Stable Metallic 1T-WS2 Nanoribbons Intercalated with Ammonia Ions: The Correlation between Structure and Electrical/Optical Properties

Qin Liu; Xiuling Li; Zhangru Xiao; Yu Zhou; Haipin Chen; Adnan Khalil; Ting Xiang; Junqing Xu; Wangsheng Chu; Xiaojun Wu; Jinlong Yang; Chengming Wang; Yujie Xiong; Chuanhong Jin; Pulickel M Ajayan; Li Song

doi:10.1002/adma.201502134

Stable Metallic 1T-WS2 Nanoribbons Intercalated with Ammonia Ions: The Correlation between Structure and Electrical/Optical Properties

Adv Mater. 2015 Sep 2;27(33):4837-44. doi: 10.1002/adma.201502134. Epub 2015 Jul 14.

Authors

Affiliations

¹ National Synchrotron Radiation Laboratory, CAS Hefei Science Center, Hefei National Laboratory for Physical Science at the Microscale, School of Chemistry, University of Science and Technology of China, Hefei, Anhui, 230029, PR China.
² State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, Department of Materials Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310027, PR China.
³ Department of Materials Science and Nano Engineering, Rice University, Houston, TX, 77005, USA.

PMID: 26177725
DOI: 10.1002/adma.201502134

Abstract

Stable metallic 1T-WS2 nanoribbons with zigzag chain superlattices, highly stabilized by ammonia-ion intercalation, are produced using a facile bottom-up process. The atomic structure of the nanoribbons, including W-W reconstruction and W-S distorted octahedral coordination, results in distinctive electrical transport and optical Raman scattering properties that are very different from semiconducting 2H-WS2 . The correlations between structure and properties are further confirmed by theory calculations.

Keywords: 1T-WS2; ammonia-ion intercalation; electrical and optical properties; stable metallic phase; theory calculations.