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Weng Hong Sio
Researcher at University of Oxford
Publications - 10
Citations - 1314
Weng Hong Sio is an academic researcher from University of Oxford. The author has contributed to research in topics: Band gap & Direct and indirect band gaps. The author has an hindex of 4, co-authored 4 publications receiving 855 citations.
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Journal ArticleDOI
Cs2InAgCl6: A New Lead-Free Halide Double Perovskite with Direct Band Gap.
George Volonakis,Amir A. Haghighirad,Rebecca L. Milot,Weng Hong Sio,Marina R. Filip,Bernard Wenger,Michael B. Johnston,Laura M. Herz,Henry J. Snaith,Feliciano Giustino +9 more
TL;DR: This work proposes a new class of halide double perovskites, where the B3+ and B+ cations are In 3+ and Ag+, respectively, and attempts to synthesize Cs2InAgCl6 and Cs1InAgBr6, and succeeds to form the hitherto unknown double perOVskite Cs 2InAgcl6.
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Cs$_2$InAgCl$_6$: A new lead-free halide double perovskite with direct band gap
George Volonakis,Amir A. Haghighirad,Rebecca L. Milot,Weng Hong Sio,Marina R. Filip,Bernard Wenger,Michael B. Johnston,Laura M. Herz,Henry J. Snaith,Feliciano Giustino +9 more
TL;DR: In this article, the authors proposed a new class of halide double perovskites, where the B$^{3+}$ and B$€ 2+} cations are In$^{2+} and Ag$^{+}, respectively.
Journal ArticleDOI
Ab initio theory of polarons: Formalism and applications
TL;DR: In this article, the ground-state energy and wave functions of electron and hole polarons in semiconductors and insulators were determined without performing explicit supercell calculations, and the authors developed the theory and computational methodology required to determine the groundstate energy, wave function, and wave function of polarons.
Journal ArticleDOI
Polarons from First Principles, without Supercells
TL;DR: It is shown that the approach describes seamlessly large and small polarons, and its capability is illustrated by calculating wave functions, formation energies, and spectral decomposition of polarons in LiF and Li_{2}O_{2}.
Journal ArticleDOI
Unified Approach to Polarons and Phonon-Induced Band Structure Renormalization.
Jon Lafuente-Bartolome,Chao Lian,Weng Hong Sio,Idoia G. Gurtubay,Asier Eiguren,Feliciano Giustino +5 more
TL;DR: In this article , a self-consistent, many-body Green's function theory of band structure renormalization was proposed to describe materials where electrons form localized polarons, and the authors showed that the present approach reduces to the Allen-Heine theory in the weak-coupling limit, and to total energy calculations of self-trapped polarons in the strong coupling limit.