Spontaneous Superlattice Formation in Nanorods Through Partial Cation Exchange
Lawrence Berkeley National Laboratory · University of California, Berkeley
Abstract
Lattice-mismatch strains are widely known to control nanoscale pattern formation in heteroepitaxy, but such effects have not been exploited in colloidal nanocrystal growth. We demonstrate a colloidal route to synthesizing CdS-Ag(2)S nanorod superlattices through partial cation exchange. Strain induces the spontaneous formation of periodic structures. Ab initio calculations of the interfacial energy and modeling of strain energies show that these forces drive the self-organization of the superlattices. The nanorod superlattices exhibit high stability against ripening and phase mixing. These materials are tunable near-infrared emitters with potential applications as nanometer-scale optoelectronic devices.
Citation impact
- FWCI
- 24.23
- Percentile
- 100%
- References
- 35
Authors
6- RDRichard D. RobinsonCorresponding
Lawrence Berkeley National Laboratory, University of California, Berkeley
- BSBryce Sadtler
Lawrence Berkeley National Laboratory, University of California, Berkeley
- DOD. O. Demchenko
Lawrence Berkeley National Laboratory, University of California, Berkeley
- CKCan K. Erdonmez
Lawrence Berkeley National Laboratory, University of California, Berkeley
- LWLin‐Wang Wang
Lawrence Berkeley National Laboratory, University of California, Berkeley
Topics & keywords
- Superlattice
- Nanorod
- Materials science
- Nanocrystal
- Nanoscopic scale
- Chemical physics
- Nanometre
- Nanotechnology
- Affordable and clean energy