title: Organic-capped ZnO nanocrystals: synthesis and n-type character.
abstract: Wurtzite ZnO nanocrystals capped with trioctylphosphine oxide or alkylamines are synthesized and characterized. These ZnO nanocrystals can be made n-type either by electron transfer doping from reducing species in solution or by above band gap photoexcitation with a UV lamp. The n-type nanocrystals exhibit a strong intraband infrared absorption, an extensive bleach of the interband band-edge absorption, and a complete quenching of the photoluminescence.
authors.affiliation: The James Franck Institute, University of Chicago, Chicago, Illinois 60637, USA.
authors.forename: M
authors.initials: M
authors.lastname: Shim
authors.forename: P
authors.initials: P
authors.lastname: Guyot-Sionnest