Premium
Structure and Properties of Violet Phosphorus and Its Phosphorene Exfoliation
Author(s) -
Zhang Lihui,
Huang Hongyang,
Zhang Bo,
Gu Mengyue,
Zhao Dan,
Zhao Xuewen,
Li Longren,
Zhou Jun,
Wu Kai,
Cheng Yonghong,
Zhang Jinying
Publication year - 2020
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201912761
Subject(s) - phosphorene , monoclinic crystal system , exfoliation joint , black phosphorus , crystal violet , phosphorus , band gap , crystal structure , materials science , crystallography , methyl violet , lattice constant , diffraction , chemistry , nanotechnology , optoelectronics , optics , adsorption , physics , graphene , metallurgy , medicine , pathology
Black phosphorene has attracted much attention as a semiconducting two‐dimensional material. Violet phosphorus is another layered semiconducting phosphorus allotrope with unique electronic and optoelectronic properties. However, no confirmed violet crystals or reliable lattice structure of violet phosphorus had been obtained. Now, violet phosphorus single crystals were produced and the lattice structure has been obtained by single‐crystal x ‐ray diffraction to be monoclinic with space group of P 2/ n (13) ( a =9.210, b =9.128, c =21.893 Å, β =97.776°). The lattice structure obtained was confirmed to be reliable and stable. The optical band gap of violet phosphorus is around 1.7 eV, which is slightly larger than the calculated value. The thermal decomposition temperature was 52 °C higher than its black phosphorus counterpart, which was assumed to be the most stable form. Violet phosphorene was easily obtained by both mechanical and solution exfoliation under ambient conditions.