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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2017 ; 8
(ä): 13938
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Suppressed decomposition of organometal halide perovskites by impermeable
electron-extraction layers in inverted solar cells
#MMPMID28067308
Brinkmann KO
; Zhao J
; Pourdavoud N
; Becker T
; Hu T
; Olthof S
; Meerholz K
; Hoffmann L
; Gahlmann T
; Heiderhoff R
; Oszajca MF
; Luechinger NA
; Rogalla D
; Chen Y
; Cheng B
; Riedl T
Nat Commun
2017[Jan]; 8
(ä): 13938
PMID28067308
show ga
The area of thin-film photovoltaics has been overwhelmed by organometal halide
perovskites. Unfortunately, serious stability concerns arise with perovskite
solar cells. For example, methyl-ammonium lead iodide is known to decompose in
the presence of water and, more severely, even under inert conditions at elevated
temperatures. Here, we demonstrate inverted perovskite solar cells, in which the
decomposition of the perovskite is significantly mitigated even at elevated
temperatures. Specifically, we introduce a bilayered electron-extraction
interlayer consisting of aluminium-doped zinc oxide and tin oxide. We evidence
tin oxide grown by atomic layer deposition does form an outstandingly dense gas
permeation barrier that effectively hinders the ingress of moisture towards the
perovskite and-more importantly-it prevents the egress of decomposition products
of the perovskite. Thereby, the overall decomposition of the perovskite is
significantly suppressed, leading to an outstanding device stability.