Article
Chemistry, Physical
Chenhao Gao, Xiu Liu, Xuan Fang, Bobo Li, Mingxia Qiu, Qianwen Zhang, Haixi Zhang, Hongbin Zhao, Dengkui Wang, Dan Fang, Yingjiao Zhai, Xueying Chu, Jinhua Li, Xiaohua Wang
Summary: In this research, the band offset of the MAPbBr(3)/Al2O3 heterojunction was determined through X-ray photoelectron spectroscopy measurements, showing a type-I band alignment. The carrier confinement effect was observed in the photoluminescence spectra of the heterojunction sample. This study is valuable for the optimization of energy level alignment in perovskite/metallic oxide heterojunctions for the design of photoelectric devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Kingsley O. Egbo, Sujit K. Shil, Cheuk Gary Kwok, Ying Wang, Chao Ping Liu, Kin Man Yu
Summary: This study provides a comprehensive analysis of the optical properties and electronic band offsets of NiO, MoO3, and WO3 oxides, with a focus on the NiO/MoO3 and NiO/WO3 P-N heterojunctions. It was found that both heterojunctions exhibit a type-II band offset, with NiO/MoO3 showing a larger valence band offset. By utilizing XPS and Ultraviolet-Ambient Photoemission spectroscopy, the electronic structures and energy levels of these oxides were deeply investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Amit Kumar Mauraya, Debashrita Mahana, Gaurav Jhaa, Bipul Kumar Pradhan, Shweta Tomer, Preetam Singh, Sunil Singh Kushvaha, Senthil Kumar Muthusamy, Sunil Singh Kushvaha, Senthil Kumar Muthusamy
Summary: Heterojunction-based gas sensors, constructed by combining vacuum evaporation and r.f. sputtering or atomic layer deposition techniques, show enhanced sensing characteristics and selectivity towards CO gas. The ZnO/SnO2 heterojunction exhibits 6-fold enhancement in sensing response compared to bare SnO2 films, with fast response time and low limit of detection.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Shu'an Xing, Guijuan Zhao, Yan Xu, Jie Wang, Xunshuan Li, Wenge Yang, Guipeng Liu, Jianhong Yang
Summary: The valence band offset of h-BN/WS2 heterojunction was experimentally measured, along with the determination of conduction band offset, revealing a type-I band alignment. This measurement is crucial for analyzing and designing devices based on h-BN/WS2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Inorganic & Nuclear
Shuhang Liu, Jun Han, Rongli Cui, Xin Yang, Yunfan Fei, Xingyu Tang, Yida Wang, Yajie Wang, Yongjin Chen, Jiajia Feng, Haiyan Zheng, Kuo Li, Xiaoyang Liu
Summary: In this work, Gd-doped diamond was synthesized from an endohedral metallofullerene (EMF) under high pressure and high temperature conditions. The experiments showed that Gd was uniformly distributed in the diamond lattice, exhibiting dilute paramagnetic properties, and the lattice parameters of diamond were enlarged. This study provides insights into the synthesis of other metal-doped diamond materials.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Yifan Xiao, Xiaoxi Li, Hehe Gong, Wenjun Liu, Xiaohan Wu, Shijin Ding, Hongliang Lu, Jiandong Ye
Summary: In this study, the NiOx/β-Ga2O3 heterojunction with F plasma pre-treatment showed improved performance, including reduced reverse current, increased on-current, and improved on-resistance. The observation of restored electrical properties and enhanced temperature stability after thermal cycling suggests great potential for enhancing the performance of gallium oxide-based heterojunctions.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
J. Canas, G. Alba, D. Leinen, F. Lloret, M. Gutierrez, D. Eon, J. Pernot, E. Gheeraert, D. Araujo
Summary: This study examined the heterojunction of atomic layer deposited alumina and (100) p-diamond using XPS and transmission electron microscopy. A new methodology was employed to measure the valence band offset between diamond and gamma-alumina, resulting in a value of 3.4 eV.
APPLIED SURFACE SCIENCE
(2021)
Article
Physics, Condensed Matter
Romita Chouhan, Arpana Agrawal, Mukul Gupta, Pratima Sen
Summary: The valence and conduction band offset in FeNiO/CuNiO bilayer film were studied, revealing a type-I band alignment at the interface, which facilitates the understanding of carrier transport mechanisms.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Lixing Zhou, Jinjuan Xiang, Xiaolei Wang, Yamin Zhang, Wenwu Wang, Shiwei Feng
Summary: This study experimentally investigates the modulation of CNL through dipole formation at the GeO2/Al2O3 interface and the influence of Al2O3 thickness on CBO. The results show that adjusting CNL can enhance the performance of dielectrics.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2022)
Article
Chemistry, Physical
Teodor I. Milenov, Dimitar A. Dimov, Ivalina A. Avramova, Stefan K. Kolev, Dimitar V. Trifonov, Georgi V. Avdeev, Daniela B. Karashanova, Biliana C. Georgieva, Kamen V. Ivanov, Evgenia P. Valcheva
Summary: This study focuses on the evaluation of the influence of chemical treatment on the structure and morphology of carbon phases. The chemical interactions of two types of graphite and carbon black with acetone, toluene, and phenol were studied. Experimental and theoretical methods were used to determine the chemical and phase composition, as well as the morphology and structure. The findings suggest that the treatment of graphite powders and carbon black with acetone, toluene, or phenol can be an effective preliminary stage for their modification and conversion into graphene-like phases.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Physics, Multidisciplinary
Heyuan Huang, Wenge Yang, Shu'an Xing, Guijuan Zhao, Xunshuan Li, Guipeng Liu, Jianhong Yang
Summary: This study reports the band alignment parameters of ReS2/BN van der Waals heterojunction grown by CVD, with a type-I band alignment determined by XPS. The measured VBO and CEO values make this heterojunction a reference for electronic and photoelectric devices, as well as a good choice for CMOS transistor substrates and gate dielectrics.
Article
Materials Science, Multidisciplinary
Alex K. Schenk, Michael J. Sear, Nikolai Dontschuk, Anton Tadich, Alastair Stacey, Chris I. Pakes
Summary: This study investigated the fluorination of the silicon-terminated diamond surface using a molecular fluorine source. The results showed that the fluorine source reacted with the silicon termination, resulting in an inhomogeneous fluorinated surface. Even after the removal of the fluorine source, partial fluorination remained. The study demonstrated the potential of the silicon-terminated diamond surface for modifying the surface properties of diamond.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Hua Zhou, Hui-Qiong Wang, Jin-Cheng Zheng, Xiao-Dan Wang, Yufeng Zhang, Junyong Kang, Lihua Zhang, Kim Kisslinger, Rui Wu, Jia-Ou Wang, Hai-Jie Qian, Kurash Ibrahim
Summary: The electronic structure of the STO/ZnO heterointerface was investigated using in situ photoemission spectroscopy and X-ray absorption spectroscopy, revealing the formation of polar interfaces and electron transfer phenomena.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Richard J. Wilbraham, Elizabeth A. Howett, Colin Boxall, David I. Hambley, Jessica K. Higgins
Summary: This paper presents a detailed study on the chemical and materials characterization of novel Simulated Spent Nuclear Fuels (SIMFuel) that replicate the state of Spent Nuclear Fuel (SNF) discharged from a UK Advanced Gas-cooled Reactor (AGR). The study evaluates the use of XPS, micro-Raman spectroscopy, and XRD in characterizing SIMFuels, and reveals the effects of lanthanide dopants on the UO2 bulk matrix. The findings suggest the presence of U(V) in the UO2 matrix as a means of charge compensation for the incorporation of Ln(III) states, and provide insights into the O/U ratios in SIMFuels.
JOURNAL OF NUCLEAR MATERIALS
(2022)
Article
Chemistry, Physical
Tung-Yuan Yu, Kun-Lin Lin, Pin-Guang Chen, Tung-Huan Chou
Summary: This study investigated the thermal stability and material properties of HfO2 thin films on Si substrates. The results showed that wet chemical oxidation improved the thermal stability of HfO2 films and reduced oxide leakage current, which is beneficial for developing efficient and thermally stable HfO2 gate oxides in Si-based integrated circuit devices.
SURFACE AND INTERFACE ANALYSIS
(2022)
Article
Materials Science, Multidisciplinary
Zhenzhen Zhao, Wei Zhang, Miao Liu, Dong Wang, Xiyang Wang, Lirong Zheng, Xu Zou, Zizhun Wang, Dabing Li, Keke Huang, Weitao Zheng
Summary: The interaction between electrode materials and charge carriers is crucial for energy storage mechanisms. In this study, a weak and reversible Fe-N interaction was introduced and utilized to address the volume changes during intercalation or formation. X-ray absorption spectroscopy confirmed the balanced Fe-N interaction between the nitrogen of ammonium ions and high-spin Fe in FeHCF. The resulting material exhibited stable energy storage and high-rate performance.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Review
Environmental Sciences
Huanqin Wang, Jitong Zhou, Xue Li, Qiang Ling, Hongyuan Wei, Lei Gao, Ying He, Ming Zhu, Xiao Xiao, Youjiang Liu, Shan Li, Chilai Chen, Guotao Duan, Zhimin Peng, Peili Zhou, Yufeng Duan, Jianbing Wang, Tongzhu Yu, Yixin Yang, Jiguang Wang, Zhen Zhou, Huaqiao Gui, Yanjun Ding
Summary: Emissions from mobile and stationary sources in China contribute to atmospheric pollution, with ultrafine particles (UFPs), volatile organic compounds (VOCs), and other reactive gases like NH3 and NOx being the most harmful to human health. China has implemented regulations and standards to address these pollution sources. This study provides an overview of advancements in monitoring technology for mobile and stationary sources in China and presents the application of instruments in various sectors. These instruments have been used to monitor emissions from vehicles, ships, airports, the chemical industry, and power generation. The improvement in monitoring technology, along with updated regulations, assists in successful implementation. Research hotspots and future trends in atmospheric online monitoring technology are summarized to further understand pollution and enhance environmental monitoring capacity.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Yan Lin, Fengkang Lin, Zhuoran Zhang, Lijia Peng, Wenli Yang, Mao Yang, Bo Luo, Ting Wu, Dabing Li, Xuesen Li, Bing Ran, Songyot Anuchapreeda, Rujirek Chaiwongsa, Pinyaphat Khamphikham, Suwit Duangmano, Jianming Xu, Tao He, Sakorn Pornprasert
Summary: FGFR1 is a receptor tyrosine kinase that is deregulated in certain breast cancers with poor prognosis. However, the key genes regulated by FGFR1 in breast cancer are largely unknown. In this study, we found that activation of FGFR1 upregulated FOXQ1 expression and that FOXQ1 is essential for FGFR1-stimulated cell proliferation.
INTERNATIONAL JOURNAL OF BIOLOGICAL SCIENCES
(2023)
Article
Biochemistry & Molecular Biology
Jiewen Fu, Binghui Song, Jiaman Du, Shuguang Liu, Jiayue He, Ting Xiao, Baixu Zhou, Dabing Li, Xiaoyan Liu, Tao He, Jingliang Cheng, Junjiang Fu
Summary: This study investigated the expression profile and clinical significance of BSG in different types of cancer tissues. It revealed that BSG is upregulated in several tumor types and its expression is associated with susceptibility to SARS-CoV-2 invasion and the severity and progression of malignant cancers. Furthermore, BSG mutations were found to significantly affect survival in various cancers, and BSG expression was correlated with immune cell infiltration and immune-related factors. In addition, the study showed that small molecules CD, HEA, m(2)(6)A, and UMP have therapeutic potential for interfering with SARS-CoV-2 entry and cancer progression.
MOLECULAR BIOLOGY REPORTS
(2023)
Article
Physics, Multidisciplinary
Xianjun Wang, Ke Jiang, Xiaojuan Sun, Zi-Hui Zhang, Yuxuan Chen, Bingxiang Wang, Dabing Li
Summary: The profiles of the valence subbands in an AlGaN-based quantum well are studied, considering quantum confinement effect and strain. Increasing the quantum confinement effect and compressive strain raises the relative position of the heavy hole subband to the crystal field splitting hole subband in the valence band. However, the underlying mechanisms of the modulation by the quantum confinement effect and strain are different. In addition, if the energy level between the heavy hole and crystal field splitting hole subbands is close, the subband anti-crossing effect enhances their coupling and leads to dipole moment transformation between the conduction and valence subbands. These findings have important implications for the design of AlGaN-based optoelectronic devices with short wavelength, high carrier injection, or monolithic integration.
Article
Materials Science, Multidisciplinary
Qikun Wang, Dan Lei, Jiali Huang, Xiaojuan Sun, Dabing Li, Zhenxiang Zhou, Liang Wu
Summary: Single crystalline aluminum nitride (sc-AlN or AlN) boules with a diameter of 3-inch (phi 76 mm) were successfully prepared via the physical vapor transport (PVT) process. The crystal shape transitioned from a hexagonal pyramid to a cylindrical pyramid during the diameter enlargement. The aluminum nitride substrates showed good crystallinity and excellent UV transparency, making them important for the commercialization of deep-UV optoelectronics and ultra-wide bandgap (UWBG) electronics.
FRONTIERS IN MATERIALS
(2023)
Article
Engineering, Environmental
Lijun Chen, Chenguang Wang, Guozhao Liu, Guanwen Su, Leping Dang, Hongyuan Wei
Summary: Rational utilization of surface charge property is an effective method for preparing heterojunctions. A sandwich-like product BPs/Cu/CNs was obtained by using Cu(II) to harmonize g-C3N4 nanosheets (CNs) and black phosphorous nanosheets (BPs) through the interaction of surface charges, resulting in a tight interface and high separation efficiency of photogenerated carriers. The composites exhibited excellent degradation performance for various pollutants under visible light, especially for ciprofloxacin, and the flow of photogenerated carriers in BPs/Cu/CNs was more thermodynamically favorable compared to the typical type-II band structure of BPs/CNs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Analytical
Hu Song, Guanquan Wang, Jing Wang, Xia Yang, Hongyuan Wei, Shunzhong Luo
Summary: TTHMP has been found to have good bone-seeking ability in previous studies. In this research, [Tc-99m]Tc-TTHMP was prepared and evaluated for its potential application in skeletal system imaging. Corresponding TTHMP kits were also developed. The biodistribution data showed high uptake of [Tc-99m]Tc-TTHMP in the bone and rapid excretion through the urinary system. Micro-SPECT/CT imaging in normal mice and SPECT imaging in a normal Beagle dog confirmed the results. It is suggested that [Tc-99m]Tc-TTHMP can be a candidate for skeletal system imaging.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Chemistry, Analytical
Kehong Li, Wenqi Fan, Jingxuan Yan, Jing Wang, Peng Zhao, Wei Liao, Yuchuan Yang, Xia Yang, Hongyuan Wei, Yue Chen
Summary: This study investigated the radiosensitivity induced by Lu-177 and the binding affinity of cetuximab to several non-small-cell lung cancer cells (NSCLCs). Lu-177 caused apoptosis in NSCLCs through DNA double-strand damage, which was dependent on cell type. Introducing Lu-177 to the antibody enhanced its cytotoxic effect on NSCLCs. The [Lu-177]Lu-DOTA-cetuximab showed great potential for targeting diagnosis and radiotherapy in lung cancers, as demonstrated by in vivo SPECT/CT imaging and biodistribution results.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Yuhao Liang, Chen Shen, Hong Liu, Chao Wang, Dabing Li, Xiaoxue Zhao, Li-Zhen Fan
Summary: This study investigates the influence of conversion-alloy interlayers on the dendritic growth in all-solid-state lithium-metal batteries. The results show that the surface roughness and electronic conductivity of the interlayer play crucial roles in dendritic tolerance. By tailoring the interlayer to a hierarchical gradient structure, a smooth organic-rich outer layer and a composition-regulated inorganic-rich inner layer are achieved, leading to dendrite-free and dense Li deposition with improved cycling stability.
Article
Chemistry, Multidisciplinary
Wanping He, Kairu Ye, Huiru Li, Chenguang Wang, Hongyuan Wei, Leping Dang
Summary: Gamma-cyclodextrin-based metal-organic frameworks (gamma-CD-MOFs) have been successfully prepared with a modified vapor diffusion method, showing great potential as a biocompatible porous material for carrier-based drug delivery. Encapsulation of oregano essential oil (OEO) in gamma-CD-MOFs did not alter their crystal structure and increased their thermal stability. In vitro experiments demonstrated that gamma-CD-MOFs exhibited excellent release control. Therefore, gamma-CD-MOFs can serve as an effective carrier for delivering OEO.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Hang Zang, Zhiming Shi, Jianwei Ben, Ke Jiang, Yang Chen, Shanli Zhang, Mingrui Liu, Tong Wu, Yuping Jia, Xiaojuan Sun, Dabing Li
Summary: III-nitride materials like AlN, GaN, and InN have promising applications in the semiconductor industry, but the high defect densities resulting from the growth process can impact device performance. In this study, a first-principles investigation was conducted to understand the growth and electronic properties of stacking mismatch boundaries (SMBs) in III-nitride materials. The study revealed that SMBs can be categorized into three types based on the terrace edge of the coalescent normal and stacking-fault regions, and the type can be controlled by varying the chemical potential and initial nucleation size during growth. It was also found that SMBs produce in-gap states with various properties, such as itinerant magnetism and optical transition.
Article
Chemistry, Multidisciplinary
Yuxuan Chen, Ke Jiang, Xiaojuan Sun, Zi-Hui Zhang, Shanli Zhang, Jianwei Ben, Bingxiang Wang, Long Guo, Dabing Li
Summary: We proposed an alternative strategy to optimize the metal/n-AlGaN contact by introducing a heterostructure with a polarization effect and by etching a recess structure through the heterostructure beneath the n-contact metal. This strategy could simultaneously decrease the Schottky barrier height as well as provide a better carrier transport channel, enhancing both the thermionic emission and tunneling processes. This investigation provides an alternative approach to obtain a good n-contact, especially for Al-rich AlGaN-based devices, such as diodes and LEDs.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Multidisciplinary
Xiaojuan Sun, Jiaen Sui, Jianwei Ben, Hang Zang, Ke Jiang, Shanli Zhang, Shunpeng Lv, Zhiming Shi, Tong Wu, Dabing Li
Summary: This study investigates the underlying mechanism of the decrease in basal stacking fault density in a nonpolar AlN template. It is found that the elimination of the I-1-type stacking fault involves its transformation into an I-3-type stacking fault, followed by annihilation. The results presented here are significant for the synthesis of high-quality nonpolar AlN materials and nonpolar light-emitting diodes.
Review
Nanoscience & Nanotechnology
Changjin Yang, Lei Liang, Li Qin, Hui Tang, Yuxin Lei, Peng Jia, Yongyi Chen, Yubing Wang, Yu Song, Cheng Qiu, Chuantao Zheng, Huan Zhao, Xin Li, Dabing Li, Lijun Wang
Summary: Tunable semiconductor lasers have various important applications, but integrating light sources with silicon is necessary for achieving high-performance tunable semiconductor lasers due to the poor light-emitting properties of silicon. This study reviews the methods for integrating silicon-based light sources and the development of silicon-based integrated tunable semiconductor lasers. It also summarizes the techniques to reduce the linewidth of tunable lasers and discusses the trends and prospects of silicon-based integrated light sources and tunable lasers.
