summary: This study demonstrates highly efficient and stable OLEDs with thicknesses of over 1 mu m and low operating voltages. MoO3/SimCP2 is used as a hole-injection layer and a thick layer of TAPC is used as a hole-transporting layer. A thin layer of HAT-CN is incorporated to suppress electron leakage. The research paves the way for large-area OLED-based displays and lighting with high production yields.
Article
Engineering, Chemical
Jianchun Qin, Shunyan Ning, Jianing Xu, Fei Guo, Zengyuan Li, Yuezhou Wei, Gjergj Dodbiba, Toyohisa Fujita
Summary: This study investigated the adsorption behavior of tin (Sn) in the one-step separation process using a macroporous silica-based adsorbent. The results showed that D2EHPA/SiO2-P exhibited significant adsorption selectivity for Sn(IV) and achieved adsorption equilibrium within 10 minutes. The adsorption process was a homogeneous monolayer chemisorption, with the O-H bond in D2EHPA participating in bonding with Sn(IV) ions. The desorption process was influenced by the O-H bond in NaOH.
SEPARATION AND PURIFICATION TECHNOLOGY
(2022)
Editorial Material
Optics
Nathaniel Kinsey
Summary: The article explores the impact of momentum on linear optical processes in near-zero-index materials.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Chao Zhang, Kewei Liu, Qiu Ai, Xuan Sun, Xing Chen, Jialin Yang, Yongxue Zhu, Zhen Cheng, Binghui Li, Lei Liu, Dezhen Shen
Summary: A fully transparent metal-semiconductor-metal (MSM) solar-blind UV photodetector with embedded indium-tin-oxide (ITO) electrodes based on Ga2O3 films was designed and constructed for the first time. The device exhibits ultra-low dark current, high rejection ratio, high specific detectivity, and large responsivity, surpassing other reported transparent UV photodetectors. The excellent solar-blind photodetection performance is attributed to the strong and uniform electrical field in β-Ga2O3 and the high quality of the films. This finding paves the way for high-performance fully transparent Ga2O3 solar-blind UV photodetectors with great potential in future transparent electronics applications.
MATERIALS TODAY PHYSICS
(2023)
Article
Optics
Hou Shaodong, Ma Zhijian, Yang Junbo, Zhang Min, Yan Peiguang, Ruan Shuangchen
Summary: A fiber component serving as a WDM, OC, and mode-locker was proposed and demonstrated in a laboratory setting, achieving specific parameters for an Er-doped mode-locked fiber laser. This is the first demonstration of a mode-locked fiber laser based on a WDM/OC/SA integrated device.
Article
Chemistry, Multidisciplinary
Bhaskar Parida, Saemon Yoon, Dong-Won Kang
Summary: By using a bilayer TE consisting of ITO nanoparticles (ITO-NPs) and Ag nanowires (Ag-NWs) processed in ambient air at room temperature, superior characteristics and higher power conversion efficiency can be achieved compared to sputtered ITO. This new type of TE could pave the way for the development of low-cost, translucent solar cells with quick processing under ambient air at room temperature.
Article
Chemistry, Analytical
Jihun Woo, Jiwoong Kim, Joohoon Kim
Summary: In this study, we report enhanced electrochemiluminescence (ECL) using a closed bipolar electrode (BPE) system modified with catalytic Pt nanoparticles. The system demonstrated sensitive and stable ECL emission under a low driving voltage and exhibited improved sensitivity and stability for bipolar ECL imaging analysis.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Energy & Fuels
Noboru Ohashi, Ryuji Kaneko, Chikako Sakai, Yoko Wasai, Seiji Higuchi, Kenji Yazawa, Hirokazu Tahara, Taketo Handa, Tomoya Nakamura, Richard Murdey, Yoshihiko Kanemitsu, Atsushi Wakamiya
Summary: The internal stress of the indium tin oxide (ITO) layer on thin plastic substrates causes deformation of the substrate, limiting the performance of optoelectronic devices. However, using ITO bilayers composed of an amorphous base layer and a crystalline overlayer can eliminate this deformation. By optimizing the bilayer structure and canceling out the internal stresses, mixed composition metal halide perovskite solar cells with ITO electrodes were successfully fabricated on 4 μm polyethylene naphthalate films.
Article
Materials Science, Ceramics
Takahiro Gunji, Kotoe Nakamura, Ryohei Hayami, Akihisa Aimi, Kenjiro Fujimoto, Kazuki Yamamoto
Summary: A novel recycling system for indium in indium tin oxide (ITO) was established, which successfully synthesized ITO films containing 10 wt% tin oxide with high transparency and resistivity. The system involved the dissolution of indium oxide, chlorination, chelation, and steaming treatment, leading to the synthesis of In(etac)(3) and subsequent film formation.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Jun Hyuk Park, Jong Kyu Kim, Jaehee Cho
Article
Nanoscience & Nanotechnology
Sejoon Oh, Han-Soo Jang, Chel-Jong Choi, Jaehee Cho
Article
Chemistry, Physical
Jun Hyuk Park, Dong Yeong Kim, E. Fred Schubert, Jaehee Cho, Jong Kyu Kim
ACS ENERGY LETTERS
(2018)
Article
Chemistry, Multidisciplinary
Bhishma Pandit, Jaehee Cho
APPLIED SCIENCES-BASEL
(2018)
Editorial Material
Nanoscience & Nanotechnology
Jaehee Cho, Jong Kyu Kim
Article
Nanoscience & Nanotechnology
Dong Yeong Kim, Jeonghyeon Park, Jaehee Cho, Jong Kyu Kim
Article
Physics, Applied
Jaeho Kim, Jaejoon Oh, Jongseob Kim, Jaehee Cho
JAPANESE JOURNAL OF APPLIED PHYSICS
(2020)
Article
Materials Science, Coatings & Films
Dong Yeong Kim, Hyunwoong Kang, Koh Eun Lee, Rak Jun Choi, June Key Lee, Jaehee Cho
Summary: The application of EPA on AlGaN-based DUV LEDs improves their electrical and optical properties, including suppressed leakage currents, lower operation voltages, reduced ideality factors, and enhanced light emission compared to untreated devices.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2021)
Article
Nanoscience & Nanotechnology
Bhishma Pandit, Jaeho Kim, Jaehee Cho
Summary: A graphene Schottky contact was fabricated on an AlGaN/GaN heterostructure and showed an SBH of 0.15 eV, determined through various analytical methods. The result was confirmed through calculation and consideration of the threshold voltage needed to deplete the two-dimensional electron gas under the Schottky contact.
Article
Materials Science, Multidisciplinary
Jaeho Kim, Jaejoon Oh, Jongseob Kim, Jaehee Cho
Summary: By depositing various dielectrics on the surfaces of AlGaN/GaN-based HEMT devices, it was observed that the 2DEG sheet carrier density increased by 30%, leading to improved device performance in terms of output and transfer characteristics. Additionally, the deposition of dielectrics helped suppress current collapse in the HEMT devices.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Bhishma Pandit, Jaehee Cho
Summary: This study fabricates solar-blind deep-UV metal-semiconductor-metal photodetectors based on reduced graphene oxide contacts on AlGaN semiconductors, demonstrating low dark current and fast photoresponse time. Back-side illumination significantly improves the photocurrents and responsivities of the PDs.
Article
Materials Science, Multidisciplinary
Koh Eun Lee, Rak Jun Choi, Hyunwoong Kang, Jong In Shim, Sang-Wan Ryu, Jaehee Cho, June Key Lee
Summary: This paper investigates the electrochemical potentiostatic activation (EPA) method, which can improve the light output power of AlGaN-based UV-C LEDs, enhance internal quantum efficiency, and improve reliability.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
H. Kang, C. C. Kim, J. Cho
Summary: In this study, GaInN blue light-emitting diodes (LEDs) with microstructures of rods and lenses made using direct optical wiring (DOW) technology were presented. These microstructures enable control of the emission pattern or enhancement of light extraction from the LEDs, making DOW LEDs highly attractive for various state-of-the-art LED applications.
JOURNAL OF THE KOREAN PHYSICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Hyunwoong Kang, Dong Yeong Kim, Jaehee Cho
Summary: A lithographic approach based on self-assembled Au nanoparticles is presented for the fabrication of graphene quantum dots (GQDs). The size of GQDs can be controlled through the size of the Au nanoparticles. The GQDs exhibit graphitic characteristics and demonstrate blue shift in optical absorption and photoluminescence as their size decreases.
Article
Chemistry, Multidisciplinary
Jong Won Lee, Jeonghyeon Park, Heera Kwon, Woong-Ki Hong, Jong Kyu Kim, Jaehee Cho
