A. Nagarajan, S. Mukherjee, et al.
Journal of Applied Mechanics, Transactions ASME
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.
A. Nagarajan, S. Mukherjee, et al.
Journal of Applied Mechanics, Transactions ASME
S.C. Lai, S. Kim, et al.
VLSI Technology 2013
S. Cohen, T.O. Sedgwick, et al.
MRS Proceedings 1983
Sang-Min Park, Mark P. Stoykovich, et al.
Advanced Materials