P
Ping-Heng Tan
Researcher at Chinese Academy of Sciences
Publications - 284
Citations - 24629
Ping-Heng Tan is an academic researcher from Chinese Academy of Sciences. The author has contributed to research in topics: Raman spectroscopy & Phonon. The author has an hindex of 59, co-authored 244 publications receiving 20295 citations. Previous affiliations of Ping-Heng Tan include Peking University & Technische Universität München.
Papers
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Journal ArticleDOI
Valley-selective circular dichroism of monolayer molybdenum disulphide
Ting Cao,Gang Wang,Wen-Peng Han,Huiqi Ye,Chuanrui Zhu,Junren Shi,Qian Niu,Qian Niu,Ping-Heng Tan,Enge Wang,Baoli Liu,Ji Feng +11 more
TL;DR: It is shown, using first principles calculations, that monolayer molybdenum disulphide is an ideal material for valleytronics, for which valley polarization is achievable via valley-selective circular dichroism arising from its unique symmetry.
Journal ArticleDOI
Evolution of Electronic Structure in Atomically Thin Sheets of WS2 and WSe2
Weijie Zhao,Zohreh Ghorannevis,Leiqiang Chu,Minglin Toh,Christian Kloc,Ping-Heng Tan,Goki Eda +6 more
TL;DR: In this paper, the authors report differential reflectance and PL spectra of mono-to-few-layer Molybdenum disulfide (MoS2) and WSe2 that indicate that the band structure of these materials undergoes similar indirect-todirect gap transition when thinned to a single monolayer.
Journal ArticleDOI
Evolution of Electronic Structure in Atomically Thin Sheets of WS2 and WSe2
Weijie Zhao,Zohreh Ghorannevis,Leiqiang Chua,Minglin Toh,Christian Kloc,Ping-Heng Tan,Goki Eda +6 more
TL;DR: In this paper, differential reflectance and photoluminescence spectra of mono- to few-layer Molybdenum disulphide (MoS2) and WSe2 were analyzed.
Journal ArticleDOI
Raman spectroscopy of graphene-based materials and its applications in related devices.
TL;DR: The essential Raman scattering processes of the entire first- and second-order modes in intrinsic graphene are described and the extensive capabilities of Raman spectroscopy for the investigation of the fundamental properties of graphene under external perturbations are described.
Journal ArticleDOI
Nanotube–Polymer Composites for Ultrafast Photonics
Tawfique Hasan,Zhipei Sun,Fengqiu Wang,Francesco Bonaccorso,Ping-Heng Tan,Aleksey Rozhin,Andrea C. Ferrari +6 more
TL;DR: In this paper, the authors review various aspects of fabrication, characterization, device implementation and operation of carbon nanotube-polymer composites to be used in photonic applications.