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Thiocyanate-capped PbS nanocubes: ambipolar transport enables quantum dot based circuits on a flexible substrate
Journal article   Peer reviewed

Thiocyanate-capped PbS nanocubes: ambipolar transport enables quantum dot based circuits on a flexible substrate

Weon-Kyu Koh, Sangameshwar R Saudari, Aaron T Fafarman, Cherie R Kagan and Christopher B Murray
Nano letters, v 11(11), pp 4764-4767
09 Nov 2011
PMID: 22011060

Abstract

Crystallization - methods Electron Transport Lead - chemistry Macromolecular Substances - chemistry Materials Testing Molecular Conformation Nanostructures - chemistry Nanostructures - ultrastructure Particle Size Quantum Dots Selenium Compounds - chemistry Surface Properties Thiocyanates - chemistry
We report the use of thiocyanate as a ligand for lead sulfide (PbS) nanocubes for high-performance, thin-film electronics. PbS nanocubes, self-assembled into thin films and capped with the thiocyanate, exhibit ambipolar characteristics in field-effect transistors. The nearly balanced, high mobilities for electrons and holes enable the fabrication of CMOS-like inverters with promising gains of ∼22 from a single semiconductor material. The mild chemical treatment and low-temperature processing conditions are compatible with plastic substrates, allowing the realization of flexible, nonsintered quantum dot circuits.

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Web of Science research areas
Chemistry, Multidisciplinary
Chemistry, Physical
Materials Science, Multidisciplinary
Nanoscience & Nanotechnology
Physics, Applied
Physics, Condensed Matter
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