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New Strategy for Black Phosphorus Crystal Growth through Ternary Clathrate

S. Li ; X. Y. Liu ; X. Fan ; Y. Z. Ni ; J. Miracle ; N. Theodoropoulou ; Jie Sun (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; S. Chen ; B. Lv ; Q. K. Yu
Crystal Growth & Design (1528-7483). Vol. 17 (2017), 12, p. 6579-6585.
[Artikel, refereegranskad vetenskaplig]

We are reporting a new synthetic strategy to grow large-sized black phosphorus (Black-P) crystals through a ternary clathrate Sn24P22-xI8, under lower synthetic temperature and pressure. The Black-P crystals are found grown in situ at the site where the solid clathrate originally resides, which suggests chemical vapor mineralizer does not play a critical role for the Black-P formation. More detailed systematical studies have indicated the P vacancies in the framework of the ternary clathrate Sn24P22-xI8 are important for the subsequent Black-P from phosphorus vapors, and a likely vapor solid solid model is responsible for the Black-P crystal growth. The obtained room temperature mobility mu is similar to 350 cm(2)/V.s from Hall measurements at mechanically cleaved flakes, where noticeable microcracks are visible. The obtained high mobility value further suggests the high quality of the Black-P crystals synthesized through this route.



Denna post skapades 2018-01-12.
CPL Pubid: 254444

 

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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik

Ämnesområden

Materialteknik

Chalmers infrastruktur