Two-Dimensionally Grown Single-Crystal Silicon Nanosheets with Tunable Visible-Light Emissions
SCIE
SCOPUS
- Title
- Two-Dimensionally Grown Single-Crystal Silicon Nanosheets with Tunable Visible-Light Emissions
- Authors
- Kim, SW; Lee, J; Sung, JH; Seo, DJ; Kim, I; Jo, MH; Kwon, BW; Choi, WK; Choi, HJ
- Date Issued
- 2014-07
- Publisher
- American Chemical Society
- Abstract
- Since the discovery of graphene, growth of two-dimensional (2D) nanomaterials has greatly attracted attention. However, spontaneous growth of atomic two-dimensional (2D) materials is limitedly permitted for several layered-structure crystals, such as graphene, MoS2, and h-BN, and otherwise it is notoriously difficult. Here we report the gas-phase 2D growth of silicon (Si), that is cubic in symmetry, via dendritic growth and an interdendritic filling mechanism and to form Si nanosheets (SiNSs) of 1 to 13 nm in thickness. Thin SiNSs show strong thickness-dependent photoluminescence in visible range including red, green, and blue (RGB) emissions with the associated band gap energies ranging from 1.6 to 3.2 eV; these emission energies were greater than those from Si quantum dots (SiQDs) of the similar sizes. We also demonstrated that electrically driven white, as well as blue, emission in a conventional organic light-emitting diode (OLED) geometry with the SiNS assembly as the active emitting layers. Tunable light emissions in visible range in our observations suggest practical implications for novel 2D Si nanophotonics.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/13539
- DOI
- 10.1021/NN501683F
- ISSN
- 1936-0851
- Article Type
- Article
- Citation
- ACS Nano, vol. 8, no. 7, page. 6556 - 6562, 2014-07
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- There are no files associated with this item.
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