Qinyu Wang
University of Science and Technology Beijing
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Featured researches published by Qinyu Wang.
RSC Advances | 2013
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
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
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
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
Xinqin Liao; Qingliang Liao; Zheng Zhang; Xiaoqin Yan; Qijie Liang; Qinyu Wang; Minghua Li; Yue Zhang
Nanoscale | 2013
Wenhua Wang; Junjie Qi; Qinyu Wang; Yunhua Huang; Qingliang Liao; Yue Zhang
Journal of Physical Chemistry C | 2012
Wenhua Wang; Junjie Qi; Zi Qin; Qinyu Wang; Xu Sun; Yue Zhang
Journal of Power Sources | 2011
Yanping Yin; Bangwu Liu; Junjie Qi; Yousong Gu; Qingliang Liao; Zi Qin; Zhanqiang Li; Qinyu Wang; Yue Zhang
RSC Advances | 2018
Qinyu Wang; Zheng Zhang; Qingliang Liao; Zhuo Kang; Yue Zhang
Proceedings of the 4th International Conference on One-Dimensional Nanomaterials (ICON2011) | 2012
Zi Qin; Yunhua Huang; Qinyu Wang; Guangjie Zhang