Facile modulation of single source precursors: the synthesis and characterization of single source precursors for deposition of ternary chalcopyrite materials

摘要

In this paper, the systheses and thermal modulation of ternary single source precursors, based on the [{ER_3}_2Cu(YR')_2In(YR'_2] architecutre in good yields are described (E=P, As, Sb; Y=S, Se, and R=alkyl, aryl). Most importantly, we have successfully prepared the firs liquid CuInS_2 (CIS) single source precursors, (when R=Bu, Y=S, and R'= Et, or Pr). These new compounds were utilized for spray chemical vapor deposition (CVD) of copper indium disulfide, an Absorber layer for the fabrication of thin-film solar cells. Thermogravimetric analyses (TGA) and Differential Scanning Caloriometry (DSC) demonstrate that controlled manipulation of the steric and electronic properties of either the group five donor And/or chalcogenide moiety permits directed adjustment of the thermal stability and physical properties of the precursor. Preliminary studies show that these derivatives produce CuInS_2 thin-films at low temperature. X-Ray diffraction studies, EDS and SEM confirmed the formation of the single-phase CuInS_2 thin-films.