Jing Xu

Anhui University

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Guozhen Shen

Beijing Institute of Technology

Di Chen

Sun Yat-sen University

Zhong Xie

National Research Council Canada

Hongtao Huang

Sun Yat-sen University

Yuguang Zhu

South China University of Technology

Zhuoran Wang

Chinese Academy of Sciences

Bo Liang

Peking University

Jinhua Ye

National Institute for Materials Science

Yu Ji

Xidian University

Cheng Zhong

Wuhan University

Cooperative Institutions

Chinese Academy of Sciences

Huazhong University of Science and Technology

Nanjing University of Science and Technology

Wuhan National Laboratory for Optoelectronics

Southwest University

Chongqing University

University of Chinese Academy of Sciences

Sun Yat-sen University

Nanyang Technological University

South China University of Technology

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Dopant-free hole transport materials processed with green solvent for efficient perovskite solar cells

Chemical Engineering Journal (2019)

Huiqiang Lu Bizu He Yu Ji Yahan Shan Cheng Zhong

Chlorobenzene

Tetrahydrofuran

10.1016/j.cej.2019.123976

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Citations (55)

Visible-light-driven photocatalytic and photoelectrochemical properties of porous SnSx(x = 1,2) architectures

CrystEngComm (2012)

Junfeng Chao Zhong Xie Xianbao Duan Dong Yuan Zhuoran Wang

By using a facile and template-free polyol refluxing process, we reported the successful synthesis of porous SnS and SnS2 architectures on a large scale. The as-synthesized samples were characterized by using XRD, SEM, TEM, UV-vis DRS, Raman and N2 adsorption–desorption analyses. Studies revealed that the as-synthesized SnS and SnS2 products mainly consist of porous flower-like microstructures with reasonable BET surface areas of 66 m2 g−1 and 33 m2 g−1, respectively. Photocatalytic properties of trace amounts of samples were investigated by photodegradation of MB and RhB under visible light irradiation. The photoelectrochemical properties of both samples were also studied by configuring the samples as photoelectrochemical (PEC) cells, exhibiting excellent photosensitivity and response with greatly enhanced Ion/off as high as 1.4 × 103, three orders of magnitude higher than previous work. The results indicate the potential applications of the SnSx nanostructures in visible-light-driven photocatalysts, high response photodetectors and other optoelectronic nanodevices.

Photodegradation

Visible spectrum

10.1039/c2ce06586j

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Citations (122)

Core Structure Engineering in Hole‐Transport Materials to Achieve Highly Efficient Perovskite Solar Cells

ChemSusChem (2019)

Yu Ji Bizu He Huiqiang Lu Jing Xu Rui Wang

Abstract In this work, the thiadiazolopyridine (PT) unit was introduced as the core structure, with N 3 , N 3 , N 6 , N 6 ‐tetrakis(4‐methoxyphenyl)‐9‐phenyl‐9 H ‐carbazole‐3,6‐diamine as the peripheral group, to obtain a new compound, JY8, for use as a hole‐transport material (HTM) in planar perovskite solar cells (PSCs). Compared with the previously reported JY5 with benzothiadiazole as the core structure, the PT unit with stronger electron‐withdrawing ability enhanced the intermolecular dipole–dipole interaction. Moreover, the introduction of the PT unit made the central part in JY8 more planar than its analogue JY5, which is conducive to charge transport. Field‐emission (FE)‐SEM images suggested a smooth and condense morphology of the JY8 film, which could improve the contact between the perovskite layer and the metal electrode. Space‐charge limitation of current results, steady‐state, and time‐resolved photoluminescence decay curves indicated that JY8 as HTM facilitated hole extraction and hole transport. Consequently, planar PSCs fabricated with JY8 as the HTM exhibited a decent efficiency of 19.14 % with a high fill factor of 81 %.

Electron Mobility

10.1002/cssc.201803025

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Citations (21)

Self-organized hierarchical zinc phosphide nanoribbon–zinc sulfide nanowire heterostructures

CrystEngComm (2011)

Di Chen Zhe Liu Xianfu Wang Bo Liang Jing Xu

Hierarchical Zn3P2 nanoribbon–ZnS nanowire heterostructures were synthesized by simple thermal evaporation of the mixture of ZnS and InP powders. Studies found that the synthesized hierarchical heterostructures consisted of single crystalline Zn3P2 nanoribbons with numerous single crystalline [0001]-oriented ZnS nanowires grown perpendicular to the Zn3P2 nanoribbons. The growth mechanism of the hierarchical heterostructures was investigated in detail by studying the intermediate samples synthesized at different times. Low-temperature cathodoluminescence properties of the heterostructures were investigated, where two emission bands centered at 600 nm and 790 nm were observed, corresponding to the defect-related emission of ZnS and band gap emission of Zn3P2, respectively. Single heterostructure-based devices were also fabricated to study their photoconducting properties, showing decent responses to lights with different wavelengths.

Cathodoluminescence

Zinc sulfide

Phosphide

Nanomaterials

Indium phosphide

10.1039/c1ce05666b

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Citations (7)

Flexible coaxial-type fiber supercapacitor based on NiCo2O4 nanosheets electrodes

Nano Energy (2014)

Qiufan Wang Xianfu Wang Jing Xu Xia Ouyang Xiaojuan Hou

Coaxial

Power density

Wearable Technology

10.1016/j.nanoen.2014.05.014

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Citations (261)

Controlled synthesis of monodispersed hematite microcubes and their properties

CrystEngComm (2011)

Shi Xiong Jing Xu Di Chen Rongming Wang Xianluo Hu

Hematite (α-Fe2O3) is a thermodynamically stable crystallographic phase of iron oxide and has attractive applications in many areas. By using a simple hydrothermal method, we synthesized smooth hematite microcubes and porous hematite microcubes. The as-synthesized microcubes have uniform edge lengths of about 1 μm. The magnetic, electrochemical properties and gas sensing performance to some organic gases were investigated, revealing the potential applications in various fields. By tuning the experimental parameters, such as source and solvent, we are able to tunably produce goethite (FeOOH) nanowires, and hematite nanoparticles, nanorods, and nanoplatelets and the formation mechanism was also discussed.

Nanorod

10.1039/c1ce05569k

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Citations (30)

Developing TiAlN coatings for intermediate temperature solid oxide fuel cell interconnect applications

International Journal of Hydrogen Energy (2007)

Xi Liu C. JOHNSON Chun Li Jing Xu Caleb Cross

10.1016/j.ijhydene.2007.09.007

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Citations (22)

Zinc-oleate complex as efficient precursor for 1-D ZnO nanostructures: synthesis and properties

CrystEngComm (2011)

Jing Xu Yuguang Zhu Hongtao Huang Zhong Xie Di Chen

Using a zinc-oleate complex as an efficient self-templated precursor, we report the synthesis of ZnO nanowires and olive-shaped nanorods with growth directions along the (0001) planes via a mild hydrothermal route. As-obtained ZnO products were characterized by using X-ray powder diffraction, scanning electronic microscopy, transmission electron microscopy, UV-vis absorption spectroscopy and photoluminescence spectroscopy. Compared to ZnO nanorods, long nanowires show enhanced photoactivity for methylene blue degradation under UV light irradiation. The surface wettability of the samples was also measured and the hydrophobicity of ZnO long nanowires and the hydrophilicity of ZnO olive-shaped nanorods were observed. The gas sensitivity for acetone and ethanol of both ZnO nanorods and nanowires was measured.

Nanorod

10.1039/c0ce00868k

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Citations (34)

High-performance photodetectors, photocatalysts, and gas sensors based on polyol reflux synthesized porous ZnO nanosheets

CrystEngComm (2012)

Bin Liu Jing Xu Sihan Ran Zhuoran Wang Di Chen

By using porous ZnO nanosheets, obtained from a rapid one-step polyol refluxing method, as the active material, we reported the fabrication of high performance photodetectors, photocatalysts, and gas sensors. The as fabricated photodetectors exhibited the features of high photocurrent, enhanced stability, and reproducible characteristics with the photo-to-dark current ratio as high as 1.6 × 103. The photocatalytic properties were also investigated by the photo-degradation of methylene blue under UV light irradiation. The as-synthesized porous ZnO nanosheets were able to decompose methylene blue within 20 min, which is more than twice as fast as that of ZnO nanoparticles and nanospheres. Finally, the gas sensing performance of the porous ZnO nanosheets for detecting ethanol was investigated, also revealing greater enhanced performance compared with other ZnO nanostructures.

Photocurrent

Methylene blue

10.1039/c2ce25278c

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Citations (46)

Porous WO3 with enhanced photocatalytic and selective gas sensing properties

CrystEngComm (2011)

Zhong Xie Yuguang Zhu Jing Xu Hongtao Huang Di Chen

Pure porous WO3 products consisting of 10–20 nm nanoparticles have been synthesized by controlling the hydrolysis of WCl6 in ethanol solution with the assistance of polystyrene (PS) microspheres at room temperature. The products were characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer–Emmett–Teller (BET) surface area and diffuse reflectance spectroscopy. The photocatalytic and gas-sensing properties of the porous WO3 samples were studied in detail. With large surface areas, these porous WO3 products exhibit both strong adsorption abilities and high degradation activities for methylene blue (MB) under visible light irradiation. And they also exhibit high sensitivity to organic gases (acetone, methanol, ethanol and formaldehyde), especially good selectivity to acetone at low concentration (0.5–5 ppm).

Specific surface area

Visible spectrum

Methylene blue

Powder Diffraction

BET theory

10.1039/c1ce05579h

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Citations (44)