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
Dan Kuang, Yan Li, Yanfei Gao, Jian Guo, Xuyang Li, Shuang Xu, Bin Liu, Xianwen Liu, Yue Zhang, Zhinong Yu
Summary: This study focused on preparing ZnO nanorod arrays on flexible substrates using a hydrothermal method with the addition of PEI to enhance the performance of the ultraviolet photodetectors. Characterization of the morphology, crystallinity, optical properties, and chemical composition showed that the introduction of PEI adjusted the growth process of ZnO nanorod arrays and improved their optoelectronic performance. The PEI-assisted ZnO nanorod arrays photodetectors exhibited higher photo to dark current ratio, responsivity, and quicker time response speed compared to pure ZnO, along with outstanding mechanical flexibility and robustness under bending tests.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
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
Optics
Lequn Li, Chujun Yao, Benyuan Ding, Ning Xu, Jian Sun, Jiada Wu
Summary: ZnO nanostructures can emit strong UV near band edge (NBE) emission, and the UV emission efficiency can be enhanced by surface decorating with semiconductors or metals. The influence of metal coatings on the emission properties of ZnO nanorod arrays is studied, and it is found that the enhancement or reduction in the UV emission depends on the type of contact formed at the metal/ZnO interface, whether it is an ohmic or Schottky contact.
JOURNAL OF LUMINESCENCE
(2023)
Article
Engineering, Electrical & Electronic
Jogendra Singh Rana, Santanu Das, Satyabrata Jit
Summary: A PTB7-decorated ZnO nanorod-based MSM ammonia sensor was demonstrated in this study, showing a high response rate to 20 ppm ammonia gas at room temperature, and still maintaining a certain response rate at a low concentration of 2 ppm. The device also exhibited fast response and recovery times.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Kai Tang, Mingming Jiang, Bingwang Yang, Tong Xu, Zeng Liu, Peng Wan, Caixia Kan, Daning Shi
Summary: This study presents a homojunction ultraviolet photodetector by using p-type Sb-doped ZnO microwire and n-type ZnO layer. By engineering the band alignment of the p-ZnO:Sb/n-ZnO homojunction, the optimized photodetector shows enhanced ultraviolet detection capabilities with a light on/off ratio of 1.6 x 10(8), responsivity over 267 mA W-1, and specific detectivity of approximately 1.2 x 10(14) Jones. This research not only synthesizes stable p-type ZnO, but also provides substantial opportunities for developing high-performance ZnO homojunction optoelectronic devices.
Article
Multidisciplinary Sciences
Sanghyeon Moon, JeongEun Yoo, Wonjoo Lee, Kiyoung Lee
Summary: In this study, self-organized ZnO nanorod arrays were synthesized on FTO glasses and ZnO nanoparticles using chemical bath deposition (CBD) method to enhance the detection properties of ZnO nanostructural electrodes. The ZnO electrodes on the two different substrates were characterized and their detection performance was electrochemically measured in a 2,4,6-trinitrotoluene (2,4,6-TNT) solution. The width of the ZnO nanorods played a role in determining the differences in current densities between the ZnO electrodes, with F-CBD electrodes showing a approximately 45% higher detection efficiency compared to S-CBD electrodes.
Article
Nanoscience & Nanotechnology
Jamal Ahmad Khan, Yogita Maithani, J. P. Singh
Summary: In this study, Ag2Se nanorod arrays were fabricated using the GLAD technique and two-zone furnace, and Ag2Se planar films of different thickness were also prepared. The tilted Ag(2)Se nanorod arrays exhibited excellent thermoelectric performance with zT of 1.14 and a power factor of 3229.21 μW/m-K-2 at 300 K. The superior thermoelectric properties of the nanorod arrays could be attributed to the unique nanocolumnar architecture that facilitated efficient electron transport and phonon scattering at the interfaces. Furthermore, the nanoindentation measurements showed that the nanorod arrays had lower hardness values and elastic modulus compared to the Ag(2)Se films, indicating improved mechanical properties. The synergistic dependence between the tilt structure and thermoelectric properties, along with the simultaneous improvement in mechanical properties, provides a new avenue for the practical applications of Ag2Se in next-generation flexible thermoelectric devices.
ACS APPLIED MATERIALS & INTERFACES
(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
Nanoscience & Nanotechnology
Hongrui Zhang, Guo Tian, Da Xiong, Tao Yang, Shen Zhong, Long Jin, Boling Lan, Lin Deng, Shenglong Wang, Yue Sun, Weiqing Yang, Weili Deng
Summary: In this work, the regulatory effect of the barrier layer in ZnO-based piezoelectric devices is studied through surface engineering, resulting in a significant improvement in the output performance. The regulation mechanism of the ZnO-Cu2O p-n heterojunction devices on piezoelectric output is revealed.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Engineering, Electrical & Electronic
Chandan Kumar, Ajinkya Palwe, Sweta Rani, Sumit Saxena, Shobha Shukla
Summary: This letter presents an inorganic/organic heterojunction photodetector based on a n-type zinc oxide nanorod array (NRA) and a p-type poly3,4-ethylenedioxythiophene:polystyrene sulfonate (PEDOT:PSS). The device exhibits high responsivity, detectivity, spectrum selectivity, and fast response under UV light illumination.
IEEE ELECTRON DEVICE LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Hamid Reza Mazandarani, Bijan Ghafary, Shahab Norouzian Alam
Summary: In this study, n-Type ZnO nanorods were successfully grown on a p-type Si substrate using the hydrothermal technique, and ZnO-based UV photodiodes were fabricated. The structural properties of the ZnO nanorod arrays were found to be influenced by the solution volume in the hydrothermal process, with well-aligned arrays observed on all substrates. Increasing the growth solution volume resulted in higher responsivity of the ZnO-based photodiodes, and the optical properties of the samples were also affected by this volume change.
Article
Chemistry, Physical
Yinhua Lin, Jiexin Zou, Wenliang Wang, Xingyue Liu, Junning Gao, Zhenya Lu
Summary: A self-powered ultraviolet photodetector with high sensitivity and good wavelength selectivity was fabricated using a combination of hydrothermal and RF magnetron sputtering methods. The insertion of a CuO layer significantly improved the device performance and increased the responsivity by almost 12 times. The self-powered photodetector shows great potential for UV sensor applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
Thangapandian Murugesan, Rishi Ranjan Kumar, Aswin kumar Anbalagan, Chih-Hao Lee, Heh-Nan Lin
Summary: Chemiresistive gas sensing has attracted extensive research attention, and the low-cost synthesis of sensitive materials is important for practical use. In this study, a nanocomposite network of a conducting polymer and ZnO nanorods was created for selective UV-activated NO2 gas sensing. The PANi/ZnO 0.5 nanocomposite exhibited excellent gas-sensing performance for NO2, attributed to the formation of abundant p-n heterojunction adsorption sites.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Jiawen Zhou, Qian Qiao, Yufei Tan, Cheng Wu, Jiawen Hu, Xiaofeng Qiu, Shengheng Wu, Jian Zheng, Rui Wang, Cunxi Zhang, Xuan Yu, Xiaoming Yu, Zhenhua Li
Summary: In this work, self-powered n-Zinc Oxide/p-Poly(3-hexylthiophene) (n-ZnO/p- P3HT) inorganic-organic hybrid heterojunction photodetectors were successfully fabricated. The polymer P3HT can efficiently respond to visible light, while the n-ZnO layer functions as a light scattering and electron transport layer. By incorporating 1D-ZnO nanorod arrays (NRAs) and 0D-ZnO quantum dots (QDs) hybridization structure, the performance of the photodetector was greatly improved. The present work provides a new way to optimize the performance of polymer photodetectors.
Article
Physics, Applied
S. Prucnal, Jiada Wu, Y. Berencen, M. O. Liedke, A. Wagner, F. Liu, M. Wang, L. Rebohle, S. Zhou, Hua Cai, W. Skorupa
JOURNAL OF APPLIED PHYSICS
(2017)
Article
Nanoscience & Nanotechnology
Yining Qiu, Chujun Yao, Chengbao Yao, Jie Gan, Wu Zhang, Ning Xu, Jian Sun, Jiada Wu
Article
Chemistry, Physical
Chujun Yao, Jiamin Lin, Lequn Li, Yunpeng Qu, Kai Jiang, Zhigao Hu, Ning Xu, Jian Sun, Jiada Wu
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Chemistry, Physical
Yunpeng Qu, Jiamin Lin, Jiada Wu, Zongxiang Wang, Kai Sun, Min Chen, Binbin Dong, Zhanhu Guo, Runhua Fan
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Optics
Chujun Yao, Wenguang Chen, Lequn Li, Kai Jiang, Zhigao Hu, Jiamin Lin, Ning Xu, Jian Sun, Jiada Wu
Summary: This paper presents a simple and feasible method for liquid-phase fabrication of Au-decorated ZnO nanocomposites using pulsed laser ablation, resulting in materials with high photocatalytic activity under both UV and visible light. The incorporation of Au nanoparticles with ZnO significantly enhances the photogeneration of charge carriers and promotes the separation of the photogenerated charge carriers, leading to excellent photocatalytic performance for the degradation of organic pollutants. Compared with pristine ZnO, the ZnO:Au nanocomposites exhibit nearly double the rate constant for the photodegradation of Rhodamine B under visible light illumination.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Pengxiang Du, Yanan Wei, Jian Sun, Zhifeng Ying, Jiada Wu, Ning Xu
Summary: This study successfully prepared g-C3N4/W18O49 core-shell nanocone arrays, achieving hot electron injection induced by local surface plasmon resonance (LSPR) when the W18O49 nanoparticles were relatively small.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Chujun Yao, Jiamin Lin, Lequn Li, Kai Jiang, Zhigao Hu, Ning Xu, Jian Sun, Jiada Wu
Summary: The study presents a simple, green, and cost-effective method for synthesizing powdered Au-decorated ZnO nanorods with high photocatalytic activity. The synthesized ZnO-Au nanorods exhibit increased ultraviolet and visible light absorption and efficient suppression of recombination of photogenerated electrons and holes, showing promising photocatalytic performance.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Chemistry, Physical
Jiamin Lin, Chujun Yao, Li Wu, Kai Jiang, Zhigao Hu, Lequn Li, Ning Xu, Jian Sun, Jiada Wu
Summary: A plasma-assisted method was utilized to synthesize CuO and decorate ZnO nanorods, resulting in significantly higher photocatalytic activity of CuO-decorated ZnO nanorods compared to pure CuO films and bare ZnO nanorods. The enhanced photocatalytic activity was explained by a proposed Z-scheme electron transfer mechanism for nanostructured ZnO/CuO heterogeneous composites.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Lequn Li, Chujun Yao, Li Wu, Kai Jiang, Zhigao Hu, Ning Xu, Jian Sun, Jiada Wu
Summary: In this study, the enhancement of UV emission of ZnO was achieved by covering the ZnO nanorods with a ZnS coating. The results showed that the NBE emission of ZnO was significantly enhanced after the ZnS coating, both at room temperature and reduced temperatures.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Materials Science, Multidisciplinary
Chujun Yao, Jiamin Lin, Li Wu, Lequn Li, Ning Xu, Jian Sun, Jiada Wu
Summary: ZnO-Au nanocomposites with high photocatalytic activity were synthesized via hydrothermal reactions, where the plasmonic sensitizing effect of Au nanoparticles led to higher light absorption capacity and lower carrier recombination rate, resulting in efficient degradation of RhB. The nanocomposites showed good photocatalytic stability and could be reused as catalysts.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Xu Yang, Hui Li, Wu Zhang, Mingxuan Sun, Lequn Li, Ning Xu, Jiada Wu, Jian Sun
ACS APPLIED MATERIALS & INTERFACES
(2017)
