By Patrick Parkinson in Import 2022-12-08 21:42 —

New Paper - Effect of size on the luminescent efficiency of perovskite nanocrystals

A new paper led by groups at Cambridge has been published in ACS Applied Energy Materials. In this work, a combination of nanoscale cathodoluminescence and time- and energy-resolved photoluminescence is used to reveal energy dynamics in colloidal perovskite nanocrystals. These techniques relate trap density and Auger effects to stoichiometry and size, providing a new route to optimization of these new materials.

In this study, group student Arturo carried out and prepare power dependant photoluminescence studies using tools in our group.

(a) ADF-STEM imagery of mixed colloidal perovskite nanocrstals along with (b) EELS and (c) Nano-cathodoluminescence.

Reference: “Effect of size on the luminescent efficiency of perovskite nanocrystals”, Griffiths et al., ACS Applied Energy Materials, 2019, DOI: 10.1021/acsaem.8b02132