Engineering charge injection and charge transport for high performance PbSe nanocrystal thin film devices and circuits.
basic_science · Level V
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- Record sourced from PubMed, PMID 25298154.
- Also identified by DOI 10.1021/nl502491d.
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Abstract
We study charge injection and transport in PbSe nanocrystal thin films. By engineering the contact metallurgy and nanocrystal ligand exchange chemistry and surface passivation, we demonstrate partial Fermi-level pinning at the metal-nanocrystal interface and an insulator-to-metal transition with increased coupling and doping, allowing us to design high conductivity and mobility PbSe nanocrystal films. We construct complementary nanocrystal circuits from n-type and p-type transistors realized from a single nanocrystal material by selecting the contact metallurgy.