Engineering charge injection and charge transport for high performance PbSe nanocrystal thin film devices and circuits

Soong Ju Oh, Zhuqing Wang, Nathaniel E. Berry, Ji Hyuk Choi, Tianshuo Zhao, E. Ashley Gaulding, Taejong Paik, Yuming Lai, Christopher B. Murray, Cherie R. Kagan

Research output: Contribution to journalArticlepeer-review

76 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)6210-6216
Number of pages7
JournalNano Letters
Volume14
Issue number11
DOIs
Publication statusPublished - 2014 Nov 12

Keywords

  • PbSe
  • bandlike transport
  • charge injection
  • charge transport
  • circuit
  • field-effect transistor

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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