10.1021/acsnano.5b07328.s001
Gabriele Rainò
Gabriele
Rainò
Georgian Nedelcu
Georgian
Nedelcu
Loredana Protesescu
Loredana
Protesescu
Maryna
I. Bodnarchuk
Maryna
I.
Bodnarchuk
Maksym V. Kovalenko
Maksym V.
Kovalenko
Rainer F. Mahrt
Rainer F.
Mahrt
Thilo Stöferle
Thilo
Stöferle
Single
Cesium Lead Halide Perovskite Nanocrystals at Low Temperature: Fast
Single-Photon Emission, Reduced Blinking, and Exciton Fine Structure
American Chemical Society
2016
radiative decay
exciton dynamics
Halide Perovskite Nanocrystals
250 ps
light sources
Reduced Blinking
perovskite crystal structure
emission process
Single Cesium
solution processability
Low Temperature
quantum emitters
Photon antibunching
2016-01-15 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Single_Cesium_Lead_Halide_Perovskite_Nanocrystals_at_Low_Temperature_Fast_Single_Photon_Emission_Reduced_Blinking_and_Exciton_Fine_Structure/2067597
Metal-halide
semiconductors with perovskite crystal structure are attractive due
to their facile solution processability, and have recently been harnessed
very successfully for high-efficiency photovoltaics and bright light
sources. Here, we show that at low temperature single colloidal cesium
lead halide (CsPbX<sub>3</sub>, where X = Cl/Br) nanocrystals exhibit
stable, narrow-band emission with suppressed blinking and small spectral
diffusion. Photon antibunching demonstrates unambiguously nonclassical
single-photon emission with radiative decay on the order of 250 ps,
representing a significant acceleration compared to other common quantum
emitters. High-resolution spectroscopy provides insight into the complex
nature of the emission process such as the fine structure and charged
exciton dynamics.