Xiaobin Xu

Tongji University

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Shi‐Yao Yang

Jiangxi Science and Technology Normal University

Xun Wang

Tsinghua University

Donglei Fan

Walker (United States)

Hongbo Yuan

Hebei University of Technology

Paul S. Weiss

University of California, Los Angeles

Rong-Bin Huang

Xiamen University

Chuanzhen Zhao

Stanford University

Rong‐Bin Huang

Hong Kong University of Science and Technology

Liang Ma

Zhengzhou University

Zhicheng Zhang

Nanfang Hospital

Cooperative Institutions

Tongji University

Chinese Academy of Sciences

Zhejiang University

Tsinghua University

University of California, Los Angeles

University of Science and Technology of China

California NanoSystems Institute

The University of Texas at Austin

University of Chinese Academy of Sciences

Huazhong University of Science and Technology

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Tunable Periodic Nanopillar Array for MAPbI₃ Perovskite Photodetectors with Improved Light Absorption

ACS Omega (2024)

Zhengtong Yao Yüting Xiong Hanyue Kang Xiuzhen Xu Jianhe Guo

In the field of optoelectronic applications, the vigorous development of organic–inorganic hybrid perovskite materials, such as methylammonium lead triiodide (MAPbI3), has spurred continuous research on methods to enhance the photodetection performance. Periodic nanoarrays can effectively improve the light absorption of perovskite thin films. However, there are still challenges in fabricating tunable periodic patterned and large-area perovskite nanoarrays. In this study, we present a cost-effective and facile approach utilizing nanosphere lithography and dry etching techniques to create a large-area Si nanopillar array, which is employed for patterning MAPbI3 thin films. The scanning electron microscopy (SEM) and X-ray diffraction (XRD) results reveal that the introduction of nanopillar structures did not have a significant adverse effect on the crystallinity of the MAPbI3 thin film. Light absorption tests and optical simulations indicate that the nanopillar array enhances the light intensity within the perovskite films, leading to photodetectors with a responsivity of 11.2 A/W and a detectivity of 7.3 × 1010 Jones at 450 nm in wavelength. Compared with photodetectors without nanostructures, these photodetectors exhibit better visible light absorption. Finally, we demonstrate the application of these photodetector arrays in a prototype image sensor.

Nanopillar

10.1021/acsomega.3c07390

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Citations (1)

Synthesis of Mo-based nanostructures from organic-inorganic hybrid with enhanced electrochemical for water splitting

Science China Materials (2015)

Yong Yang Xiaobin Xu Xun Wang

Inert gas

Inert

Thermal Stability

10.1007/s40843-015-0088-4

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Citations (26)

Aptamer–field-effect transistors overcome Debye length limitations for small-molecule sensing

Science (2018)

Nako Nakatsuka Kyung-Ae Yang John M. Abendroth Kevin M. Cheung Xiaobin Xu

Transistor sensing in salt solutions Molecular binding to receptors on the surface of field-effect transistors (FETs) can be sensed through changes in transconductance. However, the saline solutions typically used with biomolecules create an electrical double layer that masks any events that occur within about 1 nanometer from the surface. Nakatsuka et al. overcame this limitation by using binding to large, negatively charged DNA stem loop structures that, upon ligand binding, cause conformational changes that can be sensed with an FET, even in solutions with high ionic strength. The authors demonstrate the sensing of charged molecules such as dopamine in artificial cerebrospinal fluid as well as neutral molecules such as glucose and zwitterion molecules like sphingosine-1-phosphate. Science , this issue p. 319

Biomolecule

Transconductance

Aptamer

10.1126/science.aao6750

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Citations (718)

Large-Scale Synthesis of SnO₂ Nanosheets with High Lithium Storage Capacity

Journal of the American Chemical Society (2009)

Cen Wang Yun Zhou Mingyuan Ge Xiaobin Xu Zaoli Zhang

In this communication, we successfully synthesized a new SnO2 nanoarchitecture: extremely thin sheets, with minimum thicknesses of 1.5−3.0 nm. The products were prepared through a facile hydrothermal treatment using tin dichloride as the precursor. Planar or scrolled SnO2 sheets were carefully examined by transmission electron microscopy. The assemblies of these sheets have a high BET surface area of 180.3 m2/g and extraordinarily large pore volume of 1.028 cm3/g. They also exhibit a high lithium storage capacity and excellent cyclability due to its nanometer-sized frame and breathable characteristic.

Nanometre

Specific surface area

10.1021/ja909321d

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Citations (636)

Monodispersed NiO nanoflowers with anomalous magnetic behavior

Nanotechnology (2010)

Mingyuan Ge Luyang Han Ulf Wiedwald Xiaobin Xu Congjian Wang

Nickel oxide (NiO) nanoflowers, prepared by thermal decomposition, exhibit anomalous magnetic properties far below the blocking temperature, i.e., a cusp in both the zero-field-cooled and field-cooled curves at about 21 K. Detailed characterization discloses that the individual NiO nanoflower consists of porous crystals with holes (1.0-1.5 nm in size) inside. We believe that the low temperature magnetic feature observed here could be a new kind of spin transition for the uncompensated spins around the holes and will trigger more studies in other nanostructured antiferromagnetic materials.

Non-blocking I/O

Nanoflower

Nickel oxide

10.1088/0957-4484/21/42/425702

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Three-dimensional multilevel porous thin graphite nanosuperstructures for Ni(OH)₂-based energy storage devices

Journal of Materials Chemistry A (2014)

Jing Ning Xiaobin Xu Chao Liu Donglei Fan

We report an innovative mechanism for the synthesis of 3-D multilevel porous graphite superstructures using strategically engineered Cu–Ni catalysts. The 3-D thin-graphite nanostructures with two levels of porosity were synthesized by using porous nickel–copper (Ni–Cu) catalysts—engineered from Ni foams via an electrodeposition/etching process. The as-grown graphite is 3-D, multilevel porous, freestanding, and flexible after selective etching of the catalysts. The graphite coated with thin nickel hydroxide nanoplates [Ni(OH)2] was applied as electrodes for alkaline batteries. The electrodes are binder-free and offer a remarkable discharge capacity of ∼480 mA h g−1 at a rate of 1.5 A g−1. Compared to previous reports, they also exhibit excellent cyclability with 97.5% capacitance retention after 4000 cycles. The high performance of the electrodes of porous graphite/Ni(OH)2 could be attributed to the large specific surface area, excellent crystalline quality, controlled Ni(OH)2 nanocrystalline assemblies, and high electric conductivity. Overall, the reported mechanism for the synthesis of 3-D porous graphite is the first of its kind, which may potentially spur a new paradigm for manufacturing 3-D porous graphene/graphite materials for an array of energy storage applications.

Nanocrystalline material

10.1039/c4ta02617a

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Citations (40)

CCDC 288283: Experimental Crystal Structure Determination

The Cambridge Structural Database (2007)

Xiaobin Xu Li Yang Yanyang Qu Lixin Li Xiangge Zhou

An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.

10.5517/cc9nzgc

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5-tert-Butylbenzene-1,3-dicarboxylic acid

Acta Crystallographica Section E Structure Reports Online (2007)

Xiaobin Xu Feifei Lan Shi‐Yao Yang Rong‐Bin Huang Seik Weng Ng

通讯作者地址: Ng,SW(通讯作者),Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 地址: 1. Xiamen Univ, Dept Chem, Coll Chem & Chem Engn, Xiamen 361005, Peoples R China 2. Univ Malaya, Dept Chem, Kuala Lumpur 50603, Malaysia 电子邮件地址: seikweng@um.edu.my

Dicarboxylic acid

10.1107/s1600536807038408

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Citations (1)

Nickel Diselenide Ultrathin Nanowires Decorated with Amorphous Nickel Oxide Nanoparticles for Enhanced Water Splitting Electrocatalysis

Small (2017)

Haoyi Li Shuangming Chen Haifeng Lin Xiaobin Xu Haozhou Yang

Well‐designed hybrid materials based on noble metal‐free elements have great potential to generate hydrogen (H 2 ) and oxygen (O 2 ) sustainably via overall water splitting for developing practical energy‐related technologies. Herein, an accessible method is presented to synthesize nickel diselenide (NiSe 2 ) ultrathin nanowires decorated with amorphous nickel oxide nanoparticles (NiO x NPs) as multifunctional electrocatalysts (NSWANs) for hydrogen and oxygen evolution reaction (HER and OER). The NSWANs exhibit quite low HER and OER overpotentials of 174 and 295 mV, respectively, holding the current density of 20 mA cm −2 for 24 h continuous operations in alkaline media. Meanwhile, a cell voltage of 1.547 V at the current density of 10 mA cm −2 for overall water splitting has been achieved by the NSWANs for the practical application, which could maintain fascinating activity of 20 mA cm −2 for 72 h without degradation. The decorated NiO x NPs not only prevent the NiSe 2 from further oxidation but also expose requisite active sites for electrocatalytic process. It is believed that this study may provide a valuable strategy to design high‐efficiency electrocatalysts and expand the applications of selenide‐based materials.

Diselenide

Oxygen evolution

Non-blocking I/O

Nickel oxide

Selenide

10.1002/smll.201701487

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Citations (104)

CCDC 651057: Experimental Crystal Structure Determination

The Cambridge Structural Database (2010)

Xiaobin Xu Feifei Lan Shi‐Yao Yang Ming Li Rong-Bin Huang

10.5517/ccpvgvt

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