Please use this identifier to cite or link to this item: https://ktisis.cut.ac.cy/handle/10488/18543
Title: Nanoparticulate metal oxide top electrode interface modification improves the thermal stability of inverted perovskite photovoltaics
Authors: Papadas, Ioannis T. 
Galatopoulos, Fedros 
Armatas, Gerasimos S. 
Tessler, Nir 
Choulis, Stelios A. 
Major Field of Science: Engineering and Technology
Field Category: Materials Engineering
Keywords: Nanoparticulate metal oxides;Interfaces;Charge traps density;Electrodes;Impedance spectroscopy;Degradation mechanisms;Accelerated lifetime;Thermal stability;Inverted perovskites solar cells
Issue Date: 14-Nov-2019
Source: Nanomaterials, 2019, vol. 9, no. 11, articl. no. 1616
Volume: 9
Issue: 11
Journal: Nanomaterials 
Abstract: Solution processed γ-Fe2O3 nanoparticles via the solvothermal colloidal synthesis in conjunction with ligand-exchange method are used for interface modification of the top electrode in inverted perovskite solar cells. In comparison to more conventional top electrodes such as PC(70)BM/Al and PC(70)BM/AZO/Al, we show that incorporation of a γ-Fe2O3 provides an alternative solution processed top electrode (PC(70)BM/γ-Fe2O3/Al) that not only results in comparable power conversion efficiencies but also improved thermal stability of inverted perovskite photovoltaics. The origin of improved stability of inverted perovskite solar cells incorporating PC(70)BM/ γ-Fe2O3/Al under accelerated heat lifetime conditions is attributed to the acidic surface nature of γ-Fe2O3 and reduced charge trapped density within PC(70)BM/ γ-Fe2O3/Al top electrode interfaces.
URI: https://ktisis.cut.ac.cy/handle/10488/18543
ISSN: 2079-4991
DOI: 10.3390/nano9111616
Rights: © by the authors.
Attribution-NonCommercial-NoDerivs 3.0 United States
Type: Article
Affiliation : Cyprus University of Technology 
University of Crete 
Technion-Israel Institute of Technology 
Appears in Collections:Άρθρα/Articles

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