Physics

Attenuation coefficient

Inductively coupled plasma mass spectrometry

Nanotechnology

Nanocrystal

Crystallography

Analytical Chemistry (journal)

Optics

Absorption (acoustics)

Absorption spectroscopy

Perovskite (structure)

Transmission electron microscopy

Physical chemistry

Composite material

Mass spectrometry

Chemistry

Materials science

Spectroscopy

Colloid

Quantum mechanics

Chromatography

The Journal of Physical Chemistry Letters

Inductively coupled plasma mass spectrometry (ICP-MS) was combined with UV-vis absorption spectroscopy and transmission electron microscopy to determine the size, composition, and intrinsic absorption coefficient μi of 4 to 11 nm sized colloidal CsPbBr3 nanocrystals (NCs). The ICP-MS measurements demonstrate the nonstoichiometric nature of the NCs, with a systematic excess of lead for all samples studied. Rutherford backscattering measurements indicate that this enrichment in lead concurs with a relative increase in the bromide content. At high photon energies, μi is independent of the nanocrystal size. This allows the nanocrystal concentration in CsPbBr3 nanocolloids to be readily obtained by a combination of absorption spectroscopy and the CsPbBr3 sizing curve.

Light Absorption Coefficient of CsPbBr<sub>3</sub> Perovskite Nanocrystals

Light Absorption Coefficient of CsPbBr3 Perovskite Nanocrystals

Light Absorption Coefficient of CsPbBr₃ Perovskite Nanocrystals