Journal
NANO LETTERS
Volume 11, Issue 11, Pages 4764-4767Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl202578g
Keywords
Nanocubes; quantum dots; field-effect transistors; inverters; circuits; flexible electronics; lead sulfide; thiocyanate ligands
Categories
Funding
- NSF [DMS-0935165]
- NSF MRSEC [DMR-0520020]
- U.S. Department of Energy Office of Basic Energy Sciences, Division of Materials Science and Engineering [DE-SC0002158]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1120901] Funding Source: National Science Foundation
- Division Of Mathematical Sciences
- Direct For Mathematical & Physical Scien [0935165] Funding Source: National Science Foundation
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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 similar to 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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