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Paramagnetic point defects and charge carriers in PbS and CdS nanocrystal polymer composites

Keeble, D J; Thomsen, Elizabeth; Stavrinadis, Alexandros; Samuel, I D W; Smith, Jason M; Watt, Andrew A.R.

Description

Using electron paramagnetic resonance we identify point defects in CdS nanocrystals. A spectrum consistent with Cd vacancies in distorted sites is observed, and evidence for S vacancies is presented. Light-induced paramagnetic states attributed to defects are also detected in PbS nanocrystals. Nanocrystal shallow donor electron states are observed in CdS composites with the conjugated polymer poly[2-methoxy-5-(2-ethylhexyloxy)-p-phenylene vinylene] (MEH-PPV), and show an increased g-value...[Show more]

CollectionsANU Research Publications
Date published: 2009
Type: Journal article
URI: http://hdl.handle.net/1885/80190
Source: Journal of Physical Chemistry C
DOI: 10.1021/jp9044429

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