Optimizing the Interface between Hole Transporting Material and Nanocomposite for Highly Efficient Perovskite Solar Cells

The performances of organometallic halide perovskite-based solar cells severely depend on the device architecture and the interface between each layer included in the device stack. In particular, the interface between the charge transporting layer and the perovskite film is crucial, since it represe...

Full description

Saved in:
Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2019-11, Vol.9 (11), p.1627
Main Authors: Safari, Zeinab, Zarandi, Mahmood Borhani, Giuri, Antonella, Bisconti, Francesco, Carallo, Sonia, Listorti, Andrea, Esposito Corcione, Carola, Nateghi, Mohamad Reza, Rizzo, Aurora, Colella, Silvia
Format: Article
Language:English
Subjects:
Computer architecture
Contact angle
Efficiency
Energy conversion efficiency
Interfaces
Molecular weight
Morphology
Nanocomposites
organometallic halide perovskite
Perovskites
Photovoltaic cells
Photovoltaics
Plasma
polymeric hole transporters
Polymers
Recombination
Scanning electron microscopy
Solar cells
Solvents
starch composite
Substrates
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The performances of organometallic halide perovskite-based solar cells severely depend on the device architecture and the interface between each layer included in the device stack. In particular, the interface between the charge transporting layer and the perovskite film is crucial, since it represents both the substrate where the perovskite polycrystalline film grows, thus directly influencing the active layer morphology, and an important site for electrical charge extraction and/or recombination. Here, we focus on engineering the interface between a perovskite-polymer nanocomposite, recently developed by our group, and different commonly employed polymeric hole transporters, namely PEDOT: PSS [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)], PEDOT, PTAA [poly(bis 4-phenyl}{2,4,6-trimethylphenyl}amine)], Poly-TPD [Poly( , '-bis(4-butylphenyl)- , '-bis(phenyl)-benzidine] Poly-TPD, in inverted planar perovskite solar cell architecture. The results show that when Poly-TPD is used as the hole transfer material, perovskite film morphology improved, suggesting an improvement in the interface between Poly-TPD and perovskite active layer. We additionally investigate the effect of the Molecular Weight (MW) of Poly-TPD on the performance of perovskite solar cells. By increasing the MW, the photovoltaic performances of the cells are enhanced, reaching power conversion efficiency as high as 16.3%.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano9111627