Realization of vertical metal semiconductor heterostructures via solution phase epitaxy

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

6 Scopus Citations
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Author(s)

  • Xiaoshan Wang
  • Zhiwei Wang
  • Jindong Zhang
  • Xiang Wang
  • Zhipeng Zhang
  • Jialiang Wang
  • Zhaohua Zhu
  • Zhuoyao Li
  • Yao Liu
  • Xuefeng Hu
  • Junwen Qiu
  • Guohua Hu
  • Bo Chen
  • Ning Wang
  • Qiyuan He
  • Junze Chen
  • Jiaxu Yan
  • Wei Zhang
  • Tawfique Hasan
  • Shaozhou Li
  • Hai Li
  • Qiang Wang
  • Xiao Huang
  • Wei Huang

Detail(s)

Original languageEnglish
Article number3611
Journal / PublicationNature Communications
Volume9
Publication statusPublished - 6 Sep 2018
Externally publishedYes

Abstract

The creation of crystal phase heterostructures of transition metal chalcogenides, e.g., the 1T/2H heterostructures, has led to the formation of metal/semiconductor junctions with low potential barriers. Very differently, post-transition metal chalcogenides are semiconductors regardless of their phases. Herein, we report, based on experimental and simulation results, that alloying between 1T-SnS2 and 1T-WS2 induces a charge redistribution in Sn and W to realize metallic Sn0.5W0.5S2 nanosheets. These nanosheets are epitaxially deposited on surfaces of semiconducting SnS2 nanoplates to form vertical heterostructures. The ohmic-like contact formed at the Sn0.5W0.5S2/SnS2 heterointerface affords rapid transport of charge carriers, and allows for the fabrication of fast photodetectors. Such facile charge transfer, combined with a high surface affinity for acetone molecules, further enables their use as highly selective 100 ppb level acetone sensors. Our work suggests that combining compositional and structural control in solution-phase epitaxy holds promises for solution-processible thin-film optoelectronics and sensors.

Citation Format(s)

Realization of vertical metal semiconductor heterostructures via solution phase epitaxy. / Wang, Xiaoshan; Wang, Zhiwei; Zhang, Jindong; Wang, Xiang; Zhang, Zhipeng; Wang, Jialiang; Zhu, Zhaohua; Li, Zhuoyao; Liu, Yao; Hu, Xuefeng; Qiu, Junwen; Hu, Guohua; Chen, Bo; Wang, Ning; He, Qiyuan; Chen, Junze; Yan, Jiaxu; Zhang, Wei; Hasan, Tawfique; Li, Shaozhou; Li, Hai; Zhang, Hua; Wang, Qiang; Huang, Xiao; Huang, Wei.

In: Nature Communications, Vol. 9, 3611, 06.09.2018.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review