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cond-mat.mes-hall2021
Near-unity radiative quantum efficiency of excitons in carbon nanotubes
H. Machiya, D. Yamashita, A. Ishii +1
The efficiencies of photonic devices are primarily governed by radiative quantum efficiency, which is a property given by the light emitting material. Quantitative characterization…
cond-mat.mes-hall2019
High efficiency dark-to-bright exciton conversion in carbon nanotubes
A. Ishii, H. Machiya, Y. K. Kato
We report that dark excitons can have a large contribution to the emission intensity in carbon nanotubes due to an efficient exciton conversion from a dark state to a bright state.…
cond-mat.mes-hall2018
Enhanced single photon emission from carbon nanotube dopant states coupled to silicon microcavities
A. Ishii, X. He, N. F. Hartmann +4
Single-walled carbon nanotubes are a promising material as quantum light sources at room temperature and as nanoscale light sources for integrated photonic circuits on silicon. Her…