1k citations · 2.2k across the 11 of their papers we have counts for
11 papers
Bright triplet excitons in lead halide perovskites
Michael A. Becker, Roman Vaxenburg, Georgian Nedelcu +13
Nanostructured semiconductors emit light from electronic states known as excitons[1]. According to Hund's rules[2], the lowest energy exciton in organic materials should be a poorl…
Active bialkali photocathodes on free-standing graphene substrates
Hisato Yamaguchi, Fangze Liu, Jeffrey DeFazio +10
The hexagonal structure of graphene gives rise to the property of gas impermeability, motivating its investigation for a new application: protection of semiconductor photocathodes…
Fine structure of the band edge excitons and trions in CdSe/CdS core/shell nanocrystals
A. Shabaev, A. V. Rodina, Al. L. Efros
We present a theoretical description of excitons and positively and negatively charged trions in "giant" CdSe/CdS core-shell nanocrystals (NCs). The developed theory provides the p…
Controlling the nuclear polarization in quantum dots using optical pulses with a modest bandwidth
S. G. Carter, Sophia E. Economou, A. Shabaev +1
We show that detuned optical pulse trains with a modest spectral width can polarize nuclear spins in InAs quantum dots. The pulse bandwidth is large enough to excite a coherent sup…
Quantum simulation of multiple-exciton generation in a nanocrystal by a single photon
Wayne M. Witzel, Andrew Shabaev, C. Stephen Hellberg +2
We have shown theoretically that efficient multiple exciton generation (MEG) by a single photon can be observed in small nanocrystals (NCs). Our quantum simulations that include hu…
Control of the direction and rate of nuclear spin flips in InAs quantum dots using detuned optical pulse trains
S. G. Carter, A. Shabaev, Sophia E. Economou +3
We find that detuning an optical pulse train from electronic transitions in quantum dots controls the direction of nuclear spin flips. The optical pulse train generates electron sp…