Journal Article

FZJ-2015-07463

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png An electron beam evaporated TiO $_{2}$ layer for high efficiency planar perovskite solar cells on flexible polyethylene terephthalate substrates

Qiu, W. (Corresponding author) ; Paetzold, U. W.FZJ* ; Gehlhaar, R. ; Smirnov, V.FZJ* ; Boyen, H.-G. ; Tait, J. G. ; Conings, B. ; Zhang, W. ; Nielsen, C. B. ; McCulloch, I. ; Froyen, L. ; Heremans, P. (Corresponding author) ; Cheyns, D.

2015
RSC London {[u.a.]

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Please use a persistent id in citations: doi:10.1039/C5TA07515G

Abstract: The TiO2 layer made by electron beam (e-beam) induced evaporation is demonstrated as an electron transport layer (ETL) in high efficiency planar junction perovskite solar cells. The temperature of the substrate and the thickness of the TiO2 layer can be easily controlled with this e-beam induced evaporation method, which enables the usage of different types of substrates. Here, perovskite solar cells based on CH3NH3PbI3−xClx achieve power conversion efficiencies of 14.6% on glass and 13.5% on flexible plastic substrates. The relationship between the TiO2 layer thickness and the perovskite morphology is studied by scanning electron microscopy (SEM), atomic force microscopy (AFM), and X-ray photoelectron spectroscopy (XPS). Our results indicate that the pinholes in the thin TiO2 layer lead to pinholes in the perovskite layer. By optimizing the TiO2 thickness, perovskite layers with substantially increased surface coverage and reduced pinhole areas are fabricated, increasing overall device performance.

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Contributing Institute(s):

1. Photovoltaik (IEK-5)

Research Program(s):

1. 121 - Solar cells of the next generation (POF3-121) (POF3-121)

Appears in the scientific report 2015

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Database coverage:
; Allianz-Lizenz / DFG ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; IF >= 5 ; JCR ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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