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Journal articles
Direct Synthesis of Highly Conductive tert-Butylthiol-Capped CuInS2 Nanocrystals
Abstract : tert-butylthiol (tBuSH) is used as the sulfur source, surface ligand and co-solvent in the synthesis of CuInS2 nanocrystals (NCs). The presented method gives direct access to short-ligand-capped NCs without post-synthetic ligand exchange. The obtained 5nm CuInS2 NCs crystallize in the cubic sphalerite phase with space group F-43m and a lattice parameter a=5.65 angstrom. Their comparably large optical and electrochemical band gap of 2.6-2.7eV is attributed to iodine incorporation into the crystal structure as reflected by the composition Cu1.04In0.96S1.84I0.62 determined by EDX. Conductivity measurements on thin films of the tBuSH-capped NCs result in a value of 2.5(.)10(-2)Sm(-1), which represents an increase by a factor of 400 compared to established dodecanethiol-capped CuInS2 NCs.
https://hal-cea.archives-ouvertes.fr/cea-01849841
Contributor : Jérôme Planès <>
Submitted on : Thursday, July 26, 2018 - 3:15:20 PM
Last modification on : Monday, July 20, 2020 - 2:20:03 PM
Contributor : Jérôme Planès <>
Submitted on : Thursday, July 26, 2018 - 3:15:20 PM
Last modification on : Monday, July 20, 2020 - 2:20:03 PM
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