Article
Engineering, Electrical & Electronic
Hamideh Hajighasemi, Hosein Eshghi
Summary: Undoped and doped (Co, Cu, N) ZnO nanorods were synthesized using the chemical bath deposition method and their UV sensitivity in the metal-semiconductor-metal configuration was compared. The results showed that the addition of dopants led to n-type conductivity, with different activation energies for different dopants. The doped nanorods exhibited improved crystallinity, higher UV absorbance and the ZnO:Co nanorods showed the highest photoresponse ratio.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Xin-Yue Zhang, Qiang Ren, Chen Wang, Lin Zhu, Wen-Juan Ding, Yan-Qiang Cao, Wei-Ming Li, Di Wu, Ai-Dong Li
Summary: In this study, SnO2, ZnO thin film, and SnO2/ZnO composite thin film hydrogen sensors were fabricated using atomic layer deposition (ALD). The effects of ALD cycles and heat treatment temperatures on the sensing properties were investigated. The SnO2/ZnO composite film sensor exhibited the best hydrogen-sensing performance, attributed to the synergistic effect of the SnO2-ZnO heterojunction and oxygen vacancies in the SnO2 film. ALD may be a feasible strategy for constructing highly sensitive hydrogen sensors based on Si for micro-electromechanical system applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Applied
Mingshuai Yuan, Wei Xu, Wukun Zhang, Jianhao Zhao, Huizi Li, Qingguo He, Wei Huang, Jiangong Cheng, Yanyan Fu
Summary: Fluorescent film sensors are widely used for detecting toxic gases, but the design and synthesis of high-performance sensitive materials are complex. This study demonstrates that the sensing performance of fluorescent sensors can be enhanced by simply growing or depositing zinc oxide film on a quartz substrate. The catalytic properties of the zinc oxide buffer effectively accelerate the sensing process between the probe molecules and H2O2 gas.
Article
Chemistry, Analytical
Jing Wang, Yuyan Yang, Yi Xia
Summary: The novel Ti3C2Tx MXene/ZnO nanorod hybrids demonstrated high response, sensing rate, sub-ppb detecting limit, reproducibility, and reversibility for optoelectronic NO2 sensors. By introducing mesostructured Ti3C2Tx MXene/ZnO nanorod hybrids, the sensor showed greatly enhanced optoelectronic and gas-sensing performance to ppb-leveled NO2 under UV illumination, with superior reversibility, sub-ppb detection limit, and high selectivity to NO2. The UV-activated NO2-sensing property was attributed to the hierarchical mesostructure and effective photogenerated carrier separation of Ti3C2Tx MXene, suggesting the promising application of MXene-metal oxide hybrids for high-performance UV-activated NO2 sensors at ambient temperature.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Physical
Akash Rawat, Sagar Panwar, L. P. Purohit
Summary: Hollow cylindrical nanocomposites were synthesized using the sol-gel co-precipitation method and coated on inter-digitated electrodes using the doctor blade method. Various characterization techniques were used to analyze the samples and confirmed the presence of hollow cylindrical microstructure and a surface rich in oxygen vacancies and adsorbed oxygen species. Gas sensing tests showed that the sensor with x=0.8 exhibited the highest response.
SURFACES AND INTERFACES
(2023)
Article
Physics, Applied
Rihui Yao, Xiao Fu, Xiaoqing Li, Tian Qiu, Honglong Ning, Yuexin Yang, Xubing Lu, Xiuhua Cao, Yu Chen, Junbiao Peng
Summary: Indium-gallium-zinc-oxide thin film transistors were successfully fabricated in this study, with Ga-doped ZnO films prepared as source/drain electrodes at room temperature. The electrical properties of the TFTs showed an increase followed by a decrease with the increase of Ga doping content, and the optimal performance was achieved at 2 wt.% Ga2O3 doping. The devices also exhibited good electrical stability under dark conditions for a duration of 5400 s.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Materials Science, Paper & Wood
Yinan Li, Huixin Li, Jin Huang, Liulian Huang, Lihui Chen, Yonghao Ni, Qinghong Zheng
Summary: A highly transparent ZnO/cellulose composite membrane with UV sensing and shielding abilities was prepared via a facile blending method. The membrane exhibits excellent performance in both UV and visible light regions, making it ideal for high-performance UV detection and protection applications.
Article
Materials Science, Multidisciplinary
Babak Adeli, Ehsan Espid, Fariborz Taghipour
Summary: Single-crystal zinc oxide nanowires were synthesized and decorated with catalytic active sites to tailor their gas sensing selectivity. The sensing performances of the materials were investigated under UVLED irradiation against low concentrations of NO2 and NH3 gases. The surface modified ZnO nanowires exhibited significantly enhanced sensing performance, with Rh-decorated ZnO NWs showing superior detection of NO2 and Ir sites promoting the oxidative reaction in the presence of NH3.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Optics
Abdulwahab Salem Zaroug Lahewil, Samer H. Zyoud, Naser M. Ahmed, Ahmad Fairuz Omar, Nurul Zahirah Noor Azman
Summary: In this study, zinc oxide (ZnO) nanoclusters thin films were successfully prepared using laser assisted chemical bath deposition (LACBD) method and utilized to fabricate high responsivity metal-semiconductor-metal (MSM) structured ultraviolet (UV) photodetectors. The thin film was characterized by FE-SEM, EDX and XRD analyses, and the results revealed that LACBD promoted the formation of high-crystallinity ZnO thin film. The UV photodetector exhibited excellent responsiveness and stability, which could be attributed to the optical confinement effect, high surface-to-volume ratio, and superior structural quality of the nanoclusters.
Article
Chemistry, Analytical
Hongtao Wang, Meng Dai, Yueyue Li, Jihao Bai, Yueying Liu, Yuan Li, Chenchang Wang, Fengmin Liu, Geyu Lu
Summary: Three different ZnO nanostructures (nanorods/flowers/spheres) were prepared using hydrothermal method or water bath, and their sensing properties to NO2 activated by UV light were investigated. The nanospheres showed the highest response due to their largest specific surface area, while the nanorods exhibited the fastest response and recovery speeds. The nanoflowers performed in between the nanorods and nanospheres in terms of gas-sensing response and response speed.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Evgeniia M. Khairullina, Maxim S. Panov, Vladimir S. Andriianov, Karolis Ratautas, Ilya I. Tumkin, Gediminas Raciukaitis
Summary: Selective Surface Activation Induced by Laser (SSAIL) method was used to fabricate metallic and bimetallic structures on glass and glass-ceramics for non-enzymatic detection of biologically essential analytes like glucose. The fabricated electrodes showed high sensitivity, wide detection range, selectivity, and long-term stability, with the most promising results seen in copper-gold electrode structures on glass-ceramics.
Article
Chemistry, Multidisciplinary
R. Souissi, B. Bouricha, N. Bouguila, L. El Mir, A. Labidi, M. Abderrabba
Summary: This study presents the integration of ZnO pellets as a virtual sensor array for detecting volatile organic compounds (VOCs). The ZnO pellets were prepared using a sol-gel technique and characterized by XRD and TEM. The sensor showed a good response to various VOCs, with ethanol displaying the highest sensitivity and methanol the lowest. The sensing mechanism was based on the reaction between the VOCs and chemisorbed oxygen on the ZnO semiconductor.
Review
Chemistry, Analytical
Celeste R. Rousseau, Philippe Buhlmann
Summary: Research in recent years has focused on the development of solid-contact ISEs for calibration-free measurements in long-term, in situ analysis. This review discusses the definition of calibration-free usage and relevant literature, with a focus on different mechanisms of ion-to-electron signal transduction and different types of transduction modes.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yuki Mori, Taehoon Cheon, Yohei Kotsugi, Youn-Hye Kim, Yejin Park, Mohd Zahid Ansari, Debananda Mohapatra, Yujin Jang, Jong-Seong Bae, Woobin Kwon, Gahui Kim, Young-Bae Park, Han-Bo-Ram Lee, Wooseok Song, Soo-Hyun Kim
Summary: This study proposes the use of a Ru/ZnO bilayer grown through area-selective atomic layer deposition (AS-ALD) as a multifunctional layer for advanced Cu metallization. The ZnO layer serves as a selective diffusion barrier and glue layer, while the Ru layer acts as a liner and seed layer. The adhesion energy between Ru and SiO2 is found to increase with the presence of ZnO. The Ru/ZnO bilayer demonstrates excellent diffusion barrier performance and helps decrease the via resistance in ever-shrinking Cu lines.
Article
Chemistry, Physical
Saniya Ayaz, Ruhul Amin, Koyal Samantray, Arup Dasgupta, Somaditya Sen
Summary: The study indicates that Al-doped ZnO nanoparticles show potential as an active material for UV photodetectors. Doping results in a reduction of bandgap, improved conductivity, and increased sensitivity to emissions from defect sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
K. L. Foo, U. Hashim, C. H. Voon, Mohammad Kashif, Md. Eaqub Ali
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2016)
Article
Engineering, Electrical & Electronic
Sh. Nadzirah, Uda Hashim, M. Kashif, Shahidah Arina Shamsuddin
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2017)
Article
Engineering, Electrical & Electronic
K. L. Foo, M. Kashif, S. J. Tan, U. Hashim
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2017)
Article
Engineering, Electrical & Electronic
Siti Kudnie Sahari, Muhammad Kashif, Norsuzailina Mohamed Sutan, Zaidi Embong, Nik Amni Fathi Nik Zaini Fathi, Azrul Azlan Hamzah, Rohana Sapawi, Burhanuddin Yeop Majlis, Ibrahim Ahmad
MICROELECTRONICS INTERNATIONAL
(2017)
Review
Green & Sustainable Science & Technology
Usman Bashir Tayab, Mohd Azrik Bin Roslan, Leong Jenn Hwai, Muhammad Kashif
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2017)
Article
Materials Science, Multidisciplinary
Chu Manh Hung, Vy Anh Vuong, Nguyen Van Duy, Dinh Van An, Nguyen Van Hieu, Muhammad Kashif, Nguyen Duc Hoa
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Muhammad Kashif, Zainab Ngaini, Angelina Viviana Harry, Rohit L. Vekariya, Awais Ahmad, Zhiqiang Zuo, Siti Kudnie Sahari, Shahid Hussain, Zuhaib Ashfaq Khan, Abdullah Alarifi
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Biochemistry & Molecular Biology
Foo Wah Low, Goh Chin Hock, Muhammad Kashif, Nurul Asma Samsudin, Chien Fat Chau, Amaliyah Rohsari Indah Utami, Mohammad Aminul Islam, Cheng Yong Heah, Yun Ming Liew, Chin Wei Lai, Nowshad Amin, Sieh Kiong Tiong
Article
Energy & Fuels
Muhammad Kashif, Erdawaty Jafaar, Siti K. Sahari, Foo W. Low, Nguyen D. Hoa, Awais Ahmad, Anees Abbas, Zainab Ngaini, Muhammad Shafa, Ahsanulhaq Qurashi
Summary: Introducing a new organic compound K-Azo enhances the electrical and optical performance of graphene oxide and reduced graphene oxide nanostructured films. The presence of the organic sensitizer significantly improves the conductivity of the thin films, offering potential applications in photovoltaic solar cells. The long-range pi-electron delocalization in the organic sensitizer contributes to the improved conductivity of the graphene oxide and reduced graphene oxide films.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Muhammad Kashif, Erdawaty Jaafar, Poonam Bhadja, Foo Wah Low, Siti Kudnie Sahari, Shahid Hussain, Foo Kai Loong, Awais Ahmad, Tahani Saad AlGarni, Muhammad Shafa, Humaira Asghar, Saad A. Al-Tamrah
Summary: This study investigated the effect of Potassium Permanganate (KMnO4) on the properties of graphene oxide (GO), particularly its electrical properties. Different amounts of KMnO4 oxidizing agent were found to affect the conductivity, morphology, optical properties, and crystalline structure of the GO thin films. The results suggest that GO has potential for use in electrical and electronic devices.
ARABIAN JOURNAL OF CHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Usman Bashir Tayab, Junwei Lu, Fuwen Yang, Tahani Saad AlGarni, Muhammad Kashif
Summary: The concept of microgrid integrates conventional generators, different renewable energy resources, and energy storage systems to meet specific load demands. However, the intermittent nature of renewable energy causes a variance in output, leading to an imbalance between power generation and demand. An energy management system is needed to manage the flow of electricity among different energy resources, while ensuring cost-effective operation.
Article
Crystallography
Muhammad Kashif, Norah Salem Alsaiari, Erdawaty Jaafar, Foo Wah Low, Cheen Sean Oon, Siti Kudnei Sahari, Nayef S. Almuaikel
Summary: A modified Hummer's method was used to synthesize graphene oxide (GO) in a reaction-time-dependent manner, and the drop-casting method was used to coat GO films on a glass substrate. Various techniques were employed to study the morphological, structural, optical, and electrical properties of GO. It was found that the amount of oxygen functional groups and the resistivity of the as-deposited films increased with increasing reaction time. Based on morphological and optical data, the optimized reaction time was determined to be 48 hours.
Article
Physics, Multidisciplinary
Eli Danladi, Muhammad Kashif, Thomas O. Daniel, Christopher U. Achem, Matthew Alpha, Michael Gyan
Summary: Replacing liquid electrolyte with copper (I) thiocyanate (CuSCN) can enhance the performance of dye sensitized solar cells. By optimizing input parameters, higher power conversion efficiency, short circuit current density, and open circuit voltage can be achieved.
EAST EUROPEAN JOURNAL OF PHYSICS
(2022)
Article
Energy & Fuels
Eli Danladi, Muhammad Kashif, Andrew Ichoja, Bikimi Bitrus Ayiya
Summary: This study performed numerical modeling and simulation of hole transport material (HTM)-free perovskite solar cells (PSCs) based on methyl ammonium tin triiodide. The effect of different parameters on the photovoltaic performance of the device was explored and optimized. The optimized device showed significant improvements in power conversion efficiency, short-circuit current density, and open circuit voltage compared to the unoptimized device.
TRANSACTIONS OF TIANJIN UNIVERSITY
(2023)
Article
Materials Science, Multidisciplinary
Muhammad Umar Farooq, Muhammad Asad Ali, Yong He, Aqib Mashood Khan, Catalin Iulin Pruncu, Muhammad Kashif, Naveed Ahmed, Noman Asif
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2020)