R
Ruo Xi Yang
Researcher at Lawrence Berkeley National Laboratory
Publications - 28
Citations - 6936
Ruo Xi Yang is an academic researcher from Lawrence Berkeley National Laboratory. The author has contributed to research in topics: Chemistry & Medicine. The author has an hindex of 10, co-authored 14 publications receiving 4892 citations. Previous affiliations of Ruo Xi Yang include Imperial College London & University of Bath.
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Journal ArticleDOI
Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut
Loredana Protesescu,Loredana Protesescu,Sergii Yakunin,Sergii Yakunin,Maryna I. Bodnarchuk,Maryna I. Bodnarchuk,Franziska Krieg,Franziska Krieg,Riccarda Caputo,Christopher H. Hendon,Ruo Xi Yang,Aron Walsh,Maksym V. Kovalenko,Maksym V. Kovalenko +13 more
TL;DR: The compelling combination of enhanced optical properties and chemical robustness makes CsPbX3 nanocrystals appealing for optoelectronic applications, particularly for blue and green spectral regions (410–530 nm), where typical metal chalcogenide-based quantum dots suffer from photodegradation.
Journal ArticleDOI
Spontaneous Octahedral Tilting in the Cubic Inorganic Cesium Halide Perovskites CsSnX3 and CsPbX3 (X = F, Cl, Br, I)
Ruo Xi Yang,Ruo Xi Yang,Jonathan M. Skelton,E. Lora da Silva,Jarvist M. Frost,Jarvist M. Frost,Aron Walsh,Aron Walsh +7 more
TL;DR: It is demonstrated, from lattice-dynamics calculations based on quantum chemical force constants, that all of the cesium-lead and cesarium-tin halide perovskites exhibit vibrational instabilities associated with octahedral titling in their high-temperature cubic phase.
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Giant Electron-Phonon Coupling and Deep Conduction Band Resonance in Metal Halide Double Perovskite.
Julian A. Steele,Pascal Puech,Masoumeh Keshavarz,Ruo Xi Yang,Ruo Xi Yang,Subhasree Banerjee,Subhasree Banerjee,Elke Debroye,Cheol Woong Kim,Haifeng Yuan,Nam Ho Heo,Johan Vanacken,Aron Walsh,Aron Walsh,Johan Hofkens,Maarten B. J. Roeffaers +15 more
TL;DR: Deep conduction band energy levels are identified and that scattering from longitudinal optical phonons- via the Fröhlich interaction-dominates electron scattering at room temperature, manifesting within the nominally nonresonant Raman spectrum as multiphonon processes up to the fourth order.
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Assessment of polyanion (BF4− and PF6−) substitutions in hybrid halide perovskites
TL;DR: In this paper, the substitution of the X anion, producing polyanion perovskites based on hexafluorophosphate and tetrafluoroborate, was explored.
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Assessment of dynamic structural instabilities across 24 cubic inorganic halide perovskites
TL;DR: This work provides insights into the thermodynamic driving force of the instabilities and will help guide computer simulations and experimental synthesis in material screening, and obtain phonon-stable structures for each composition.