期刊
JOURNAL OF MATERIALS CHEMISTRY C
卷 6, 期 11, 页码 2854-2861出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8tc00079d
关键词
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资金
- National Natural Science Foundation of China [51631004, 61674069]
- JLUSTIRT
- Program for Innovative Research Team (in Science and Technology) in University of Jilin Province
- National Key Research and Development Project of China [2016YFB0400100]
- Fundamental Research Funds for the Central Universities
The predictions of a new series of two-dimensional (2D) materials, namely, arsenene and antimonene have enriched the field of nano-electronic devices-fabrication. However, the indirect band gap character of the pristine structures slows down the pace of their practical applications. Herein, we prepared and studied novel monolayer AsxSby alloys with excellent stabilities (where x and y denote the atomic ratio of As and Sb elements and x + y = 16). The results indicate that some of the components possess direct band gaps. Moreover, the low effective masses (lower than 0.2m(0), where m(0) is the static electron mass) of the alloys, which enhanced the device efficiency, were also identified. In particular, a-phase AsxSby (5 <= y <= 9) harbors effective masses even lower than phosphorene. Our predictions not only inject new vigor into 2D alloys, enriching the candidate materials available in this field, but also highlight the potential of these alloys as fascinating materials for future non-electronic devices.
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