Article
Materials Science, Multidisciplinary
Mengran Liu, Wentao Tian, Chao Liu
Summary: Insufficient hole injection and current nonuniformity caused by the p-AlGaN hole injection layer are addressed by proposing an Al-linearly-decreasing AlGaN PN junction to replace the conventional p-AlGaN HIL with a constant Al component. The proposed structure enhances hole injection efficiency and improves current uniformity by modulating the barrier height and resistance in the p-AlGaN HIL. The DUV LED with the proposed ALD AlGaN PN junction structure achieves enhanced EQE and improved current uniformity, showing promise for high-performance DUV LEDs.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Physics, Applied
Xiaoyang Chen, Jie Zhang, Binbin Huang, Yun Liu, Ping Yu
Summary: This study successfully suppressed multiple electron injection mechanisms occurring under high electric fields and high temperatures using an ultra-thin artificial dead-layer, thus protecting the stability of ferroelectric thin films.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Computer Science, Hardware & Architecture
Qiaoli Niu, Xudong Pan, Xiaomeng Duan, Weijie Qi, Ling Zhang, Yao Xu, Wenjin Zeng, Ruidong Xia, Yonggang Min
Summary: Enhancing the injection of electron by inserting sodium compounds between EML and EIL effectively improved the performance of PLEDs, leading to a significant increase in current efficiency. The migration of Na+ was found to be a key factor contributing to the performance enhancement of PLEDs.
Article
Materials Science, Multidisciplinary
Georg Linz, Sebastian Bernhard Rauer, Lucas Stuewe, Daniel Josef Bell, Markus Rausch, Matthias Wessling
Summary: By depositing silver films on the sidewalls of microfluidic channels, a highly homogeneous electrical field can be achieved in the case of a rectangular channel, overcoming the limitations of conventional electrode integration methods while enabling optical analysis methods.
ADVANCED MATERIALS TECHNOLOGIES
(2021)
Article
Physics, Applied
Yu-Chen Chang, Ying-Chung Chen, Ruei-Ting Huang, Yu-Ting Chen, Su-Ciang Chen, Chien-Chuan Cheng, Cheng-Fu Yang
Summary: This paper investigates the fabrication process of solidly mounted resonator (SMR) devices using aluminum nitride (AlN) and gallium-doped aluminum nitride (AlGaN) films. The crystalline structure and surface properties of the films were characterized by XRD, EDS, and SEM analyses. The frequency response of the fabricated SMR devices was measured using a network analyzer.
MODERN PHYSICS LETTERS B
(2022)
Review
Engineering, Electrical & Electronic
Andrew Kim, Jatis Kumar Dash, Pawan Kumar, Rajkumar Patel
Summary: Carbon quantum dots have excellent optical properties that can enhance the performance of solar technologies, such as luminescent solar concentrators and photovoltaic cells. They are transparent, easy to control in terms of absorption/re-emission spectra, and can reduce costs while improving performance.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Review
Chemistry, Medicinal
Simona Petroni, Irene Tagliaro, Carlo Antonini, Massimiliano D'Arienzo, Sara Fernanda Orsini, Joao F. Mano, Virginia Brancato, Joao Borges, Laura Cipolla
Summary: Chitosan is a marine-origin polysaccharide with diverse applications in various sectors. This review provides an overview of chitosan properties, chemical functionalization, and the innovative biomaterials derived from it. The focus is on the preparation of chitosan-based biomaterials and their use in the biomedical field, aiming to inspire further exploration and development of advanced biomedical devices. Selected works from the last 10 years will be considered.
Article
Chemistry, Physical
Dohee Lee, Andrey S. Sokolov, Boncheol Ku, Yu-Rim Jeon, Du Ho Kim, Hyeon Tae Kim, Gun Hwan Kim, Changhwan Choi
Summary: The study investigates the role of inserting a diffusion limiting layer in a synapse device operated by the migration of metal cations to improve linear conductance change characteristics. By inserting a thin SiO2 layer at the Cu/ZrO2 interface, the random diffusion of Cu ions is effectively mitigated, leading to improved multi-level RESET switching characteristics and enhanced linearity of conductance with the number of pulses. Various synaptic characteristics such as potentiation, depression, short-term to long-term memory transition, pulse-paired facilitation, post-tetanic potentiation, and spike timing dependent plasticity were successfully emulated.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Gunjan Sharma, Ritu, A. M. Quraishi, Sandhya Kattayat, Smitha Josey, S. Z. Hashmi, Mohammed Ezzeldien, Suman Lata Tripathi, P. A. Alvi
Summary: In this article, the energy band structure of the Alq(3)/TAZ:Ir(ppy)(3)-BCP/HMTPD OLED has been optimized to understand the mechanism of light generation. The optimized OLED is an appropriate flexible light source for the emission of photons with a wavelength of around 560 nm.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Chemistry, Physical
Chengcheng Xing, Yan Lei, Manying Liu, Sixin Wu, Weiwei He, Zhi Zheng
Summary: Cu-based thin films are ideal absorbing layer materials for new-generation thin-film solar cells, with advantages such as environmentally friendly components, low cost, and simple manufacturing process. Among various Cu-based materials, copper indium gallium selenide (CIGS) thin-film solar cells have the highest photoelectric conversion efficiency and have been extensively researched. Efficient materials and device design, as well as a deep understanding of the photophysical mechanisms, are crucial for advancing Cu-based thin-film solar cells.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Eva De Leo, Aurelio A. Rossinelli, Patricia Marques-Gallego, Lisa V. Poulikakos, David J. Norris, Ferry Prins
Summary: Linear gratings patterned on the surface of cQD thin films enhance the outcoupling of emission, resulting in bright and saturated colors. By adjusting the periodicity and orientation of the gratings, active color tuning of the thin-film emission is achieved.
Article
Nanoscience & Nanotechnology
Tao Wang, Stefano Brivio, Elena Cianci, Claudia Wiemer, Michele Perego, Sabina Spiga, Mario Lanza
Summary: This study fabricates RS devices based on a TaOx/HfO2 bilayer stack and improves their switching performance and reliability by modifying the structure of the oxide.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Energy & Fuels
H. Renuka, Prasanth K. Enaganti, B. Harihara Venkataraman, Kannan Ramaswamy, Souvik Kundu, Sanket Goel
Summary: Ferroelectric Ti-doped BiFeO3 (BFTO) heterojunction photovoltaic (PV) cells have been developed for underwater PV applications, showing promising performance and efficiency in solar energy harvesting underwater. The heterojunction PV device outperformed single-junction PVs underwater, demonstrating great potential for various low-power marine-based sensing applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Optics
Mahdiyar Nouri Rezaie, Shahram Mohammadnejad, Shabnam Ahadzadeh
Summary: The review paper discusses various hybrid inorganic/organic light-emitting diodes (I/O LEDs) based on zinc oxide (ZnO) and conjugated polymers, analyzing their structural, electrical, and optical characteristics and applications. Optoelectronic features of these hybrid LEDs are influenced by n-type ZnO nanostructures, and their electroluminescent intensity can be enhanced by selecting suitable p-type conjugated polymers or adding dopants. Challenges, comparisons, and future prospects of these hybrid LEDs, including the use of nanotubes, quantum dots, and perovskite layers, have also been explored.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
T. Kavinkumar, Selvaraj Seenivasan, Amarnath T. Sivagurunathan, Yongchai Kwon, Do-Heyoung Kim
Summary: The rational design and development of novel electrode materials with promising nanostructures can effectively improve supercapacitive performance. By using atomic layer deposition, high-performance electrode materials were developed, showing excellent specific capacity and cycling stability. The demonstrated potential of ALD in next-generation supercapacitors is highlighted by the high energy density and exceptional capacity retention of the assembled supercapattery cell.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Jianxu Hu, Peter B. Wyatt, William P. Gillin, Huanqing Ye
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2018)
Article
Physics, Condensed Matter
Joanna Borowiec, William P. Gillin, Maureen A. C. Willis, Filippo S. Boi, Y. He, J. Q. Wen, S. L. Wang, Leander Schulz
JOURNAL OF PHYSICS-CONDENSED MATTER
(2018)
Article
Multidisciplinary Sciences
J. X. Hu, S. Karamshuk, J. Gorbaciova, H. Q. Ye, H. Lu, Y. P. Zhang, Y. X. Zheng, X. Liang, I. Hernandez, P. B. Wyatt, W. P. Gillin
SCIENTIFIC REPORTS
(2018)
Article
Physics, Applied
Engren Liu, Joanna Borowiec, Lin J. Jun Sun, Marek Konop, Mohammad M. Rahman, Ayoub Taallah, Filippo S. Boi, William P. Gillin
APPLIED PHYSICS LETTERS
(2019)
Article
Engineering, Environmental
Joanna Borowiec, Weizheng Liang, Filippo S. Boi, Yi He, Shan L. Wang, William P. Gillin
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Optics
Hong-Fei Li, Xiao-Qi Liu, Chen Lyu, Jelena Gorbaciova, Li-Li Wen, Guo-Gang Shan, Peter. B. Wyatt, Huan-Qing Ye, William P. Gillin
LIGHT-SCIENCE & APPLICATIONS
(2020)
Article
Multidisciplinary Sciences
Zhichao Weng, William P. Gillin, Theo Kreouzis
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Multidisciplinary
Joanna Borowiec, Mengren Liu, Weizheng Liang, Theo Kreouzis, Adrian J. Bevan, Yi He, Yao Ma, William P. Gillin
Article
Materials Science, Multidisciplinary
Zhichao Weng, William P. Gillin, Theo Kreouzis
Summary: This study found that the symmetry of magnetoconductance can be broken in the presence of a nonlinear gradient magnetic field, especially in the ultra-weak magnetic field range. The asymmetry in magnetoconductance is sensitive to both the magnitude and direction of the nonlinear gradient magnetic field, and the modeled results are consistent with experimental observations. This work sheds light on the origin of asymmetric magnetoconductance and warns researchers about the potential impact of nonlinear gradient magnetic fields on magnetoconductance measurements.
ORGANIC ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Chen Lyu, Hongfei Li, Shufang Zhou, Guangfeng Liu, Peter B. Wyatt, William P. Gillin, Huanqing Ye
Summary: Intense organic neodymium emission with narrow line width and near-infrared emission equivalent in intensity to organic semiconductor emitting material is achieved through efficient sensitization effect from a composite organic sensitizer. The performance is optimized at high concentrations of Nd3+ ions, providing a quantum efficiency of about 40%. The material system is suitable for thin films compatible with integrated optics applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Zhichao Weng, Sebastian C. Dixon, Lok Yi Lee, Colin J. Humphreys, Ivor Guiney, Oliver Fenwick, William P. Gillin
Summary: Graphene is considered as a promising material to replace Indium Tin Oxide (ITO) due to its high electrical conductivity, but a low-cost and scalable fabrication method is required for producing graphene with comparable performance to ITO. This study demonstrates the potential for graphene to be used as anodes in OLED devices, showing identical electrical and optical performances to conventional ITO anodes.
ADVANCED OPTICAL MATERIALS
(2022)
Correction
Materials Science, Multidisciplinary
Hongfei Li, Xiaoqi Liu, Chen Lyu, Feng Ma, Huanqing Ye, Peter. B. Wyatt, William P. Gillin
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Hongfei Li, Xiaoqi Liu, Chen Lyu, Feng Ma, Huanqing Ye, Peter. B. Wyatt, William P. Gillin
Summary: By the sensitization effect of metallophthalocyanines showing similar to 980 nm emission to an erbium complex, a remarkably long average lifetime of 1.05 ms and an optimal PLQY of 13% with a sensitization efficiency of 81 for the Er3+ 1.54 mu m emission are obtained in a perfluorinated organic erbium co-doped system.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Chen Lyu, Hongfei Li, Peter B. Wyatt, William P. Gillin, Huanqing Ye
JOURNAL OF MATERIALS CHEMISTRY C
(2020)
Article
Multidisciplinary Sciences
Zhichao Weng, William P. Gillin, Theo Kreouzis
SCIENTIFIC REPORTS
(2019)
