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cond-mat.mes-hall2016★ 48 cited
Many-body effects in nonlinear optical responses of 2D layered semiconductors
Grant Aivazian, Hongyi Yu, Sanfeng Wu +5
We performed ultrafast degenerate pump-probe spectroscopy on monolayer WSe2 near its exciton resonance. The observed differential reflectance signals exhibit signatures of strong m…
cond-mat.mes-hall2016
Multiple Hot-Carrier Collection in Photo-Excited Graphene Moire Superlattices
Sanfeng Wu, Lei Wang, You Lai +10
In conventional light harvesting devices, the absorption of a single photon only excites one electron, which sets the standard limit of power-conversion efficiency, such as the Sho…