Electronic Properties of Free-Standing Surfactant-Capped
Lead Halide Perovskite Nanocrystals Isolated in Vacuo
Aleksandar R. Milosavljević
Dušan K. Božanić
Subha Sadhu
Nenad Vukmirović
Radovan Dojčilović
Pitambar Sapkota
Weixin Huang
John Bozek
Christophe Nicolas
Laurent Nahon
Sylwia Ptasinska
10.1021/acs.jpclett.8b01466.s001
https://acs.figshare.com/articles/journal_contribution/Electronic_Properties_of_Free-Standing_Surfactant-Capped_Lead_Halide_Perovskite_Nanocrystals_Isolated_in_Vacuo/6584018
We
report an investigation of lead halide perovskite CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> nanocrystals and associated ligand
molecules by combining several different state-of-the-art experimental
techniques, including synchrotron radiation-based XPS and VUV PES
of free-standing nanocrystals isolated in vacuum. By using this novel
approach for perovskite materials, we could directly obtain complete
band alignment to vacuum of both CH<sub>3</sub>NH<sub>3</sub>PbBr<sub>3</sub> nanocrystals and the ligands widely used in their preparation.
We discuss the possible influence of the ligand molecules to apparent
perovskite properties, and we compare the electronic properties of
nanocrystals to those of bulk material. The experimental results were
supported by DFT calculations.
2018-06-14 00:00:00
halide perovskite CH 3 NH 3 PbBr 3 nanocrystals
PES
VUV
ligand molecules
synchrotron radiation-based XPS
Halide Perovskite Nanocrystals
DFT
material
CH 3 NH 3 PbBr 3 nanocrystals