Search

Your search keyword '"Xing, Chenyang"' showing total 211 results
Start Over Author "Xing, Chenyang"
211 results on '"Xing, Chenyang"'

8. Ultrasmall SnS2 quantum dot−based photodetectors with high responsivity and detectivity

Author

Ren Yi, An Hua, Zhang Weiguan, Wei Songrui, Xing Chenyang, and Peng Zhengchun

Subjects
pec-type photodetectors, quantum dots, tin disulfide, Physics, QC1-999
Abstract

Quantum dots (QDs) often exhibit unique behaviors because the reduction in lateral size leads to stronger quantum confinement effects and a higher surface-to-volume ratio in comparison with larger two-dimensional nanosheets. However, the preparation of homogeneous QDs remains a longstanding challenge. This work reports the preparation of high-yield and ultrasmall tin disulfide (SnS2) QDs by combining top–down and bottom–up approaches. The as-prepared SnS2 QDs have a uniform lateral size of 3.17 ± 0.62 nm and a thicknesses 2.39 ± 0.88 nm. A series of self-powered photoelectrochemical-type photodetectors (PDs) utilizing the SnS2 QDs as photoelectrodes are also constructed. Taking advantage of the tunable bandgaps and high carrier mobility of the SnS2, our PDs achieve a high photocurrent density of 16.38 μA cm−2 and a photoresponsivity of 0.86 mA W−1, and good long-term cycling stability. More importantly, the device can display obvious photoresponse, even at zero bias voltage (max), and greater weak-light sensitivity than previously reported SnS2-based PDs. Density functional theory calculation and optical absorption were employed to reveal the working mechanism of the SnS2 QDs-based PDs. This study highlights the prospective applications of ultrasmall SnS2 QDs and provides a new route towards future design of QDs-based optoelectronic devices.

Published
2022
Full Text
View/download PDF

16. A heat-triggered triboelectric nanogenerator for self-powered wireless fire alarm.

Author

Lin, Xiaobo, Su, Kangyu, Yang, Lanxin, Xing, Chenyang, Peng, Zhengchun, and Meng, Bo

Subjects
TRIBOELECTRICITY, FIRE alarms, CLEAN energy, POWER resources, ELECTRONIC equipment, SWITCHING circuits
Abstract

Power supply is playing an increasingly important role in the rapidly developing era of the Internet of Things. Achieving a sustainable and clean power supply for electronic devices is an urgent and challenging task. In this study, we present a heat-triggered triboelectric nanogenerator (TENG) and develop a self-powered fire alarm system to achieve an early warning without an external power supply. A TENG comprises a gear system that can utilize the elastic potential energy of a spring. A wax block was used as a heat trigger. When melted at high temperatures, the TENG will be triggered to work and generate considerable electric energy. Within a single operation cycle of approximately 6 s, a 22 μ F capacitor can be charged up to 3.7 V. Such electrical energy is sufficient to drive a wireless transmission module through an automatic switching circuit. Overall, this study provides a feasible approach for a self-powered wireless warning system in power-shortage areas. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

30. Ultrasmall SnS2 quantum dot−based photodetectors with high responsivity and detectivity.

Author

Ren, Yi, An, Hua, Zhang, Weiguan, Wei, Songrui, Xing, Chenyang, and Peng, Zhengchun

Subjects
QUANTUM dots, PHOTODETECTORS, QUANTUM confinement effects, OPTOELECTRONIC devices, PHOTOCATHODES, DENSITY functional theory, CHARGE carrier mobility, LIGHT absorption
Abstract

Quantum dots (QDs) often exhibit unique behaviors because the reduction in lateral size leads to stronger quantum confinement effects and a higher surface-to-volume ratio in comparison with larger two-dimensional nanosheets. However, the preparation of homogeneous QDs remains a longstanding challenge. This work reports the preparation of high-yield and ultrasmall tin disulfide (SnS2) QDs by combining top–down and bottom–up approaches. The as-prepared SnS2 QDs have a uniform lateral size of 3.17 ± 0.62 nm and a thicknesses 2.39 ± 0.88 nm. A series of self-powered photoelectrochemical-type photodetectors (PDs) utilizing the SnS2 QDs as photoelectrodes are also constructed. Taking advantage of the tunable bandgaps and high carrier mobility of the SnS2, our PDs achieve a high photocurrent density of 16.38 μA cm−2 and a photoresponsivity of 0.86 mA W−1, and good long-term cycling stability. More importantly, the device can display obvious photoresponse, even at zero bias voltage (max), and greater weak-light sensitivity than previously reported SnS2-based PDs. Density functional theory calculation and optical absorption were employed to reveal the working mechanism of the SnS2 QDs-based PDs. This study highlights the prospective applications of ultrasmall SnS2 QDs and provides a new route towards future design of QDs-based optoelectronic devices. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

32. Self-Intercepting Interference of Hydrogen-Bond Induced Flexible Hybrid Film to Facilitate Lithium Extraction

Author

Wang, Meiling, primary, Zhang, Tianyuan, additional, Meng, Zhixiang, additional, Wang, Chongji, additional, dong, weikang, additional, Liu, Jijian, additional, Yang, Su, additional, Hou, Xudong, additional, Cheng, Xiaoran, additional, Liu, Weifeng, additional, Xing, Chenyang, additional, Liu, Xuguang, additional, and Zhou, Jiadong, additional

Published
2022
Full Text
View/download PDF

34. Ultrasmall SnS2quantum dot−based photodetectors with high responsivity and detectivity

Author

Ren, Yi, An, Hua, Zhang, Weiguan, Wei, Songrui, Xing, Chenyang, and Peng, Zhengchun

Abstract

Quantum dots (QDs) often exhibit unique behaviors because the reduction in lateral size leads to stronger quantum confinement effects and a higher surface-to-volume ratio in comparison with larger two-dimensional nanosheets. However, the preparation of homogeneous QDs remains a longstanding challenge. This work reports the preparation of high-yield and ultrasmall tin disulfide (SnS2) QDs by combining top–down and bottom–up approaches. The as-prepared SnS2QDs have a uniform lateral size of 3.17 ± 0.62 nm and a thicknesses 2.39 ± 0.88 nm. A series of self-powered photoelectrochemical-type photodetectors (PDs) utilizing the SnS2QDs as photoelectrodes are also constructed. Taking advantage of the tunable bandgaps and high carrier mobility of the SnS2, our PDs achieve a high photocurrent density of 16.38 μA cm−2and a photoresponsivity of 0.86 mA W−1, and good long-term cycling stability. More importantly, the device can display obvious photoresponse, even at zero bias voltage (max), and greater weak-light sensitivity than previously reported SnS2-based PDs. Density functional theory calculation and optical absorption were employed to reveal the working mechanism of the SnS2QDs-based PDs. This study highlights the prospective applications of ultrasmall SnS2QDs and provides a new route towards future design of QDs-based optoelectronic devices.

Published
2022
Full Text
View/download PDF

37. Eradication of tumor growth by delivering novel photothermal selenium-coated tellurium nanoheterojunctions

Author

Chen, Shiyou, primary, Xing, Chenyang, additional, Huang, Dazhou, additional, Zhou, Chuanhong, additional, Ding, Bo, additional, Guo, Ziheng, additional, Peng, Zhengchun, additional, Wang, Dou, additional, Zhu, Xi, additional, Liu, Shuzhen, additional, Cai, Zhen, additional, Wu, Jieyu, additional, Zhao, Jiaqi, additional, Wu, Zongze, additional, Zhang, Yuhua, additional, Wei, Chaoying, additional, Yan, Qiaoting, additional, Wang, Hongzhong, additional, Fan, Dianyuan, additional, Liu, Liping, additional, Zhang, Han, additional, and Cao, Yihai, additional

Published
2020
Full Text
View/download PDF

42. Two-Dimensional Borophene: Properties, Fabrication, and Promising Applications

Author

Xie, Zhongjian, primary, Meng, Xiangying, additional, Li, Xiangnan, additional, Liang, Weiyuan, additional, Huang, Weichun, additional, Chen, Keqiang, additional, Chen, Jianming, additional, Xing, Chenyang, additional, Qiu, Meng, additional, Zhang, Bin, additional, Nie, Guohui, additional, Xie, Ni, additional, Yan, Xiaobing, additional, and Zhang, Han, additional

Published
2020
Full Text
View/download PDF

45. Engineering Lateral Heterojunction of Selenium‐Coated Tellurium Nanomaterials toward Highly Efficient Solar Desalination

Author

Xing, Chenyang, primary, Huang, Dazhou, additional, Chen, Shiyou, additional, Huang, Qichen, additional, Zhou, Chuanhong, additional, Peng, Zhengchun, additional, Li, Jiagen, additional, Zhu, Xi, additional, Liu, Yizhen, additional, Liu, Zhipeng, additional, Chen, Houkai, additional, Zhao, Jinlai, additional, Li, Jiangqing, additional, Liu, Liping, additional, Cheng, Faliang, additional, Fan, Dianyuan, additional, and Zhang, Han, additional

Published
2019
Full Text
View/download PDF

46. 2D GeP as a Novel Broadband Nonlinear Optical Material for Ultrafast Photonics

Author

Guo, Jia, primary, Huang, Dazhou, additional, Zhang, Yue, additional, Yao, Huizhen, additional, Wang, Yunzheng, additional, Zhang, Feng, additional, Wang, Rui, additional, Ge, Yanqi, additional, Song, Yufeng, additional, Guo, Zhinan, additional, Yang, Fumei, additional, Liu, Jiefeng, additional, Xing, Chenyang, additional, Zhai, Tianyou, additional, Fan, Dianyuan, additional, and Zhang, Han, additional

Published
2019
Full Text
View/download PDF

47. Micro‐/Nano‐Structures on Biodegradable Magnesium@PLGA and Their Cytotoxicity, Photothermal, and Anti‐Tumor Effects.

Author

Zhou, Weixiao, Zhang, Yinling, Meng, Si, Xing, Chenyang, Ma, Mingze, Liu, Zhou, Yang, Chengbin, and Kong, Tiantian

Subjects
PHOTOTHERMAL effect, DRUG carriers, GLYCOLIC acid, MICROSPHERES
Abstract

The size and structural control of particulate carriers for imaging agents and therapeutics are constant themes in designing smart delivery systems. This is motivated by the causal relationship between geometric parameters and functionalities of delivery vehicles. Here, both in vitro and in vivo, the controlling factors for cytotoxicity, photothermal, and anti‐tumor effects of biodegradable magnesium@poly(lactic‐co‐glycolic acid (Mg@PLGA) particulate carriers with different sizes and shell thicknesses are investigated. Mg@PLGA microspheres fabricated by microfluidic emulsification are shown to have higher Mg encapsulation efficiency, 87%, than nanospheres by ultrasonic homogenization, 50%. The photothermal and anti‐tumor effects of Mg@PLGA spheres are found to be dictated by their Mg content, irrelevant to size and structural features, as demonstrated in both in vitro cell assays and in vivo mice models. These results also provide important implications for designing and fabricating stimuli‐responsive drug delivery vehicles. [ABSTRACT FROM AUTHOR]

Published
2021
Full Text
View/download PDF

49. Ultrathin GeSe Nanosheets: From Systematic Synthesis to Studies of Carrier Dynamics and Applications for a High-Performance UV–Vis Photodetector

Author

Ma, Dingtao, primary, Zhao, Jinlai, additional, Wang, Rui, additional, Xing, Chenyang, additional, Li, Zhongjun, additional, Huang, Weichun, additional, Jiang, Xiantao, additional, Guo, Zhinan, additional, Luo, Zhengqian, additional, Li, Yu, additional, Li, Jianqing, additional, Luo, Shaojuan, additional, Zhang, Yupeng, additional, and Zhang, Han, additional

Published
2019
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results