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Dynamic Impurity Redistributions in Kesterite Absorbers
Author(s) -
Grini Sigbjørn,
Aboulfadl Hisham,
Ross Nils,
Persson Clas,
Platzer-Björkman Charlotte,
Thuvander Mattias,
Vines Lasse
Publication year - 2020
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202070025
Subject(s) - kesterite , impurity , materials science , annealing (glass) , planar , atom probe , redistribution (election) , crystallography , molecular physics , analytical chemistry (journal) , chemical physics , solar cell , nanotechnology , chemistry , optoelectronics , metallurgy , czts , computer graphics (images) , organic chemistry , chromatography , transmission electron microscopy , politics , computer science , political science , law
Air annealing and heavy‐water treatment of kesterite solar‐cell absorbers lead to a redistribution of impurities affecting the power conversion efficiency. Sigbjørn Grini and co‐workers (see article number 2000062 ) have performed atom probe tomography analysis of Cu 2 ZnSnS 4 absorbers, revealing the elemental distribution at nanometer scale in three dimensions. On the cover, Cu and Na atoms are shown (Cu atoms are displayed only within one half of the reconstruction to better visualize the dispersion of Na atoms). A two‐dimensional concentration map positioned in the middle of the reconstruction shows the Cu inhomogeneity within the grain interior. Na‐decorated dislocations are marked by “1D” and Na‐rich clusters by “C”. A planar defect, located top left, exhibits Na segregations at the defect and Cu enrichment nearby.