Co-optimization of SnS absorber and Zn(O,S) buffer materials for improved solar cells

TitleCo-optimization of SnS absorber and Zn(O,S) buffer materials for improved solar cells
Publication TypeJournal Article
Year of Publication2014
AuthorsPark, HHejin, Heasley, R, Sun, L, Steinmann, V, Jaramillo, R, Hartman, K, Chakraborty, R, Sinsermsuksakul, P, Chua, D, Buonassisi, T, Gordon, RG
JournalProgress in Photovoltaics: Research and Applications
Paginationn/a - n/a
Date Published2014/05/01/
ISBN Number1099-159X
KeywordsAnnealing, Atomic Layer Deposition, Chalcogenides, Chemical Doping, Electronic Transport, Oxides, Oxy-Sulfides, Photovoltage / Photocurrent, Photovoltaics, Scanning Electron Microscopy, Thin Films, Tin Chalcogenides, X-Ray Scattering, ZnO

Thin-film solar cells consisting of earth-abundant and non-toxic materials were made from pulsed chemical vapor deposition (pulsed-CVD) of SnS as the p-type absorber layer and atomic layer deposition (ALD) of Zn(O,S) as the n-type buffer layer. The effects of deposition temperature and annealing conditions of the SnS absorber layer were studied for solar cells with a structure of Mo/SnS/Zn(O,S)/ZnO/ITO. Solar cells were further optimized by varying the stoichiometry of Zn(O,S) and the annealing conditions of SnS. Post-deposition annealing in pure hydrogen sulfide improved crystallinity and increased the carrier mobility by one order of magnitude, and a power conversion efficiency up to 2.9% was achieved. Copyright © 2014 John Wiley & Sons, Ltd.

Short TitleProg. Photovolt: Res. Appl.