Journal ArticleDOI
Band offsets and heterostructures of two-dimensional semiconductors
TLDR
In this paper, the band offsets and heterostructures of monolayer and few-layer transition-metal dichalcogenides MX2 (M = Mo, W; X = S, Se, Te) are investigated from first principles calculations.Abstract:
The band offsets and heterostructures of monolayer and few-layer transition-metal dichalcogenides MX2 (M = Mo, W; X = S, Se, Te) are investigated from first principles calculations. The band alignments between different MX2 monolayers are calculated using the vacuum level as reference, and a simple model is proposed to explain the observed chemical trends. Some of the monolayers and their heterostructures show band alignments suitable for potential applications in spontaneous water splitting, photovoltaics, and optoelectronics. The strong dependence of the band offset on the number of layers also implicates a possible way of patterning quantum structures with thickness engineering.read more
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Journal ArticleDOI
Atomically thin p–n junctions with van der Waals heterointerfaces
Chul Ho Lee,Chul Ho Lee,Gwan Hyoung Lee,Arend M. van der Zande,Wenchao Chen,Yilei Li,Minyong Han,Xu Cui,Ghidewon Arefe,Colin Nuckolls,Tony F. Heinz,Jing Guo,James Hone,Philip Kim +13 more
TL;DR: The tunnelling-assisted interlayer recombination of the majority carriers is responsible for the tunability of the electronic and optoelectronic processes in atomically thin p-n heterojunctions fabricated using van der Waals assembly of transition-metal dichalcogenides.
Journal ArticleDOI
Vertical and in-plane heterostructures from WS2/MoS2 monolayers.
Yongji Gong,Junhao Lin,Xingli Wang,Gang Shi,Sidong Lei,Zhong Lin,Xiaolong Zou,Gonglan Ye,Robert Vajtai,Boris I. Yakobson,Humberto Terrones,Mauricio Terrones,Beng Kang Tay,Jun Lou,Sokrates T. Pantelides,Zheng Liu,Wu Zhou,Pulickel M. Ajayan +17 more
TL;DR: A one-step growth strategy for the creation of high-quality vertically stacked as well as in-plane interconnected heterostructures of WS2/MoS2 via control of the growth temperature is reported.
Journal ArticleDOI
Visible-light driven heterojunction photocatalysts for water splitting – a critical review
TL;DR: Li et al. as mentioned in this paper provided an overview of the concept of heterojunction construction and more importantly, the current state-of-the-art for the efficient, visible-light driven junction water splitting photo(electro)catalysts reported over the past ten years.
Journal ArticleDOI
Ultrafast charge transfer in atomically thin MoS2/WS2 heterostructures
Xiaoping Hong,Jonghwan Kim,Su-Fei Shi,Yu Zhang,Chenhao Jin,Yinghui Sun,Sefaattin Tongay,Junqiao Wu,Yanfeng Zhang,Feng Wang +9 more
TL;DR: It is shown that hole transfer from the MoS2 layer to the WS2 layer takes place within 50 fs after optical excitation, a remarkable rate for van der Waals coupled two-dimensional layers, which can enable novel two- dimensional devices for optoelectronics and light harvesting.
References
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