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Proceedings Paper

Oxide hole blocking selective contacts in perovskite solar cells
Author(s): M. Ulfa; P. Wang; Z. Shao; B. Viana; Th. Pauporté
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Paper Abstract

N-type wide bandgap oxide semiconductors are important components of perovskite solar cells (PSCs)). The present paper illustrates the various important key roles of oxides in PSCs. Since the perovskite layer is prepared on the oxide(s) sublayer(s) it has a great influence the absorber properties. For high efficiency, the oxide hole blocking layer must be well-crystallized, thin and well-covering. We show that the best technique to achieve such characteristics and get high efficiency PSSC is the spray pyrolysis. Moreover, the use of a mesoporous oxide layer improves the cell efficiency but using too thick mesoporous layers is detrimental for the cell performances. TiO2 is the most popular oxide used for selective contact but SnO2 is also an alternative candidate providing good efficiencies. The oxide used must be adjusted to the absorber material properties. This is shown in the case of a silver iodobismuthate absorber (Ag2Bi3I11) which works much better when combined with a SnO2 selective contact compared to a TiO2 selective contact.

Paper Details

Date Published: 23 February 2018
PDF: 10 pages
Proc. SPIE 10533, Oxide-based Materials and Devices IX, 105332R (23 February 2018); doi: 10.1117/12.2294941
Show Author Affiliations
M. Ulfa, Institut de Recherche Chimie-Paris, CNRS, PSL Research Univ. (France)
P. Wang, Institut de Recherche Chimie-Paris, CNRS, PSL Research Univ. (France)
Z. Shao, Institut de Recherche Chimie-Paris, CNRS, PSL Research Univ. (France)
B. Viana, Institut de Recherche Chimie-Paris, CNRS, PSL Research Univ. (France)
Th. Pauporté, Institut de Recherche Chimie-Paris, CNRS, PSL Research Univ. (France)


Published in SPIE Proceedings Vol. 10533:
Oxide-based Materials and Devices IX
David J. Rogers; David C. Look; Ferechteh H. Teherani, Editor(s)

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