Single
Cesium Lead Halide Perovskite Nanocrystals at Low Temperature: Fast
Single-Photon Emission, Reduced Blinking, and Exciton Fine Structure
Gabriele Rainò
Georgian Nedelcu
Loredana Protesescu
Maryna
I. Bodnarchuk
Maksym V. Kovalenko
Rainer F. Mahrt
Thilo Stöferle
10.1021/acsnano.5b07328.s001
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.
2016-01-15 00:00:00
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