期刊
CRYSTAL GROWTH & DESIGN
卷 17, 期 12, 页码 6579-6585出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.7b01239
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资金
- U.S. Air Force Office of Scientific Research [FA9550-15-1-0236]
- University of Texas at Dallas
- 2D Carbon Technology
- Texas State University
- China Scholarship Council
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1255629] Funding Source: National Science Foundation
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.
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