Article
Chemistry, Physical
Dan Kuang, Jin Cheng, Xuyang Li, Yan Li, Meng Li, Fangjunpeng Xu, Jianshe Xue, Zhinong Yu
Summary: ZnO/ZnMgO core/shell nanorod arrays, fabricated using hydrothermal and radio frequency magnetron sputtering methods, exhibit significant ohmic contact and high photo-to-dark current ratio, with fast rise and decay times under 254 nm and 365 nm illumination. The core/shell nanostructure facilitates the rapid separation of photogenerated electron-hole pairs and suppresses recombination of carriers, making it a promising candidate for future ultraviolet detection applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiangli An, Bowen Zhang, Chongyang Wang, Zhiyong Zhao, Saisai Zhang, Hari Bala, Zhanying Zhang
Summary: Highly regular TiO2 nanorod array films were synthesized in situ on FTO using a simple hydrothermal method, and ZnO shell layers were grown on the nanorods to form a core-shell structure. The TiO2/ZnO nanocomposites showed enhanced ethanol sensing performances compared to TiO2 nanorods, with a low working temperature, higher sensitivity, and faster response capability. The optimum sensor based on 2c-TiO2/ZnO exhibited a significantly higher response to 50 x 10-6 C2H5OH at 340°C compared to the TiO2 sensor. The improved ethanol sensing mechanism was attributed to the unique nanorod array structure and the heterojunctions between TiO2 and ZnO.
JOURNAL OF MATERIOMICS
(2023)
Article
Energy & Fuels
Yu Tang, Xilong Liu, Yang Chen, Leiyun Han, Dianfeng Dai, Liangyu Liu, Chongtai Wang, Yingjie Hua, Xudong Zhao, Xiaoyang Liu
Summary: This study successfully synthesized NiCo2S4@MoS2 core/shell nanorod arrays and demonstrated their excellent charge storage capacitance and rate performance. The electrode material has high mass loading, can operate at high current density, and exhibits good cycling stability.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Chemical
Xiangbo Feng, Lvwei Sun, Wei Wang, Yuzhen Zhao, Jian-Wen Shi
Summary: A new CdS@ZnO core-shell nanorod array was successfully constructed by atomic layer deposition (ALD) for efficient H2 evolution from photoelectrochemical water splitting. The CdS@ZnO200 obtained after 200 ALD cycles showed a significantly enhanced PEC H2 evolution rate of 21.64 μmol·h-1·cm-2, which was about 9.4 times higher than pristine CdS NRAs. The improved performance could be attributed to the Z-scheme charge transfer mechanism between CdS core and ZnO shell, as well as the reduction of charge carrier transfer resistance due to the close contact between the two semiconductors.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Shahab Razavi, Yiping Zhao
Summary: This study demonstrates that a hybridized plasmonic mode in a compound nanohole structure can be described as a quasi-dipole oscillator. By introducing two nanorods into a nanohole, these two quasi-dipoles can couple and hybridize, resulting in additional transmission peaks. The intensities and separations of these peaks can be controlled by adjusting the incident polarization and modifying the nanorod length. This concept can be extended to predict the behavior of more complex compound configurations, allowing for precise engineering of transmission peaks.
Article
Chemistry, Physical
Mengqi Zhang, Tong Zhou, Hong Li, Qinzhuang Liu
Summary: This study achieved dense ZnO nanorod arrays directly on Al substrate using catalyst-free chemical vapor deposition for the first time. The influence of temperature on the surface topography of ZnO nanostructures was analyzed. Then the ZnO nanorod arrays surface was coated with SiO2 films via pulsed laser deposition. After modifying with stearic acid, the Al/ZnO/SiO2 nanorod arrays showed superhydrophobic properties with a water contact angle of up to 157.9 degrees. Notably, these Al/ZnO/SiO2 nanorod arrays exhibited UV resistance, and the water contact angle remained almost constant under UV light exposure for a long time. The electrochemical measurements showed that ZnO/SiO2 nanorod arrays had an excellent protective effect on metal Al. These results provided a basis for a feasible method for the corrosion protection of metals.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xiaoyu Xie, Ru Wang, Yi Ma, Jinping Chen, Zengliang Shi, Qannan Cui, Zhiyong Li, Chunxiang Xu
Summary: This study presents a strategy of in situ [SO4] modification and heterojunction construction to design photoelectrodes with multicharge-transfer channels for enhanced PEC performance. The core-shell heterojunction of sulfate-functionalized CdS decorated on ZnO nanorod arrays and Ag2S nanoparticles provides active sites for accelerated charge transfer and improved PEC reaction kinetics. The addition of AO suppresses the photocorrosion of CdS and facilitates efficient separation and transportation of photogenerated charge carriers. The optimized photoanode exhibits high PEC performance, with a maximum photocurrent density 7.75 times higher than that of pristine ZnO photoanode under simulated AM 1.5 solar light illumination.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Ajay Kumar, Dipali Nayak, Pooja Sahoo, Barun Kumar Nandi, V. K. Saxena, R. Thangavel
Summary: Highly transparent and self-cleaning ZnO nanorods (NRs) and ZnO@TiO2 core-shell (CS) nanoarrays were fabricated using the sol-gel dip-coating technique. The optimized CS nanoarrays with two dipping cycles display a 2% enhancement of optical transmission compared to the ZnO NRs. Moreover, CS nanoarrays with two shell layers exhibit the highest degree of dye photodegradation efficiency of 68.72% and 91% under sunlight and UV light irradiation, respectively.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
S. Umadevi, P. Prabhakar, Young-Kyu Han, Kugalur Shanmugam Ranjith
Summary: We have developed a nanograined ZnS-GdS shell layer decorated with hierarchical ZnO nanorod arrays to improve visible light photo-electrochemical performance. The introduction of the ZnS-GdS shell layer enhances charge separation efficiency and surface defect states. The resulting ZnO/ZnS-GdS core-shell NR array exhibits higher photoelectrochemical performance and a solar to hydrogen conversion efficiency 14 times higher than pristine ZnO nanorods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Hua-Liang Yu, Li-Qin Liu, Ying-Wu Zhou, Xiao-Ling Xue, Xiao-Hong Yuan, Yao-Guo Shen, Zhi-Qun Liu, Hua-Min Chen, Chun-Lei Huang
Summary: Fabric-based nano semiconductor photocatalysts have attracted much attention recently. In this study, Ag2O/ZnO nanorod (NR)/Al-ZnO p-type/high resistivity/n-type (P-HR-N) heterojunction arrays were used to modify polyester fibers. The Al-ZnO seed layer was sputtered on the fibers and Al doping was employed to change the work function (WF) of the ZnO film. The resulting P-HR-N heterojunction sample showed enhanced photocatalytic performance due to the high and widened built-in electric field (BEF) in the multilayer film.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
G. M. Klemencic, D. T. S. Perkins, J. M. Fellows, C. M. Muirhead, R. A. Smith, S. Mandal, S. Manifold, M. Salman, S. R. Giblin, O. A. Williams
Summary: This study presents evidence of phase slippage in boron-doped nanocrystalline diamond microbridges through electrical transport measurements, despite their three-dimensional macroscopic geometry. The behavior is attributed to the unusual microstructure of the material, which forms an intrinsic Josephson junction array supporting phase slippage across the microbridge. Experimental results demonstrate the ability to deterministically switch between different superconducting states by applying electromagnetic noise pulses, indicating a metastable voltage state in these bridges.
Article
Chemistry, Multidisciplinary
Viviana Maffeis, Dimitri Huerlimann, Agata Krywko-Cendrowska, Cora-Ann Schoenenberger, Catherine E. Housecroft, Cornelia G. Palivan
Summary: This article presents a high-throughput platform based on a geometrically defined array of immobilized catalytic nanocompartments (CNCs) for mimicking multistep signal transduction. The CNCs are patterned using DNA hybridization on a microprinted glass surface to achieve controlled spatial organization and effective communication. The platform offers versatility, robustness, and reusability, making it ideal for the development of responsive and communicative soft matter analytical devices for catalysis and medicine applications.
Article
Multidisciplinary Sciences
Jaya Verma, Yanquan Geng, Jiqiang Wang, Saurav Goel
Summary: We developed a coating system using SiO2@ ZnO core-shell nanospheres in polyurethane media to achieve longevity and sustainability in marine transport. This polymeric coating showed improved surface abrasion resistance, hydrophobicity, and antimicrobial effects. X-ray diffraction, transmission electron microscopy, and other characterization techniques were used to study the mechanical and biological functionality of the coating. The addition of SiO2@ ZnO core-shell nanoparticles to the polyurethane media demonstrated remarkable antimicrobial performance against bacteria, algae, and fungi.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Analytical
Jinyu Huang, Hao Liang, Jiexiong Ye, Dongting Jiang, Yiling Sun, Xuejin Li, Youfu Geng, Jiaqi Wang, Zhengfang Qian, Yu Du
Summary: Au-loaded ZnO sensors were successfully prepared via seed-assisted solvothermal methods, showing excellent performance in detecting HCHO with significantly improved detection limit and response to HCHO.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Fan Ru, Jing Xia, Xuanze Li, Yifan Wang, Ze Hua, Ruiwen Shao, Xuecong Wang, Chun-Sing Lee, Xiang-Min Meng
Summary: In this study, well-aligned single-crystalline ZnO/ZnS core/shell nanorod arrays were successfully obtained by introducing an Al2O3 buffer layer. A rational growth mechanism of the core/shell heterostructure was proposed based on detailed characterization, showing that Al2O3 can effectively improve the optical properties of the ZnO/ZnS heterostructure.
Article
Nanoscience & Nanotechnology
Xiaoqian Li, Yunfei Ren, Xin Wang, Shuangshuang Shao, Hui Li, Liangzhuan Wu, Xuying Liu, Jianwen Zhao
Summary: A universal method was developed to achieve highly dense and uniform SWCNT thin films on different substrates. Fully printed SWCNT TFTs with extraordinary mechanical flexibility and good electrical properties were successfully constructed, as well as paper-based inverters achieving relatively large gains and excellent mechanical flexibility.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Min Li, Ziyu Xiong, Shuangshuang Shao, Lin Shao, Su-Ting Han, Hua Wang, Jianwen Zhao
Summary: Developing multifunctional-integrated photoelectric synaptic devices with a simple structure to mimic eye functions is of great importance. This study reported the research on multimodal photoelectric neuromorphic thin film transistors using sorted semiconducting single-walled carbon nanotubes and lead-free perovskite, showing significant improvement in optical and electrical responses. The synaptic devices can emulate various synaptic functionalities, successfully train an artificial neural network for digit recognition, and demonstrate NOR logic and reproducible flash memory functions under optical and electrical programming stimulations.
Article
Nanoscience & Nanotechnology
Luis Portilla, Jianwen Zhao, Jing Zhao, Luigi G. Occhipinti, Vincenzo Pecunia
Summary: This research demonstrates the fabrication of low-voltage above-threshold sc-SWCNTs TFTs using high-capacitance-density hybrid nanodielectric, which can meet the demand for low-voltage TFT electronics. The use of SAM-based nanodielectrics enables balanced ambipolarity without the need for additional materials.
Article
Materials Science, Multidisciplinary
Shuangshuang Shao, Kun Liang, Xinxing Li, Jinfeng Zhang, Chuan Liu, Zheng Cui, Jianwen Zhao
Summary: A self-confined inkjet printing technology was developed to construct large-area, high-resolution and high-performance metal oxide bilayer TFTs with independent bottom gates. The resulting TFTs showed excellent performance and an NMOS inverter with high voltage gain was demonstrated, showcasing the potential for high-performance printed logic gates and display driving circuits.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Qin Zhang, Yunfei Ren, Zhenguo Wang, Xiaolian Chen, Luis Portilla, Litao Sun, Dongyu Zhang, Jianwen Zhao
Summary: An eco-friendly and fast method was developed to prepare large-area high-performance SWCNT conductive thin films using roll-to-roll (R2R) gravure printing technology. The films exhibited improved mechanical and heating properties, showing potential for application in flexible electronic devices.
FLEXIBLE AND PRINTED ELECTRONICS
(2022)
Article
Chemistry, Physical
Xiaoqian Li, Xin Wang, Jie Deng, Min Li, Shuangshuang Shao, Jianwen Zhao
Summary: Electric double layer (EDL) electrolyte dielectrics with high gate modulation efficiency are of great interest for low voltage and low power consumption portable thin film transistor (TFT) devices and circuits. In this study, fully printed single-walled carbon nanotube (SWCNT) TFTs were fabricated using proton conducting inorganic perhydropolysilazane (PHPS) derivatives as the EDL dielectrics at low frequencies (<1 kHz). The fabricated SWCNT TFTs showed excellent electrical properties, and the precise control of threshold voltage and polarity was achieved by adjusting the printable sc-SWCNT ink concentrations and electron doping technology. Furthermore, fully printed flexible complementary metal oxide semiconductor (CMOS) and CMOS-like inverters based on the prepared SWCNT TFTs exhibited low power consumption, high voltage gain, and relatively large noise margins.
Article
Chemistry, Physical
Wenjing Xu, Min Li, Masayoshi Tange, Liqiang Li, Juncai Hou, Jun Ye, Li Wei, Yuan Chen, Jianwen Zhao
Summary: This study demonstrated the selective enrichment of monochiral single-walled carbon nanotubes using isoindigo-based polymer derivatives. High-performance carbon-based electronic devices were fabricated using aerosol jet printing. The optimized devices showed excellent device-to-device uniformity and high on/off ratios, and exhibited outstanding performance in optoelectronic neuromorphic characteristics, storage, memory, and logic functions, indicating great application potentials.
Article
Chemistry, Analytical
Yue Geng, Yunfei Ren, Xin Wang, Jiaqi Li, Luis Portilla, Yuxiao Fang, Jianwen Zhao
Summary: Flexible printed carbon-nanotube thin-film transistors (CNT-TFTs) were fabricated using a printing process for gas detection. The sensors exhibited low power consumption, high sensitivity, signal amplification, and mechanical flexibility, making them promising for H2S gas detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Multidisciplinary
Xin Wang, Maguang Zhu, Xiaoqian Li, Zongze Qin, Guanghao Lu, Jianwen Zhao, Zhiyong Zhang
Summary: The development of eco-friendly, ultralow-power and easy-to-process electronics faces challenges in off-the-grid applications like IoTs and extreme environments. Paper-based electronics with E-mode CNT CMOS TFTs show high voltage gains, noise margins, and low power dissipation, making them attractive for energy-saving and environment-friendly ICs in harsh environments.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jiaqi Li, Min Li, Zhaofeng Chen, Shuangshuang Shao, Weibing Gu, Ying Gu, Yuxiao Fang, Jianwen Zhao
Summary: A universal roll-to-roll (R2R) printing method was developed to fabricate large area semiconducting single-walled carbon nanotube (sc-SWCNT) thin films on flexible substrates. The printed p-type thin-film transistors (TFTs) showed good electrical properties and mechanical flexibility. In addition, the printed flexible complementary metal oxide semiconductor (CMOS) inverters exhibited rail-to-rail voltage output characteristics, low power consumption, and high voltage gain.
Article
Materials Science, Multidisciplinary
Shuangshuang Shao, Suyun Wang, Min Li, Tanghao Xie, Yuxiao Fang, Penghui Guo, Zhaofeng Chen, Jianwen Zhao
Summary: With the development of neuromorphic electronics, the attention on designing and fabricating large-scale and cost-effective photoelectric synaptic transistors has grown. In this study, the largest printed indium oxide (IO)/indium gallium zinc oxide (IGZO) heterojunction photoelectric synaptic transistor arrays were reported with excellent photoelectric properties. These IO/IGZO synaptic transistors display outstanding electrical properties and demonstrate typical neuromorphic properties. The high-quality IO/IGZO oxide heterostructure contributes to the high device uniformity and outstanding electrical and neuromorphic properties. This work establishes a reliable and efficient strategy for fabricating high-performance, large-area artificial visual synapses based on IO/IGZO heterojunction transistors for artificial visual memory chips.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Jie Deng, Xiaoqian Li, Min Li, Xin Wang, Shuangshuang Shao, Jiaqi Li, Yuxiao Fang, Jianwen Zhao
Summary: In this study, a three-dimensional integration technology was developed to print single-walled carbon nanotube transistors on flexible substrates, achieving high-density and stable PMOS inverter arrays. The printed transistors exhibited good electrical characteristics and mechanical flexibility, making them suitable for wearable electronics and IoT applications.
Article
Materials Science, Multidisciplinary
Tianqi Gao, Jie Deng, Xiaoqian Li, Yunfei Ren, Weibing Gu, Malo Robin, Jianwen Zhao
Summary: In this paper, fully printed flexible ultra-low voltage single-walled carbon nanotube (SWCNT) thin film transistors (TFTs) and CMOS inverters were successfully realized at temperatures lower than 170 degrees C using ionic liquid crosslinked-poly(4-vinylphenol) as the composite solid state electrolyte dielectric layer. The optimized devices exhibited good performance with low power dissipation, achieving best values reported to date for fully printed SWCNT inverters.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Min Li, Jie Deng, Xin Wang, Shuangshuang Shao, Xiaoqian Li, Weibing Gu, Hua Wang, Jianwen Zhao
Summary: Flexible brain-inspired neuromorphic transistors demonstrate excellent electrical properties and the ability to mimic synaptic plasticity. The behavior of these devices is related to the weight concentration of ionic liquids and they can simulate the inhibitory characteristics of olfactory neurons.
FLEXIBLE AND PRINTED ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
Yunfei Ren, Min Li, Xiaoqian Li, Yue Geng, Xin Wang, Jianwen Zhao
Summary: In this study, a new method was developed to construct flexible fully-printed all-carbon thin film transistors with excellent properties and highly sensitive ammonia sensors via aerosol jet printing. The TFTs exhibited high performance, stability, and durability, with high response to NH3 and low power consumption due to the unique materials used.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
