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Featured researches published by Qinyu Wang.


RSC Advances | 2013

A self-powered strain senor based on a ZnO/PEDOT:PSS hybrid structure

Zengze Wang; Junjie Qi; Xiaoqin Yan; Qi Zhang; Qinyu Wang; Shengnan Lu; Pei Lin; Qingliang Liao; Zheng Zhang; Yue Zhang

We report a self-powered strain sensor based on ZnO/PEDOT:PSS hybrid structure on a flexible polystyrene substrate. The electrical transport of the hybrid structure was modulated by the strain. The sensitivity of the fabricated device is enhanced to 1.0 × 104 under solar light, due to the piezo-phototronic effect of ZnO. The possible mechanism was discussed using energy band diagrams.


CrystEngComm | 2010

Controllable synthesis of well-dispersed and uniform-sized single crystalline zinc hydroxystannate nanocubes

Zi Qin; Yunhua Huang; Qinyu Wang; Junjie Qi; Xiujun Xing; Yue Zhang

Single crystalline zinc hydroxystannate (ZnSn(OH)6) nanocubes have been synthesized on α-{Cu,Sn} copper foils by a low-temperature hydrothermal method. The obtained ZnSn(OH)6 nanocubes have the cubic perovskite crystalline structure and uniform arrangement on the substrate. The possible growth process of the ZnSn(OH)6 crystalline is proposed. The well-dispersed distribution and uniform size of the ZnSn(OH)6 cubes are successfully achieved thanks to the substrate which plays an important role to control the nucleation site and provide Sn4+ ions. The size of the cubes can be adjusted from nanometre to micrometre scale by prolonging the reaction time. After the secondary nucleation, a novel morphology of mother–daughter double cubes was formed. The decomposition of ZnSn(OH)6 cubes annealed at high temperature is also investigated, and interesting hollow-shaped morphology changes are discovered. This method will be useful for the controllable fabrication of nanomaterials and potential applications in nanoscale devices.


RSC Advances | 2014

Fast sensitization process of ZnO-nanorod-array electrodes by electrophoresis for dye-sensitized solar cells

Guangjie Zhang; Qingliang Liao; Zi Qin; Zheng Zhang; Xiaohui Zhang; Peifeng Li; Qinyu Wang; Shuo Liu; Yue Zhang

A novel electrophoresis based dye adsorption technique is developed for the process of ZnO-nanorod-array dye-sensitized solar cells (DSSC). By applying a constant current electrophoresis procedure, ZnO electrodes were successfully sensitized by N719 dye, and the effects of varying the electrophoretic current and duration time on the performance of DSSC were investigated. It is found that abundant dye adsorption can be obtained within significantly reduced sensitization time by electrophoresis compared to standard immersion method. Thicker ZnO-nanorod-array film and lower electrophoretic current requires longer electrophoresis time to reach the optimal sensitization effect, while very long sensitization time will result in dye agglomeration, which is harmful to the performance of DSSC. The fast dye adsorption process is more advantageous as the ZnO-nanorod-array film becomes thicker because dye molecules can readily penetrate into the depth of ZnO film in a very short time, during which the formation of Zn2+/dye complex can be suppressed.


Proceedings of the 4th International Conference on One-Dimensional Nanomaterials (ICON2011) | 2012

EFFECT OF LOCALIZED UV IRRADIATION ON TRANSPORT PROPERTY IN ZNO NANOTETRAPOD DEVICES

Wenhua Wang; Junjie Qi; Qinyu Wang; Zi Qin; Zengze Wang; Xu Sun; Fang Yi

Semiconductor optoelectronic devices based on a single ZnO nanotetrapod were constructed with Ohmic contact characteristics and the effect of localized UV irradiation on transport property in ZnO nanotetrapod device has been investigated. The measurements for the I-V characteristics and time-resolved measurements of current were conducted. The results indicate that the irradiation under UV light irradiation at the third leg of the tetrapod can readily tune the electrical transport property of the tetrapod along with favorable repeatability and reversibility. The current becomes larger as the UV light power density increases. A probable mechanism has been proposed and discussed. The ZnO nanotetrapod could be potentially used as detectors in irradiation environments.


Advanced Functional Materials | 2016

A Highly Stretchable ZnO@Fiber‐Based Multifunctional Nanosensor for Strain/Temperature/UV Detection

Xinqin Liao; Qingliang Liao; Zheng Zhang; Xiaoqin Yan; Qijie Liang; Qinyu Wang; Minghua Li; Yue Zhang


Nanoscale | 2013

Single ZnO nanotetrapod-based sensors for monitoring localized UV irradiation

Wenhua Wang; Junjie Qi; Qinyu Wang; Yunhua Huang; Qingliang Liao; Yue Zhang


Journal of Physical Chemistry C | 2012

Transport Property Tuned by Gate Irradiation in ZnO Nanotetrapod Devices

Wenhua Wang; Junjie Qi; Zi Qin; Qinyu Wang; Xu Sun; Yue Zhang


Journal of Power Sources | 2011

Characterization of Ba1.0Sr1.0FeO4+δ cathode on La0.9Sr0.1Ga0.8Mg0.2O3−δ electrolyte for intermediate temperature solid oxide fuel cells

Yanping Yin; Bangwu Liu; Junjie Qi; Yousong Gu; Qingliang Liao; Zi Qin; Zhanqiang Li; Qinyu Wang; Yue Zhang


RSC Advances | 2018

Enhanced field emission properties of graphene-based cathodes fabricated by ultrasonic atomization spray

Qinyu Wang; Zheng Zhang; Qingliang Liao; Zhuo Kang; Yue Zhang


Proceedings of the 4th International Conference on One-Dimensional Nanomaterials (ICON2011) | 2012

INFLUENCES OF HYDROTHERMAL CONDITIONS ON MORPHOLOGIES OF ZNO NANOWIRE ARRAYS

Zi Qin; Yunhua Huang; Qinyu Wang; Guangjie Zhang

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Yue Zhang

University of Science and Technology Beijing

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Junjie Qi

University of Science and Technology Beijing

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Qingliang Liao

University of Science and Technology Beijing

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Zi Qin

University of Science and Technology Beijing

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Zheng Zhang

University of Science and Technology Beijing

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Wenhua Wang

University of Science and Technology Beijing

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Yunhua Huang

University of Science and Technology Beijing

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Bangwu Liu

University of Science and Technology Beijing

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Guangjie Zhang

University of Science and Technology Beijing

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Xiaoqin Yan

University of Science and Technology Beijing

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