D
Dezheng Sun
Researcher at Columbia University
Publications - 34
Citations - 3662
Dezheng Sun is an academic researcher from Columbia University. The author has contributed to research in topics: Monolayer & Molybdenum disulfide. The author has an hindex of 21, co-authored 34 publications receiving 3135 citations. Previous affiliations of Dezheng Sun include University of California, Berkeley & SLAC National Accelerator Laboratory.
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Journal ArticleDOI
Synthesis and Efficient Visible Light Photocatalytic Hydrogen Evolution of Polymeric g-C3N4 Coupled with CdS Quantum Dots
TL;DR: In this article, the effect of CdS content on the rate of visible light photocatalytic hydrogen evolution was investigated for different loadings using platinum as a cocatalyst in methanol aqueous solutions.
Journal ArticleDOI
Observation of Rapid Exciton–Exciton Annihilation in Monolayer Molybdenum Disulfide
Dezheng Sun,Yi Rao,Yi Rao,Georg A. Reider,Gugang Chen,Yumeng You,Louis Brézin,Avetik R. Harutyunyan,Tony F. Heinz +8 more
TL;DR: The existence of efficient exciton-exciton annihilation, a four-body interaction, in Monolayer MoS2 is reported, a direct-gap two-dimensional semiconductor that exhibits strong electron-hole interactions, leading to the formation of stable excitons and trions.
Journal ArticleDOI
2-dimensional transition metal dichalcogenides with tunable direct band gaps: MoS₂(₁-x) Se₂x monolayers.
John Mann,Quan Ma,Patrick Odenthal,Miguel Isarraraz,Duy Le,Edwin Preciado,David Barroso,Koichi Yamaguchi,Gretel von Son Palacio,Andrew Nguyen,Tai Tran,Michelle Wurch,Ariana E. Nguyen,Velveth Klee,Sarah Bobek,Dezheng Sun,Dezheng Sun,Tony F. Heinz,Talat S. Rahman,Roland Kawakami,Ludwig Bartels +20 more
TL;DR: MoS2(1-x) Se2x single-layer films are prepared using a mixture of organic selenium and sulfur precursors as well as a solid molybdenum source permitting straightforward bandgap engineering.
Journal Article
Observation of Rapid Exciton-Exciton Annihilation in Monolayer Molybdenum Disulfide
Dezheng Sun,Yi Rao,Georg A. Reider,Gugang Chen,Yumeng You,Louis Br 'ezin,Avetik Harutyunyan,Tony F. Heinz +7 more
TL;DR: In this article, the existence of efficient exciton-exciton annihilation, a four-body interaction, in monolayer MoS2 was identified experimentally in ultrafast transient absorption measurements through the emergence of a decay channel varying quadratically with exciton density.
Journal ArticleDOI
Measurement of Lateral and Interfacial Thermal Conductivity of Single- and Bilayer MoS2 and MoSe2 Using Refined Optothermal Raman Technique.
Xian Zhang,Dezheng Sun,Yilei Li,Gwan Hyoung Lee,Xu Cui,Daniel Chenet,Yumeng You,Tony F. Heinz,James Hone +8 more
TL;DR: In this paper, a refined version of the optothermal Raman technique was used to measure the thermal transport properties of two transition metal dichalcogenides (TMDCs) in single-layer (1L) and bilayer (2L) forms.