Ranulfo Allen, John Baglin, et al.
J. Photopolym. Sci. Tech.
Using vacuum process, we fabricated Cu2ZnSnS4 solar cells with 8.4% efficiency, a number independently certified by an external, accredited laboratory. This is the highest efficiency reported for pure sulfide Cu2ZnSnS4 prepared by any method. Consistent with literature, the optimal composition is Cu-poor and Zn-rich despite the precipitation of secondary phases (e.g., ZnS). Despite a very thin absorber thickness (~600 nm), a reasonably good short-circuit current was obtained. Time-resolved photoluminescence measurements suggest a minority carrier-diffusion length on the order of several hundreds of nanometers and relatively good collection of photo-carriers across the entire absorber thickness. Copyright © 2011 John Wiley & Sons, Ltd.
Ranulfo Allen, John Baglin, et al.
J. Photopolym. Sci. Tech.
O.F. Schirmer, K.W. Blazey, et al.
Physical Review B
S. Cohen, J.C. Liu, et al.
MRS Spring Meeting 1999
Surendra B. Anantharaman, Joachim Kohlbrecher, et al.
MRS Fall Meeting 2020