Anthracene-assisted inverse transport growth and superconductivity at 3.3 K in unsupported ultrathin {110} Nb and {0001} NbSe2 nanoplates. Issue 37 (18th September 2017)

• Record Type: Journal Article
• Authors: Li, Jian-Min; Fang, Jie
• Is Part Of: Journal of materials chemistry. Volume 5:Issue 37(2017)
• Page Start: 9545
• Page End: 9551
• Publication Date: 2017-09-18
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c7tc03736h
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : High-quality ultrathin {0001} NbSe2 and {110} Nb nanoplates via anthracene vapor-assisted hierarchical collapse of constituent NbSe2 . Abstract : An anthracene vapor-assisted inverse transport growth mechanism of unsupported ultrathin two-dimensional (2D) superconducting single-crystal niobium (Nb) and niobium diselenide (NbSe2 ) nanoplates (thickness ∼2.5 nm) using anthracene and NbSe2 powders as precursors is reported. Besides the whisker-like counterparts, the anthracene vapor hierarchical invasion into NbSe2 leads to 2D Nb nanoplates with a {110} surface and 2D few-layered {0001} NbSe2 nanoplates grown in the high-temperature residual region, while sub-millimeter selenium whiskers are found in the low-temperature transporting region. Direct magnetization measurements demonstrated that superconductivity at ∼3.3 K was clearly observed in the unsupported ultrathin Nb and NbSe2 nanoplates. These findings may offer a new way to produce freestanding single-crystal 2D superconductors and elemental 2D metallic nanoplates.