AI Article Synopsis
- * Research shows that during the synthesis of NCs in a certain environment, a phenomenon called nanofaceting occurs, leading to unique shapes and curved interfaces.
- * Adjusting the stoichiometry of PbS NCs can alter their wettability and interface properties, enhancing applications like multiple junction deposition and interparticle growth, ultimately improving band structure control compared to bulk materials.
Article Abstract
Colloidal nanocrystals (NCs) have shown remarkable promise for optoelectronics, energy harvesting, photonics, and biomedical imaging. In addition to optimizing quantum confinement, the current challenge is to obtain a better understanding of the critical processing steps and their influence on the evolution of structural motifs. Computational simulations and electron microscopy presented in this work show that nanofaceting can occur during nanocrystal synthesis from a Pb-poor environment in a polar solvent. This could explain the curved interfaces and the olivelike-shaped NCs observed experimentally when these conditions are employed. Furthermore, the wettability of the PbS NCs solid film can be further modified via stoichiometry control, which impacts the interface band bending and, therefore, processes such as multiple junction deposition and interparticle epitaxial growth. Our results suggest that nanofaceting in NCs can become an inherent advantage when used to modulate band structures beyond what is traditionally possible in bulk crystals.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10037336 | PMC |
| http://dx.doi.org/10.1021/acs.nanolett.2c04851 | DOI Listing |
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