Article
Chemistry, Multidisciplinary
Zhaohui Ren, Luoyuan Ruan, Lichang Yin, Karthik Akkiraju, Livia Giordano, Zhongran Liu, Shi Li, Zixing Ye, Songda Li, Hangsheng Yang, Yong Wang, He Tian, Gang Liu, Yang Shao-Horn, Gaorong Han
Summary: It is reported that surface oxygen vacancies can be confined electrostatically near the perimeter interface between Pt {111} nanocrystals and the negative polar surface (001) of ferroelectric PbTiO3. This catalyst demonstrates tunable catalytic CO oxidation kinetics by increasing the O-2 gas pressure, opening a new pathway for CO oxidation catalytic activity.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Chen Chen, Heng Liu, Qinglin Lai, Xiaoyu Mao, Jun Fu, Zhaoming Fu, Hualing Zeng
Summary: Room-temperature ferroelectricity in two-dimensional materials has the potential for developing atomic-scale functional devices. However, the controllable generation of uniform domains in 2D ferroelectrics remains challenging. In this study, we demonstrate the artificial generation of large-scale stripe domains using the flexoelectric effect in 2D ferroelectric CuInP2S6. We mechanically switch the out-of-plane polarization in ultrathin CuInP2S6 with giant strain gradients. The density of stripe domains can be controlled through substrate strain engineering.
Article
Optics
Jiajing Wang, Yongjin Li, Tianhui Wang, Fangyu He, Zhaoyi Yin, Jianbei Qiu, Zhiguo Song
Summary: In this study, BiOCl:Eu3+ microcrystals with various morphologies were successfully prepared by a simple solvothermal method. The luminescence properties of the samples under 313nm excitation showed enhanced far-red emission of Eu3+ ions with increasing dimensionality. The best photocatalytic activity for the degradation of RhB under visible light illumination was observed in BiOCl:Eu3+ 3D hierarchical porous structures (HPs).
JOURNAL OF LUMINESCENCE
(2021)
Article
Engineering, Environmental
Zhen Wei, Wenlu Li, Jisong Hu, Xinguo Ma, Yongfa Zhu
Summary: Solar-to-chemical energy conversion through photocatalysis is a valuable and sustainable strategy for addressing energy and environmental crises. The design and synthesis of SnOx-modified BiOCl (Sn-BiOCl) catalysts via solvothermal method show enhanced photocatalytic performance in the removal of organic pollutants. The introduction of Sn regulates the growth of BiOCl, forming ultrathin nanosheets with oxygen vacancies that induce an inter-facial internal electric field for accelerated photogenerated charge separation.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Xiang He, Muzaffar Ahmad Boda, Chen Chen, Rongmin Dun, Lu Wang, Yizheng Bao, Dongfang Pang, Lin Guo, Huarong Zeng, Yongxiang Li, Zhiguo Yi
Summary: A universal strategy to enable large electromechanical deformations in various piezoceramics is still lacking. In this study, by gradually reducing the thickness, it was discovered that thin lead-free piezoceramics can achieve large electrostrain, and the bending deformation induced by asymmetric domain switching in the surface layers plays a significant role in the enhanced strain output and shape retention effect. These findings have the potential to accelerate the development of high-performance lead-free piezoceramics.
MATERIALS HORIZONS
(2023)
Article
Materials Science, Ceramics
Kaili Shang, Wenjing Shi, Yule Yang, Leiyang Zhang, Qingyuan Hu, Xiaoyong Wei, Li Jin
Summary: This study presents a new BNT-based relaxor ferroelectric system, which disrupts the long-range ferroelectric order and induces polar nanoregions to improve Wrec and eta. The material shows superior energy-storage properties under a medium electric field, with good temperature stability.
CERAMICS INTERNATIONAL
(2022)
Article
Physics, Multidisciplinary
Ji Hye Lee, Hong Joon Kim, Jiyong Yoon, Sanghyeon Kim, Jeong Rae Kim, Wei Peng, Se Young Park, Tae Won Noh, Daesu Lee
Summary: This research reveals a method of mechanical polarization switching utilizing metastable ferroelectricity, and confirms that mechanical forces can significantly reduce the coercivity of metastable ferroelectricity, enabling efficient polarization switching. Furthermore, using low mechanical forces allows for higher density data storage.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Shuguan Li, Fang Chen, Shengqi Chu, Zeyu Zhang, Jindi Huang, Shengyao Wang, Yibo Feng, Cong Wang, Hongwei Huang
Summary: This study develops a coupled strategy of ferroelectric poling and cationic vacancy to achieve high-performance CO2 photoreduction on ferroelectric Bi2MoO6, and discloses their interesting synergy-compensation relationship. The corona poling enhances the intrinsic electric field for charge separation, while the introduced Mo vacancy facilitates the adsorption and activation of CO2 by creating local electric field. Coupling poling and V-Mo not only integrates their advantages but also compensates for their shortcomings.
Article
Chemistry, Physical
Chenrui Liu, He Xiao, Yun Liu, Dejian Li, Hao He, Xiaohan Huang, Wentao Shen, Zhiyan Yan, Zhi Dang, Runliang Zhu
Summary: In this study, a novel homojunction (Ni-FeS2/FeS2) was prepared by in-situ growth of nickel-doped FeS2 nanoparticles on FeS2 nanobelts. The Ni-FeS2/FeS2 homojunction with 2 mmol Ni doping exhibited the highest efficiency in Cr(VI) reduction. Density Functional Theory calculations confirmed that Ni doping not only facilitated the formation of sulfur vacancies, but also modified the band gap and band structure of FeS2 nanoparticles. Additionally, doping energy levels introduced by Ni doping and the internal electric field in the homojunction were found to play significant roles in accelerating the separation efficiency of photogenerated carriers.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yinghui Wang, Jingcong Hu, Teng Ge, Fang Chen, Yue Lu, Runhua Chen, Hongjun Zhang, Bangjiao Ye, Shengyao Wang, Yihe Zhang, Tianyi Ma, Hongwei Huang
Summary: A gradient layer of tungsten vacancies is created on Bi2WO6 nanosheets, forming an inner-to-outer tandem homojunction with an internal electric field that promotes the migration of photoelectrons. The vacancies also change the coordination environment and the mode of CO2 adsorption, which lowers the formation barrier and facilitates the thermodynamics of CO2 conversion. Without cocatalysts or sacrificial reagents, the W-vacant Bi2WO6 demonstrates outstanding photocatalytic CO2 reduction performance, making it one of the best catalysts in similar reaction systems. This study highlights the potential of gradient vacancies in regulating charge dynamics and catalytic reaction thermodynamics.
ADVANCED MATERIALS
(2023)
Review
Materials Science, Ceramics
Junbo Xia, Tian Ding, Wei Ren, Xing Zhao, Ke Ren, Yiguang Wang
Summary: Joining ceramics with ceramics and/or metals is crucial for expanding their application areas. Liquid-state joining is a potential solution to overcome the limitations of high temperature and long joining time in solid-state joining. However, the low melting temperature of the filler restricts the operating temperature. To address this challenge, various joining techniques utilizing the effect of an electric field have been developed to rapidly join ceramic-based materials at low temperatures. This review discusses these methods based on the types of materials that can be joined and the underlying mechanisms.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Xiaoming Gao, Hongbin He, Wei Zhu, Chunming Yang, Kaixuan Xu, Bingbing Feng, Yanan Hu, Feng Fu
Summary: Using CO2, water, and sunlight to produce solar fuel is an attractive process, but it is often limited by low selectivity of reduction products and poor photocatalytic activity. This study successfully prepares a S-scheme heterojunction with strong interfacial electric field for CO2 reduction to CO. The performance of this new material shows significantly improved CO yield and selectivity compared to traditional catalysts under visible light.
Article
Chemistry, Multidisciplinary
Yuqing Zhou, Changqing Guo, Guohua Dong, Haixia Liu, Ziyao Zhou, Ben Niu, Di Wu, Tao Li, Houbing Huang, Ming Liu, Tai Min
Summary: In this study, zigzag wrinkle morphology was fabricated on inorganic thin films to modulate ferroelectric domains and create a superstructure with periodic surface charge distribution. This unique structure can be switched using strain gradient and provides a means to regulate cells and polar molecules in physiological and bioelectric applications.
Article
Chemistry, Physical
Yunjing Wang, Hongchen He, Yunjiang Wang, Meili Xie, Feng Jing, Xianhong Yin, Feilong Hu, Yan Mi
Summary: This study demonstrates the possibility of simultaneously separating bulk and surface photocharges in photocatalysts to enhance photocatalytic activity.
Article
Chemistry, Physical
Xiao Liu, Rongrong Rao, Jing Shi, Jiayi He, Yunxia Zhao, Jia Liu, Huiling Du
Summary: This study investigates the intrinsic defects and polarization mechanisms in dielectrics for high-temperature stability, showing that optimizing the structure and atmosphere can enhance dielectric properties and achieve high energy storage density and efficiency under relatively low electric fields.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Xiaoting Liu, Jincan Zhang, Wendong Wang, Wei Zhao, Heng Chen, Bingyao Liu, Mengqi Zhang, Fushun Liang, Lijuan Zhang, Rui Zhang, Ning Li, Yuexin Zhang, Yuchen Liu, Kaicheng Jia, Luzhao Sun, Yixuan Zhao, Peng Gao, Qinghong Yuan, Li Lin, Hailin Peng, Zhongfan Liu
Summary: The crystallographic orientations of underlying metal substrates determine the cleanness of graphene, with slower diffusion of active carbon species on the graphene-Cu(100) surface key to suppressing contamination formation. Facile synthesis of clean graphene is achieved on meter-sized Cu(100), enhancing optical and electrical performance.
Article
Nanoscience & Nanotechnology
Heyi Ma, Xianxin Wu, Wenna Du, Liyun Zhao, Yangguang Zhong, Shulin Chen, Peng Gao, Shuai Yue, Qing Zhang, Wei Liu, Xinfeng Liu
Summary: Lead iodide (PbI2), a two-dimensional layered semiconductor, is widely used in optoelectronics due to its unique crystal structure and optical and electrical properties. In this study, PbI2 platelets with regular shapes were synthesized using chemical vapor deposition. The Raman scattering of PbI2 platelets was found to be significantly enhanced at the edge when laser radiation was applied, which was attributed to the high refractive index contrast waveguide formed in the well-defined PbI2 platelets. The Raman enhancement factor was directly related to the thickness of the PbI2 platelet, confirming the waveguide-enhanced edge Raman effect. This investigation provides reference for potential optoelectronic applications of 2D layered PbI2.
Article
Nanoscience & Nanotechnology
Jinhuan Wang, Xiaozhi Xu, Ting Cheng, Lehua Gu, Ruixi Qiao, Zhihua Liang, Dongdong Ding, Hao Hong, Peiming Zheng, Zhibin Zhang, Zhihong Zhang, Shuai Zhang, Guoliang Cui, Chao Chang, Chen Huang, Jiajie Qi, Jing Liang, Can Liu, Yonggang Zuo, Guodong Xue, Xinjie Fang, Jinpeng Tian, Muhong Wu, Yi Guo, Zhixin Yao, Qingze Jiao, Lei Liu, Peng Gao, Qunyang Li, Rong Yang, Guangyu Zhang, Zhilie Tang, Dapeng Yu, Enge Wang, Jianming Lu, Yun Zhao, Shiwei Wu, Feng Ding, Kaihui Liu
Summary: Epitaxial growth of two-inch single-crystal WS2 monolayer films on vicinal a-plane sapphire surfaces has been achieved, driven by a dual-coupling-guided mechanism resulting in unidirectional alignment of WS2 islands. The high quality of WS2 monolayers is evidenced by a photoluminescent circular helicity of about 55%, comparable to exfoliated WS2 flakes. The findings offer the opportunity to boost the production of wafer-scale single crystals of various two-dimensional materials on insulators for applications in integrated devices.
NATURE NANOTECHNOLOGY
(2022)
Article
Physics, Multidisciplinary
Zhihao Zang, Yaozheng Zhu, Ming Xi, Shangjie Tian, Tingting Wang, Pingfan Gu, Yuxuan Peng, Shiqi Yang, Xiaolong Xu, Yanping Li, Bo Han, Liwei Liu, Yeliang Wang, Peng Gao, Jinbo Yang, Hechang Lei, Yuan Huang, Yu Ye
Summary: By using polar reflective magnetic circular dichroism spectroscopy, the magnetic behaviors of MnSb2Te4 down to a single septuple layer limit are revealed, including odd-even layer-number effect and spin-flipping transitions. This finding is of great significance for further exploration of the topological phenomena in this material.
PHYSICAL REVIEW LETTERS
(2022)
Article
Multidisciplinary Sciences
Yue-Hui Li, Rui-Shi Qi, Ruo-Chen Shi, Jian-Nan Hu, Zhe-Tong Liu, Yuan-Wei Sun, Ming-Qiang Li, Ning Li, Can-Li Song, Lai Wang, Zhi-Biao Hao, Yi Luo, Qi-Kun Xue, Xu-Cun Ma, Peng Gao
Summary: This study investigates the interface thermal conductance of nitride-based high-power devices using atomically resolved vibrational electron energy-loss spectroscopy, and observes different interface phonon modes and their contributions to thermal conductance.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Article
Chemistry, Multidisciplinary
Bingyao Liu, Qi Chen, Zhaolong Chen, Shenyuan Yang, Jingyuan Shan, Zhetong Liu, Yue Yin, Fang Ren, Shuo Zhang, Rong Wang, Mei Wu, Rui Hou, Tongbo Wei, Junxi Wang, Jingyu Sun, Jinmin Li, Zhongfan Liu, Zhiqiang Liu, Peng Gao
Summary: This study demonstrates the successful fabrication of low-strain single-crystalline nitride films on highly mismatched substrates via graphene-assisted remote heteroepitaxy. By weakening the interface potential and smoothing the atomic steps with graphene, the dislocation density caused by lattice mismatches is significantly reduced, leading to the fabrication of a yellow light-emitting diode.
Article
Chemistry, Multidisciplinary
Pao-Wen Shao, Heng-Jui Liu, Yuanwei Sun, Mei Wu, Ren-Ci Peng, Meng Wang, Fei Xue, Xiaoxing Cheng, Lei Su, Peng Gao, Pu Yu, Long-Qing Chen, Xiaoqing Pan, Yachin Ivry, Yi-Chun Chen, Ying-Hao Chu
Summary: The emergence of polar domain walls in centrosymmetric ferroelastics has been demonstrated through direct observation, allowing for potential applications in energy conversion and local piezoelectricity.
Article
Multidisciplinary Sciences
Yahui Liu, Zhengmeng Xu, Lin Liu, Kai Zhang, Yang Meng, Yuanwei Sun, Peng Gao, Hong-Wu Zhao, Qian Niu, J. Li
Summary: The authors demonstrate possible magnon chirality switching, reading, and modulation in an artificial ferrimagnet multilayer, showing chirality as an independent degree of freedom. This result provides a practical platform for developing chirality-based spintronics.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
An Hu, Peng Bai, Yunke Zhu, Zeguo Song, Ruotao Wang, Jiangchang Zheng, Yige Yao, Qu Zhang, Zhengping Ding, Peng Gao, Xinyu Sui, Xinfeng Liu, Yunan Gao
Summary: This study develops a new synthesis protocol to produce high-quality CdSe/CdSeS core/alloyed-crown nanoplatelets with high photoluminescence quantum yield, continuous tunability of emission peaks, and low full-width-at-half-maximum. These nanoplatelets show potential for developing advanced light sources.
ADVANCED OPTICAL MATERIALS
(2022)
Correction
Optics
Hongliang Chang, Zhetong Liu, Shenyuan Yang, Yaqi Gao, Jingyuan Shan, Bingyao Liu, Jingyu Sun, Zhaolong Chen, Jianchang Yan, Zhiqiang Liu, Junxi Wang, Peng Gao, Jinmin Li, Zhongfan Liu, Tongbo Wei
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Physics, Multidisciplinary
Ruixue Zhu, Zhexin Jiang, Xinxin Zhang, Xiangli Zhong, Congbing Tan, Mingwei Liu, Yuanwei Sun, Xiaomei Li, Ruishi Qi, Ke Qu, Zhetong Liu, Mei Wu, Mingqiang Li, Boyuan Huang, Zhi Xu, Jinbin Wang, Kaihui Liu, Peng Gao, Jie Wang, Jiangyu Li, Xuedong Bai
Summary: In this study, the dynamics of room-temperature polar skyrmions were investigated using in situ scanning transmission electron microscopy. The reversible transformation among different structures was demonstrated, and the electrical manipulation of nanoscale polar skyrmions was discussed. This research provides important insights into the electric field control and potential applications in nanoelectronics.
PHYSICAL REVIEW LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yue Yin, Bingyao Liu, Qi Chen, Zhaolong Chen, Fang Ren, Shuo Zhang, Zhetong Liu, Rong Wang, Meng Liang, Jianchang Yan, Jingyu Sun, Xiaoyan Yi, Tongbo Wei, Junxi Wang, Jinmin Li, Zhongfan Liu, Peng Gao, Zhiqiang Liu
Summary: This study successfully achieved epitaxial growth of single-crystalline GaN film on a WS2-glass wafer, paving the way for heterogeneous integration of semiconductors and breaking through the design and performance limitations of devices induced by substrate restriction.
Article
Multidisciplinary Sciences
Mingqiang Li, Tiannan Yang, Pan Chen, Yongjun Wang, Ruixue Zhu, Xiaomei Li, Ruochen Shi, Heng-Jui Liu, Yen-Lin Huang, Xiumei Ma, Jingmin Zhang, Xuedong Bai, Long-Qing Chen, Ying-Hao Chu, Peng Gao
Summary: Researchers demonstrate the controlled nucleation and motion of isolated three-fold vertices under an applied electric field. This study sheds light on the dynamic property of independent topological polar structures.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Junhua Liu, Xinxin Zhang, Yaoyao Ji, Xiaofei Gao, Jiating Wu, Minjie Zhang, Lin Li, Xiaokang Liu, Wensheng Yan, Tao Yao, Yuewei Yin, Lingfei Wang, Hangwen Guo, Guanglei Cheng, Zhaosheng Wang, Peng Gao, Yilin Wang, Kai Chen, Zhaoliang Liao
Summary: Ferromagnetic order is achieved in metallic SrIrO3 by constructing SrIrO3/ferromagnetic-insulator superlattices, exhibiting strong coercivity and perpendicular magnetic anisotropy. The Curie temperature of SrIrO3 can be controlled by engineering interface charge transfer, and noncoplanar spin texture is observed.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Yunke Zhu, Yunzhou Deng, Peng Bai, Xinan Wu, Yige Yao, Qinyun Liu, Jingjing Qiu, An Hu, Zhenyu Tang, Wenjin Yu, Yaolong Li, Pengzuo Jiang, Zhetong Liu, Peng Gao, Yanlei Hao, Wangxiao Jin, Desui Chen, Xitong Zhu, Yizheng Jin, Yunan Gao
Summary: This study demonstrates efficient, bright, and long lifetime red Nc-LEDs based on anisotropic nanocrystals. By modifying the substrate's surface properties and controlling the interactions among nanocrystals, a self-assembled layer with a high distribution of in-plane transitions dipole moment of 95% is successfully achieved, resulting in an out-coupling factor of 37%.
ADVANCED MATERIALS
(2023)
