Y
Yi Rao
Researcher at Utah State University
Publications - 91
Citations - 4736
Yi Rao is an academic researcher from Utah State University. The author has contributed to research in topics: Catalysis & Chemistry. The author has an hindex of 21, co-authored 76 publications receiving 3802 citations. Previous affiliations of Yi Rao include Temple University & Chinese Academy of Sciences.
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Probing symmetry properties of few-layer MoS2 and h-BN by optical second-harmonic generation.
TL;DR: Values for the nonlinearity of monolayers and odd-layers of MoS2 and h-BN are reported and the variation as a function of layer thickness is compared with a model that accounts for wave propagation effects.
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Quantitative spectral and orientational analysis in surface sum frequency generation vibrational spectroscopy (SFG-VS)
TL;DR: In this article, the authors make assessments of the limitations, issues and techniques as well as methodologies in quantitative orientational and spectral analysis with sum frequency generation vibrational spectroscopy (SFG-VS).
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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 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.