Journal
NATURE NANOTECHNOLOGY
Volume 5, Issue 6, Pages 391-400Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nnano.2010.78
Keywords
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Funding
- King Abdullah University of Science and Technology [KUS-I1-009-21]
- Natural Sciences and Engineering Research Council of Canada (NSERC) [I2I]
- Ontario Centers of Excellence
- Canada Foundation for Innovation and Ontario Innovation Trust
- Canada Research Chairs
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The detection of photons underpins imaging, spectroscopy, fibre-optic communications and time-gated distance measurements. Nanostructured materials are attractive for detection applications because they can be integrated with conventional silicon electronics and flexible, large-area substrates, and can be processed from the solution phase using established techniques such as spin casting, spray coating and layer-by-layer deposition. In addition, their performance has improved rapidly in recent years. Here we review progress in light sensing using nanostructured materials, focusing on solution-processed materials such as colloidal quantum dots and metal nanoparticles. These devices exhibit phenomena such as absorption of ultraviolet light, plasmonic enhancement of absorption, size-based spectral tuning, multiexciton generation, and charge carrier storage in surface and interface traps.
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