Seeing is believing: Correlating optoelectronic functionality with atomic scale imaging of single semiconductor nanocrystals

Yonatan Ossia, Adar Levi, Nadav Chefetz, Amir Peleg, Sergei Remennik, Atzmon Vakahi, Uri Banin

Research output: Contribution to journalArticlepeer-review

Abstract

A unique on-chip method for the direct correlation of optical properties, with atomic-scale chemical-structural characteristics for a single quantum dot (QD), is developed and utilized in various examples. This is based on performing single QD optical characterization on a modified glass substrate, followed by the extraction of the relevant region of interest by focused-ion-beam-scanning electron microscope processing into a lamella for high resolution scanning transmission electron microscopy (STEM) characterization with atomic scale resolution. The direct correlation of the optical response under an electric field with STEM analysis of the same particle allows addressing several single particle phenomena: first, the direct correlation of single QD photoluminescence (PL) polarization and its response to the external field with the QD crystal lattice alignment, so far inferred indirectly; second, the identification of unique yet rare few-QD assemblies, correlated directly with their special spectroscopic optical characteristics, serving as a guide for future designed assemblies; and third, the study on the effect of metal island growth on the PL behavior of hybrid semiconductor-metal nanoparticles, with relevance for their possible functionality in photocatalysis. This work, therefore, establishes the use of the direct on-chip optical-structural correlation method for numerous scenarios and timely questions in the field of QD research.

Original languageAmerican English
JournalThe Journal of Chemical Physics
Volume160
Issue number13
DOIs
StatePublished - 7 Apr 2024

Bibliographical note

Publisher Copyright:
© 2024 Author(s). Published under an exclusive license by AIP Publishing.

Fingerprint

Dive into the research topics of 'Seeing is believing: Correlating optoelectronic functionality with atomic scale imaging of single semiconductor nanocrystals'. Together they form a unique fingerprint.

Cite this