Journal
ANNUAL REVIEW OF PHYSICAL CHEMISTRY, VOL 71
Volume 71, Issue -, Pages 1-30Publisher
ANNUAL REVIEWS
DOI: 10.1146/annurev-physchem-052516-050703
Keywords
heterogeneous energy materials; nonequilibrium dynamics; optical spectroscopy; spatiotemporal; diffusion; ultrafast microscopy
Categories
Funding
- US Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0019140, DE-SC0001088, DE-SC0019345]
- Science and Technology Center on Real-Time Functional Imaging
- National Science Foundation Science and Technology Center [DMR 1548924]
- Dow Chemical Company [244699]
- Photonics at Thermodynamic Limits' Energy Frontier Research Center - US Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0019140]
- David and Lucile Packard Fellowship for Science and Engineering
- Alfred P. Sloan Research Fellowship
- Camille Dreyfus Teacher-Scholar Award
Ask authors/readers for more resources
We review recent advances in the characterization of electronic forms of energy transport in emerging semiconductors. The approaches described all temporally and spatially resolve the evolution of initially localized populations of photogenerated excitons or charge carriers. We first provide a comprehensive background for describing the physical origin and nature of electronic energy transport both microscopically and from the perspective of the observer. We introduce the new family of far-field, time-resolved optical microscopies developed to directly resolve not only the extent of this transport but also its potentially temporally and spatially dependent rate. We review a representation of examples from the recent literature, including investigation of energy flow in colloidal quantum dot solids, organic semiconductors, organic-inorganic metal halide perovskites, and 2D transition metal dichalcogenides. These examples illustrate how traditional parameters like diffusivity are applicable only within limited spatiotemporal ranges and how the techniques at the core of this review, especially when taken together, are revealing a more complete picture of the spatiotemporal evolution of energy transport in complex semiconductors, even as a function of their structural heterogeneities.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available