AI Article Synopsis
- One-dimensional colloidal lead halide perovskites (LHPs) are promising as quantum emitters, but their unstable nature has made studying their physical properties challenging.
- Researchers have successfully synthesized stable 1D CsPbBr nanorods and examined their structure and photoluminescence using advanced microscopy techniques.
- The analysis revealed the presence of structural defects in the nanorods and found low quantum yield ratios, indicating challenges in their emission properties.
Article Abstract
One-dimensional (1D) colloidal lead halide perovskites (LHPs) have potential as quantum emitters. Their study, however, has been hampered by their previous instability, leaving a gap in our understanding of structure-property relationships in colloidal LHPs with anisotropic shapes. Here, we synthesize stable, highly-confined 1D CsPbBr nanorods (NRs) and demonstrate their structural details and photoluminescence (PL) properties at both the ensemble and single particle levels. Using amino-terminated copolymers, we are able to stabilize and characterize 1D CsPbBr NRs utilizing transmission electron microscopy (TEM) and small angle scattering (SAS). Scanning transmission electron microscopy reveals that these NRs possess structural defects, including twists and inhomogeneity. Solution-phase photon correlation spectroscopy shows low biexciton-to-exciton quantum yield ratios (QY/QY) and broad spectral line widths dominated by homogeneous broadening.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.2c03458 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!