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Detrimental Impact of Na Upon Rb Postdeposition Treatments of Cu(In,Ga)Se 2 Absorber Layers
Author(s) -
de Wild Jessica,
Birant Gizem,
Thiruvallur Eachambadi Raghavendran,
Kohl Thierry,
Buldu Dilara G.,
Brammertz Guy,
Manca Jean V.,
Meuris Marc,
Poortmans Jef,
Vermang Bart
Publication year - 2021
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.202170094
Subject(s) - materials science , acceptor , redistribution (election) , layer (electronics) , alkali metal , solar cell , diffusion , annealing (glass) , optoelectronics , chemical engineering , analytical chemistry (journal) , composite material , chemistry , condensed matter physics , environmental chemistry , physics , organic chemistry , politics , political science , law , engineering , thermodynamics
Postdeposition Treatment In article number 2100390 , Jessica de Wild and co‐workers performed a RbF postdeposition treatment on AlO x back‐passivated Cu(In,Ga)Se 2 solar cells. It is found that Na present at the AlO x /Mo back contact inhibits Rb diffusion into the absorber layer. A detrimental redistribution of the alkali follows, leading to an injection barrier at the front and reduction of the acceptor concentration in the bulk.