Among the causes of degradation performance kesterite-based solar cells is wrong choice n-type buffer layer which has direct repercussions on unfavorable band alignment, conduction offset (CBO) at interface absorber/buffer junction one major lower VOC. In this work, effect CBO (CZTS/Cd(1-x)ZnxS) as a function x composition Zn with respect to (Zn+Cd) studied using SCAPS-1D simulator package. The...

In this work, the effects of Si-doping in Cu2ZnSnS4 are examined computationally and experimentally. The density functional theory calculations show that an increasing concentration Si (from x = 0 to 1) yields a band gap rise due shifting conduction minimum towards higher energy states Cu2Zn(Sn1−xSix)S4. CZTSiS thin film prepared by co-sputtering process shows Cu2Zn(Sn1−xSix)S4 (Si-rich) (S-ric...

The aqueous based reflux method useful for the green synthesis of nanostructures is described in detail. In this method, the parameters: the order of addition of precursors, the time of the reflux and the cooling rate should be optimized in order to obtain the desired phase and morphology of the nanostructures. The application of this method is discussed with reference to the synthesis of CZTS ...