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Title: Sulvanite (Cu 3VS 4) nanocrystals for printable thin film photovoltaics

Copper Vanadium Sulfide (Cu 3VS 4), also known as sulvanite, has recently emerged as a suitable absorber material for thin film photovoltaics. The synthesis of Cu 3VS 4 nanocrystals via a rapid solvothermal route is reported for the first time. The phase purity of the Cu 3VS 4 nanocrystals has been confirmed by X-ray powder diffraction (XRD) and Raman spectroscopy, while the nanoparticle size, of about 10 nm, was evaluated by transmission electron microscopy (TEM). Successful ligand exchange with sulfide, an inorganic ligand, demonstrated that the nanoparticles are amenable to surface modifications, key element in solution processing. Further annealing of as-synthesized nanocrystals under a sulfur/argon atmosphere at 600 °C, rendered highly crystalline Cu 3VS 4 powders exhibiting an impurity that could be potentially mitigated by annealing temperature optimization. Furthermore, Cu 3VS 4, formed solely from Earth-abundant elements, could provide an inexpensive, reliable approach to fabricating solution processed thin film photovoltaic absorbers.
 [1] ;  [2] ;  [1] ;  [3] ;  [4]
  1. Delaware State Univ., Dover, DE (United States)
  2. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  3. Univ. of Delaware, Newark, DE (United States)
  4. Delaware State Univ., Dover, DE (United States); Univ. of Delaware, Newark, DE (United States)
Publication Date:
Grant/Contract Number:
AC02-76SF00515; 1435716; 1535876
Accepted Manuscript
Journal Name:
Materials Letters
Additional Journal Information:
Journal Volume: 211; Journal Issue: C; Journal ID: ISSN 0167-577X
Research Org:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org:
Country of Publication:
United States
36 MATERIALS SCIENCE; Nanocrystalline materials; Nanoparticles; Colloidal processing; Thin films; Solar energy materials; Electronic materials
OSTI Identifier: