Article
Nanoscience & Nanotechnology
Xuxuan Yang, Lihang Qu, Feng Gao, Yunxia Hu, Huan Yu, Yunxia Wang, Mengqi Cui, Yunxiao Zhang, Zhendong Fu, Yuewu Huang, Wei Feng, Bin Li, PingAn Hu
Summary: In this study, ultrathin 2D Bi2O2S nanosheets were successfully synthesized and used to fabricate PEC photodetectors with excellent performance. The photodetectors exhibited a broad photoresponse spectrum, high responsivity, fast response times, and good long-term stability, and could function as self-powered broadband photodetectors.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Ping Rong, Shiyong Gao, Huiqing Lu, Shuai Ren, Mingyi Zhang, Shujie Jiao, Yong Zhang, Jinzhong Wang
Summary: Sodium bismuth sulfide (NaBiS2) flowers with a hierarchical structure and assembled nanosheets were successfully fabricated through a hydrothermal method. The photodetector based on these flowers demonstrated fast response speed, high responsivity, and stability.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Kai Wang, Hui Qiao, Jun Li, Xiang Qi
Summary: In this study, a high-performance photodetector based on Bi2O2S nanoplates was developed, demonstrating excellent optical response switching behaviors and long-term stability, as well as showing self-healing properties in alkaline environments.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Linlin Li, Depeng Wang, Dong Zhang, Wenhao Ran, Yongxu Yan, Zhexin Li, Lili Wang, Guozhen Shen
Summary: This study introduces a self-powered, non-contact mechano-optical communication system based on a wearable Te@TeSe photodetector textile. The system modulates robotic manipulator actions by encoding near-infrared light, and the wearable Te@TeSe photodetector textile enhances photocurrent and responsivity compared to a pristine Te nanowire array.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jia-Wei Qiao, Feng-Zhe Cui, Lin Feng, Peng Lu, Hang Yin, Xiao-Tao Hao
Summary: By using a modification layer-assisted approach, ultrathin self-powered organic photodetectors with enhanced sensitivity and ultrafast response time performance are constructed, which is attributed to efficient exciton dissociation, energy transfer, and charge extraction processes. The clear correlation between the exciton dissociation process, photogenerated exciton yields, and energy transfer channels provides essential insight into the design of efficient ultrathin organic photodetectors.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Shuangyin Gao, Yi Huang, Jin Tan, Jianmei Xu, Ling Zhao, Wei Zhou, Zhihong Yang, Jian Sun, Hao Gong
Summary: In this study, highly transparent p-type amorphous Cu-HHTP films were synthesized using electrostatic spinning method and applied as materials for photodetectors. These amorphous films exhibited ultra-high response speed and sensitivity, and maintained stable performance even at high temperatures. Furthermore, a flexible metal-semiconductor-metal photodetector based on p-a-Cu-HHTP was developed, showing excellent mechanical stability and photoresponse, making it suitable for wearable optoelectronics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Ye Zhang, Yiguo Xu, Jia Guo, Xiuwen Zhang, Xinling Liu, Yushuang Fu, Feng Zhang, Chunyang Ma, Zhe Shi, Rui Cao, Han Zhang
Summary: Mixed-dimensional van der Waals heterojunctions show excellent photoelectric conversion capability, with the successful construction of a type II van der Waals heterojunction between gC3N4 and Bi demonstrating high photocurrent and responsivity in self-powered PEC-type photodetectors. Furthermore, the g-C3N4@Bi-based PD exhibits outstanding long-term stability and potential for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Electrical & Electronic
Tani Chekke, Ringshar Narzary, Soni Ngadong, Biswarup Satpati, Sayan Bayan, Upamanyu Das
Summary: We have fabricated a self-powered Au decorated WS2-based single-electrode triboelectric nanogenerator (STENG) for potential application as a photodetector. The flexible and wearable STENG was constructed on a cellulose paper and PVA membrane substrate. Different triboelectric counter layers including Al and PTFE were used to investigate the triboelectric operation, and it was found that the Au-WS2-PTFE STENG generated the highest output voltage among all the counter electrode systems. The device exhibited a maximum power of 1.4 μW and was capable of accumulating a charge of up to 64 nC within 3 seconds. The STENG showed higher output voltage in the presence of light compared to dark conditions, and demonstrated photo-detection property with a sensitivity of 0.4 Vm2/W. The measured voltage in the UV to visible region suggested that the photodetector could be utilized in broadband applications. The excellent durability and long-term stability of the fabricated STENG indicated its potential for long-term performance, and this study could lead to the development of a prototype WS2-based self-power photodetector for the next generation.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Materials Science, Multidisciplinary
Ganbo Zhang, Nanyin Zhao, Kai Wang, Jun Li
Summary: Researchers have found that bismuth oxysulfide (Bi2O2S), a new two-dimensional optoelectronic material, has a long carrier lifetime and a unique loose structure, making it an attractive option for study. In this work, Bi2O2S nanosheets were synthesized at room temperature and used to create a flexible photodetector with deionized water solid-state electrolytes. The photodetector showed excellent photoresponse performance and stability under 0V, making it a promising alternative to traditional detectors.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Materials Science, Multidisciplinary
Jie Zhang, Fengjing Liu, Dong Liu, Yanxue Yin, Mingxu Wang, Zixu Sa, Li Sun, Xiaoxin Zheng, Xinming Zhuang, Zengtao Lv, Wenxiang Mu, Zhitai Jia, Yang Tan, Feng Chen, Zai-xing Yang
Summary: The study investigates the photodetection performance of thin amorphous Ga2O3 nanosheet, which has been widely used as dielectric and passivation materials. By peeling off from the Ga solid-melt surface, the amorphous Ga2O3 nanosheet is confirmed to have an amorphous characteristic through selected area electron diffraction and X-ray diffraction. However, due to limited absorption ability and abundant defect states, the amorphous Ga2O3 nanosheet shows low photocurrent and slow response time even at a bias voltage. To enhance the photodetection performance, PbI2 nanosheet is grown on the surface of the amorphous Ga2O3 nanosheet, forming a Ga2O3/PbI2 heterojunction photodetector. The heterojunction photodetector exhibits larger photocurrent (1.6 nA) and faster response times (2 ms rise time and 3 ms decay time) even at a zero bias voltage, and it also shows excellent self-powered photoresponse characteristic and mechanical flexibility when configured into a flexible photodetector. This work provides a pathway for the development of high-performance flexible optoelectronic devices.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Physical
Yongxu Yan, Wenhao Ran, Zhexin Li, Linlin Li, Zheng Lou, Guozhen Shen
Summary: By surface modification of Cd3As2 NWs with sulfur, the oxidation of surface was prevented and bandgap structure was optimized to enhance the photoresponse performance. The S-modified Cd3As2 samples as core/shell Cd3As2/CdS NWs showed significantly improved responsivity in the NIR band.
Article
Chemistry, Physical
Ribwar Ahmadi, Amin Abnavi, Hamidreza Ghanbari, Hadi Mohandes, Mohammad Reza Mohammadzadeh, Thushani De Silva, Amirhossein Hasani, Mirette Fawzy, Fahmid Kabir, Michael M. Adachi
Summary: The study introduces a photodetector based on the coupling of pyroelectric and photoelectric effects in a silicon-water heterojunction, leading to high responsivity and specific detectivity suitable for liquid-compatible applications with polarization sensitivity.
Article
Chemistry, Multidisciplinary
Young Kyun Choi, Tae Hyuk Kim, Byung Ku Jung, Taesung Park, Yong Min Lee, Seongkeun Oh, Hyung Jin Choi, Junhyeok Park, Sang-In Bae, YunKi Lee, Jae Won Shim, Hye Yeon Park, Soong Ju Oh
Summary: In this study, a high-performance self-powered infrared photodetector was designed by treating the zinc oxide electron transport layer with azide ions, effectively eliminating traps and improving carrier mobility and band alignment. The azide-ion-treated PbS QPD demonstrated enhanced responsivity, detectivity, response time, and dynamic range.
Article
Chemistry, Physical
Chenxu Miao, Yongzheng Fang, Kai Zhu, Chunliang Zhou, Ke Ye, Jun Yan, Dianxue Cao, Guiling Wang, Panpan Xu, Chunling Xie
Summary: A binder-free ultrathin alpha-MnSe nanosheets electrode was prepared and exhibited high capacity, good rate capability, and long-term durability. Moreover, an asymmetric supercapacitor fabricated by alpha-MnSe anode and active carbon cathode showed high energy density and satisfying cycle performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Nanoscience & Nanotechnology
Jinrong Yao, Fangfang Chen, Juanjuan Li, Junli Du, Di Wu, Yongtao Tian, Cheng Zhang, Xinjian Li, Pei Lin
Summary: The study reports the fabrication of a mixed-dimensional vdW photodiode using 2D Te and 1D CdS nanobelt, which exhibits excellent self-powered photosensing performance with a broad response spectrum and high responsivity in the short-wave infrared region. The promising applications of Te/CdS vdW heterostructure in high-performance photodetectors are demonstrated, and the mixed-dimensional integration strategy opens up new possibilities for device design in the field of 2D Te-based optoelectronics.
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)