Synthesis and optoelectronic properties of Cu3VSe4 nanocrystals.

PloS one (2020-05-06)
Mimi Liu, Cheng-Yu Lai, Gurpreet Singh Selopal, Daniela R Radu
ABSTRACT

The ternary chalcogenide Cu3VSe4 (CVSe) with sulvanite structure has been theoretically predicted to be a promising candidate for photovoltaic applications due to its suitable bandgap for solar absorption and the relatively earth-abundant elements in its composition. To realize the absorber layer via an inexpensive route, printed thin-films could be fabricated from dispersions of nano-sized Cu3VSe4 precursors. Herein, cubic Cu3VSe4 nanocrystals were successfully synthesized via a hot-injection method. Similar with reported Cu3VS4 nanocrystals, Cu3VSe4 nanocrystals with cubic structure exhibit three absorption bands in the UV-Visible range indicative of a potential intermediate bandgap existence. A thin film fabricated by depositing the nanoparticles Cu3VSe4 on FTO coated glass substrate, exhibited a p-type behavior and a photocurrent of ~ 4 μA/cm2 when measured in an electrochemical cell setting. This first demonstration of photocurrent exhibited by a CVSe nanocrystals thin film signifies a promising potential in photovoltaic applications.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Trioctylphosphine, 97%
Sigma-Aldrich
Copper(I) chloride, AnhydroBeads, ≥99.99% trace metals basis