Review
Instruments & Instrumentation
Haonan Chen, Jingzhen Li, Shengzhu Cao, Wenjie Deng, Yongzhe Zhang
Summary: This review summarizes the operational principles of Indium Arsenide (InAs) nanowire photodetectors under different light conditions and the various approaches designed to optimize their performance. The exceptional optical and electrical characteristics of InAs nanowires make them potential candidates for next-generation optoelectronic devices. However, the surface states and defects of InAs nanowires lead to complex photoresponse mechanisms under different illumination conditions, thus greatly affecting their performance. Various approaches, including surface passivation, doping, and construction of heterojunctions, have been proposed to enhance their performance. This review categorizes and discusses these techniques, highlighting their advantages, limitations, and future prospects.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Green & Sustainable Science & Technology
Yin Zhang, Guomin Zhao, Lu Gan, Hailan Lian, Mingzhu Pan
Summary: A novel S-doped carbon nanosheet (SCN)/ZnO composite photocatalyst was synthesized and showed outstanding photocatalytic performance for organic pollutants, high reusability, and stability. This study provides a highly efficient visible-light photocatalyst for environmental purification.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Zheng Chen, Yuanxing Fang, Long Wang, Xiaoxiao Chen, Wei Lin, Xinchen Wang
Summary: The study demonstrates the potential of Co-doped ZnO nanorods as a noble-metal-free photocatalyst for efficient water splitting under visible light illumination. The material shows a remarkable performance with high quantum yields, suggesting its promising application in harnessing sunlight for advanced photocatalytic processes.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Optics
Fatemeh Abbasi, Fahimeh Zahedi, Mohammad Hasan Yousefi
Summary: In this study, different concentrations of Ni-doped ZnO nanostructures were successfully prepared and evaluated. The incorporation of Ni into ZnO changed the shape of nanostructures and caused a blue shift in UV-visible spectra. UV photodetectors based on ZnO: Ni samples showed improved photoresponse time, with the sample doped with 7% Ni exhibiting the highest response rate.
OPTICS COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Sulakshana Shenoy, Kartick Tarafder, Kishore Sridharan
Summary: The study reported the photocatalytic activity of NiAg NPs embedded on hierarchical ZnO structures, showing that the synergistic effect of the bimetallic NPs on ZnO led to enhanced photocatalytic performance. Experimental and computational results confirmed the improved photocatalytic activity of NiAg-ZnO.
JOURNAL OF MOLECULAR STRUCTURE
(2021)
Article
Chemistry, Multidisciplinary
Fang Wang, Zhenzhou Zhu, Jia Guo
Summary: ZnO/N doped g-C3N4 composite photocatalysts were prepared for degradation of antibiotics in pharmaceutical wastewater, showing better performance than individual ZnO or NCN. The study highlights the possibility of designing high-performance photocatalysts for antibiotics degradation in wastewater.
Article
Materials Science, Multidisciplinary
Jun Hyung Jeong, Sungho Park, Byung Jun Kim, Su Been Heo, Tae Yeon Kim, Jae Seung Shin, Jong Hun Yu, Jin Hyun Ma, Min Gye Kim, Seong Jun Kang
Summary: By doping ZnO with Li, controlling the amount of oxygen vacancies, the photoresponsivity of oxide semiconductors to visible light is enhanced. The Li-doped ZnO TFTs exhibit improved electrical behavior, with high field-effect mobility and high on/off ratio.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Engineering, Environmental
Alejandro Bembibre, Majdi Benamara, Mokhtar Hjiri, Elvira Gomez, Hatem R. Alamri, Ramzi Dhahri, Albert Serra
Summary: The study explores the efficient mineralization of tetracycline antibiotics using Ca-doped ZnO nanopowders under LED visible light and ultrasound irradiation. The catalyst exhibited high efficiency, reusability, and minimal sonophotocorrosion, especially in natural waters' pH range.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Yifan Yao, Qi Ou, Kuidong Wang, Haijun Peng, Feier Fang, Yumeng Shi, Ye Wang, Daniel Iglesias Asperilla, Zhigang Shuai, Paolo Samori
Summary: This study demonstrates the successful creation of efficient organic photodetectors with high near-infrared photoelectric response using unconventional device architecture and ad-hoc supramolecular self-assembly. The optimized devices show ultrasensitive light response with wide bandgap material, outperforming those based on narrow bandgap materials.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Payel Sahu, Debajyoti Das
Summary: This study investigates the photocatalytic activity of ZnO nanorods, Ag2O nanoparticles, and a ZnO/Ag2O heterostructured nanorod photocatalyst under visible light. The results show that the heterostructured nanorod photocatalyst has superior photocatalytic performance compared to individual ZnO and Ag2O. The production of metallic Ag plays a key role in enhancing the photocatalytic degradation of dyes.
Article
Nanoscience & Nanotechnology
Sarasija Das, Arnab Mandal, Md. Tousif Alam, Chandan Kumar, Ayan Sarkar, Satyaprasad P. Senanayak, Sayan Bhattacharyya, Sanjio S. Zade
Summary: In this study, the synthesis, characterization, and optoelectronic investigation of a stable 4n pi dihydrotetraaza-pentacene derivative are described. The compound exhibits exceptional stability and multi-functionality, displaying photoresponsive behavior under visible light, acidochromism in solution, and high hole mobility in the mentioned field-effect measurements.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Shuang Qiao, Haijing Sun, Jihong Liu, Guangsheng Fu, Shufang Wang
Summary: By investigating the photoresponse and pyro-phototronic response of ZnO/Si and ZnO/PEDOT:PSS heterojunctions, it is found that the nanowire length strongly affects the photoresponse, and the optimal length and performance differ significantly between the two heterostructures. Furthermore, the introduction of the pyro-phototronic effect greatly improves the photoresponse and enables an ultra-broadband response range.
Article
Polymer Science
Gengsheng Xu, Fangfang You, Xu Li
Summary: The La-ZnO/g-C(3)N(4) heterogeneous photocatalyst showed significantly enhanced photocatalytic activity for MB dye decolorization under visible light irradiation, with an optimal degradation rate of 8.72 x 10(- 2)min(- 1). The improved efficiency is attributed to the increased interfacial electron-hole separation efficiency through the construction of La-ZnO/g-C(3)N(4) heterogeneous interfaces.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2021)
Article
Environmental Sciences
Sk Emdadul Islam, Da-Ren Hang, Chun-Hu Chen, Mitch M. C. Chou, Chi-Te Liang, Krishna Hari Sharma
Summary: A new ternary C-ZnO/MoS2/mesoporous carbon nanocomposite with enhanced visible-light-driven photocatalytic performance and high photo-corrosion resistance has been successfully prepared in this study. The significant enhancement in photodegradation activity of the hybrid catalysts can be attributed to increased surface area and active reaction sites, boosted surface charge utilization efficiency, and band-gap lowering.
Article
Chemistry, Physical
Praveena Panneer Selvam, Vadamalar Rathinam, A. Arunraj, Ameer Baig Ali Baig, Moganesh Govindhan
Summary: In this study, Mg-doped ZnO nanoparticles were synthesized through a Photon Induced Method (PIM) and were found to be effective in degrading methyl blue dye under sunlight irradiation. XRD analysis showed a significantly reduced crystallite size and a shift in XRD peaks towards a lower 2 theta angle with Mg doping, indicating the replacement of Zn2+ by Mg2+ in the crystal lattice. The composite configuration of Mg-doped ZnO nanoparticles exhibited excellent carrier conductivity and rapid separation of electron-hole pairs, making it a promising method for photodegradation under sunlight irradiation.
Article
Engineering, Geological
Hengshuo Liu, Harianto Rahardjo, Hejun Du, Abdul Halim Hamdany
Summary: In this study, the mechanism of water pressure decay in osmotic tensiometers (OTs) was explored using crosslinked poly(acrylamide-co-acrylic acid) potassium salt (PAM-co-PAAK) as the polymer material. The results showed that the pressure decay of OT was mainly caused by the stress relaxation of the polymer hydrogels, and the standard linear solid (SLS) rheological model was suitable for fitting the decay data. The research also demonstrated that the pressure decay was not due to polymer leakage, as there was no increase in polymer concentration during the decay period.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Jing-Jie Shi, Ting Song, Peng-Tang Qi, Xiao-Yun Wang, Zi-Jiang Liu, Xiao-Wei Sun
Summary: The structural stabilities and half-metallic properties of the new quaternary Heusler alloys OsTiVIn and OsZrVIn under high pressure are investigated using first-principles calculations. The study finds the lowest energy structures in a ferromagnetic state for both alloys. Through calculations of formation enthalpy, phonon dispersion, and elastic constants, it is determined that OsTiVIn and OsZrVIn are thermodynamically, dynamically, and mechanically stable. The calculation of band gap, magnetic moment, and spin polarizability near the Fermi level confirms that OsTiVIn maintains its half-metallic property up to 98 GPa, while OsZrVIn exhibits half-metallic property in the pressure range of 0-100 GPa.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Optics
Huayu Wei, Qi Wei, Fan Fang, Guohong Xiang, Bingyi Tong, Chenlin Wang, Baoqing Sun, Xian Zhao, Mingjie Li, Xiao Wei Sun, Yuan Gao
Summary: This study developed environmentally friendly CQDs with high emission efficiency, achieving optical gain and lasing in the blue spectral region. The alloyed CQDs showed lower threshold and fluence, suggesting potential applications.
LASER & PHOTONICS REVIEWS
(2023)
Article
Chemistry, Physical
Qingqian Wang, Hongmei Zhu, Wei Chen, Junjie Hao, Zhaojin Wang, Jun Tang, Yingguo Yang, Xiao Wei Sun, Dan Wu, Kai Wang
Summary: This study proposes an effective strategy to achieve high CPL activity in quantum dots by introducing 2D chiral perovskite as a chiral source, providing spin polarized carriers through the CISS effect. The as-synthesized QDs/CP composites exhibit dissymmetry factors (g(lum)) up to 9.06 x 10(-3). These findings provide a useful method to achieve CPL in QDs/2D chiral perovskite heterojunctions, which could be promising in spin-optoelectronics application.
Article
Mathematics, Applied
Weidong Li, How Wei Benjamin Teo, Kaijuan Chen, Jun Zeng, Kun Zhou, Hejun Du
Summary: A finite difference-based 3D phase-field model is developed to investigate spherulite growth during the isothermal crystallization of polyamide (PA) 12. The model accurately simulates the morphologies and quantitative characteristics of crystals, validating against experiments. The simulation demonstrates that crystallization temperature affects crystal size and growth rate, and multiple crystals impinge and fill the domain during crystallization, highlighting the capability of the model.
APPLIED MATHEMATICS AND COMPUTATION
(2023)
Article
Engineering, Multidisciplinary
Weidong Li, Marreddy Ambati, Nhon Nguyen-Thanh, Hejun Du, Kun Zhou
Summary: In this study, a fourth-order phase-field modeling of ductile fracture in elastic-plastic materials is conducted using an adaptive isogeometric-meshfree approach. The developed model includes the elastic contribution and the dissipated contribution due to fracture and plasticity in the total energy functional. The coupling between plasticity and fracture is achieved through a degradation function applied to the elastic energy. The model is capable of accurately regularizing sharp cracks while relaxing the mesh size requirements.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Xin-Wei Wang, Xiao-Wei Sun, Ting Song, Jun -Hong Tian, Zi-Jiang Liu
Summary: A comprehensive investigation of the melting curve and P-T phase diagram of CaO, a candidate mineral in the Earth's lower mantle, is conducted through atomistic simulations using newly developed interatomic potentials. The efficiency and reliability of the new potentials under high temperature and pressure are verified. The study also explores the structure, diffusion, and other physical properties of CaO.
Article
Materials Science, Multidisciplinary
Wenbo Liu, Zhengyan Jiang, Pai Liu, Kai Wang, Baomin Xu, Guoping Wang, Xiao Wei Sun
Summary: Quasi-2D perovskite light-emitting devices (PeLEDs) have shown great potential for future displays, but the development of white emission PeLEDs has been challenging. However, a new strategy using blue CdSe/ZnS quantum dots (QDs) as the host material has been proposed to improve the energy transfer efficiency in the PeLEDs. The fabricated PeLEDs exhibited stable voltage, high luminance, and improved efficiency compared to pure Quasi-2D PeLEDs.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jiayun Sun, Zhenwei Ren, Zhaojin Wang, Haoran Wang, Dan Wu, Xiao Wei Sun, Wallace C. H. Choy, Kai Wang
Summary: A facile ionic liquid post-treatment technique is used to modify the solution-processed quasi-2D perovskite film, which enhances the radiative recombination efficiency and the photoluminescence quantum yield of the film. It also improves the hole injection and the external quantum efficiency of the blue PeLED.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Physical
Ronghuan Liu, Bihua Hu, Kai Wang, Baomin Xu, Xiao Wei Sun
Summary: Compared with polycrystalline thin films, perovskite single crystals without grain boundaries have better photovoltaic performance and stability. A green and low-cost airflow-assisted growth method has been developed for the synthesis of large quantities of high-quality and dispersed CsPbBr3 single-crystal wires under ambient conditions. This method shows great potential for optoelectronic applications and may facilitate the research of all-inorganic perovskite single crystals.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Physics, Applied
Guohong Xiang, Jingrui Ma, Xiangwei Qu, Kai Wang, Hoi Sing Kwok, Xiao Wei Sun
Summary: We present transparent quantum dot light-emitting diodes (QLEDs) with a current focusing structure. By depositing a SiO2 thin film to create the current focusing structure, we achieved significantly increased DC density and luminance, reaching values of over 8700 mA/cm(2) and 360,000 cd/m(2) respectively. The impact of SiO2 thickness and aperture width on emission spectra and current densities was investigated. The current focusing design demonstrates its effectiveness and potential application in other planar LED devices.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Mechanical
Zhi Hui Koh, Kaijuan Chen, Hejun Du, Jun Zeng, Kun Zhou
Summary: Multi-Jet-Fusion (MJF) is a promising powder-based additive manufacturing technique for high-volume manufacturing. This study investigated the physical and mechanical properties of MJF-printed polyamide 12 (MJF PA12) specimens under different storage conditions and build orientations. The findings revealed that moisture absorption led to a decrease in glass transition temperature in specimens stored under ambient conditions, indicating aging. The change in mechanical properties was more significant for ambient-stored specimens, and build orientation had no significant impact on moisture absorption and mechanical properties. An artificial neural network was also used to predict the mechanical properties of MJF PA12 specimens under the influence of physical aging, humidity, and build orientations, which could assist in structure and risk assessment before printing.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Guanding Mei, Xiangtian Xiao, Sajjad Ahmad, Hong Lin, Yangzhi Tan, Kai Wang, Xiao Wei Sun, Wallace C. H. Choy
Summary: This study demonstrates the importance of microcavity design for improving the light extraction efficiency of Perovskite light-emitting diodes (PeLEDs). The experiment shows that a high-efficiency horizontal dipole in the microcavity is the key to improving the efficiency.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Physics, Applied
Wei He, Mingyuan Huang, Xiaowei Sun
Summary: This paper presents a numerical analysis of the topological valley kink states in a two-dimensional photonic crystal, focusing on both zigzag and armchair domain walls. By manipulating the triangular holes in a honeycomb structure, inequivalent valleys were created in the momentum space. The results showed that both the zigzag and armchair interfaces can support topologically protected valley kink states, providing potential applications for valley waveguides in integrated photonics.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Optics
Phil Surman, Changxiong Zheng, Chaojian Zhang, Zhenwei Yao, Xiaochuan Yang, Wenwei Xu, Xiao Wei Sun
Summary: The availability of high-resolution display panels has made glasses-free 3D displays a viable mainstream commercial product. This paper discusses the measurement of multiview 3D displays that use a slanted lenticular screen to control light directions. Understanding the image depth of field is important, in addition to the usual parameters. The aim of the paper is to describe general theory and procedure, and not the measurement of specific displays.
