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Engineering the surface chemistry of lead chalcogenide nanocrystal solids to enhance carrier mobility and lifetime in optoelectronic devices
- Authors
- Oh, S. J.; Straus, D. B.; Zhao, T.; Choi, J. -H.; Lee, S. -W.; Gaulding, E. A.; Murray, C. B.; Kagan, C. R.
- Issue Date
- 14-1월-2017
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- CHEMICAL COMMUNICATIONS, v.53, no.4, pp.728 - 731
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMICAL COMMUNICATIONS
- Volume
- 53
- Number
- 4
- Start Page
- 728
- End Page
- 731
- ISSN
- 1359-7345
- 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.
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