Highly uniform single crystal ultrathin CsPbBr3nanowires with diameter of 2.2 nm and length up to several microns were successfully synthesized and purified using a catalyst-free colloidal method.
Significance and Impact
These bright ultrathin nanowires can serve as a model system to study strong quantum confinement effects in a one-dimensional halide perovskite system.
- Developed a stepwise purification method to improve the purity of the ultrahin nanowires to over 90%, by using different volumes of ethyl acetate as antisolvent
- Ultrathin CsPbBr3 nanowires show uniform diameter, bright photoluminescence, and strong quantum confinement effect
- Strong photoluminescence can be tuned from 360 – 580 nm while preserving morphology.