Air-stable CuInSe2 nanoparticles formed through partial cation exchange in methanol at room temperature

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Spherical CuInSe2 nanoparticles were synthesized through a partial cation exchange reaction of Cu2-xSe nanoparticles in methanol at room temperature. An additive, tributylphosphine, rapidly reduced copper and selenium ions, and facilitated the dissolution of Cu ions. Poly.vinylpyrrolidone) retained the spherical morphology of the nanoparticles by anchoring on the surface. The fraction of In3+ ions increased as the reaction progressed, which led to a decrease of the optical bandgap from 2.06 eV of Cu2-xSe to 1.03 eV of CuInSe2. The resulting CuInSe2 particles exhibited high air and thermal stability, and can be applied as colloidal inks for thin film fabrication in optoelectronic devices
Publisher
ROYAL SOC CHEMISTRY
Issue Date
2016
Language
English
Article Type
Article
Citation

CRYSTENGCOMM, v.18, no.32, pp.6069 - 6075

ISSN
1466-8033
DOI
10.1039/c6ce00950f
URI
http://hdl.handle.net/10203/213279
Appears in Collection
CH-Journal Papers(저널논문)
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