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Issue 4, 2017

Engineering the surface chemistry of lead chalcogenide nanocrystal solids to enhance carrier mobility and lifetime in optoelectronic devices

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Abstract

We introduce a stepwise, hybrid ligand-exchange method for lead chalcogenide nanocrystal (NC) thin films using the compact-inorganic ligand thiocyanate and the short organic ligand benzenediothiolate. Spectroscopic and device measurements show that hybrid exchange enhances both carrier mobility and lifetime in NC thin films. The increased mobility-lifetime product achieved by this method enables demonstration of optoelectronic devices with enhanced power conversion and quantum efficiency.

Graphical abstract: Engineering the surface chemistry of lead chalcogenide nanocrystal solids to enhance carrier mobility and lifetime in optoelectronic devices

Supplementary files

Article information


Submitted
30 Sep 2016
Accepted
11 Dec 2016
First published
12 Dec 2016

Chem. Commun., 2017,53, 728-731
Article type
Communication

Engineering the surface chemistry of lead chalcogenide nanocrystal solids to enhance carrier mobility and lifetime in optoelectronic devices

S. J. Oh, D. B. Straus, T. Zhao, J.-H. Choi, S.-W. Lee, E. A. Gaulding, C. B. Murray and C. R. Kagan, Chem. Commun., 2017, 53, 728 DOI: 10.1039/C6CC07916D

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