Journal
NATURE NANOTECHNOLOGY
Volume 9, Issue 12, Pages 1024-1030Publisher
NATURE RESEARCH
DOI: 10.1038/NNANO.2014.222
Keywords
-
Funding
- National Basic Research Program of China [2012CB932703]
- National Natural Science Foundation of China [11374092, 21025521, 21221003]
- National Institutes of Health [1DP2OD007279]
- National Science Foundation [0956171]
- Direct For Mathematical & Physical Scien [0956171] Funding Source: National Science Foundation
- Division Of Materials Research [0956171] Funding Source: National Science Foundation
Ask authors/readers for more resources
Two-dimensional layered semiconductors such as MoS2 and WSe2 have attracted considerable interest in recent times. Exploring the full potential of these layered materials requires precise spatial modulation of their chemical composition and electronic properties to create well-defined heterostructures. Here, we report the growth of compositionally modulated MoS2-MoSe2 and WS2-WSe2 lateral heterostructures by in situ modulation of the vapour-phase reactants during growth of these two-dimensional crystals. Raman and photoluminescence mapping studies demonstrate that the resulting heterostructure nanosheets exhibit clear structural and optical modulation. Transmission electron microscopy and elemental mapping studies reveal a single crystalline structure with opposite modulation of sulphur and selenium distributions across the heterostructure interface. Electrical transport studies demonstrate that the WSe2-WS2 heterojunctions form lateral p-n diodes and photodiodes, and can be used to create complementary inverters with high voltage gain. Our study is an important advance in the development of layered semiconductor heterostructures, an essential step towards achieving functional electronics and optoelectronics.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available