GaInP 2 overgrowth and passivation of colloidal InP nanocrystals using metalorganic chemical vapor deposition
- 2 February 2004
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 84 (5), 780-782
- https://doi.org/10.1063/1.1644620
Abstract
We have used metalorganic chemical vapor deposition to deposit thin passivating films on both isolated and close-packed arrays of colloidal core-shell nanocrystals. Conformal layers of 10–20 nm were grown on the nanocrystals after organic capping molecule removal by a thermal annealing treatment. We show that the InP nanocrystals retain their crystallinity, shape and luminescence efficiency after being exposed to growth temperatures of 600 °C. The nanocrystal composite showed strong photoluminescences indicating effective passivation of surface states. In close-packed nanocrystal arrays, the emission band is redshifted compared to films of isolated nanocrystals indicating electron coupling between dots embedded in
Keywords
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