Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/142477
Title: Cu-doped nickel oxide interface layer with nanoscale thickness for efficient and highly stable printable carbon-based perovskite solar cell
Authors: Bashir, Amna
Lew, Jia Haur
Shukla, Sudhanshu
Gupta, Disha
Baikie, Tom
Chakraborty, Sudip
Patidar, Rahul
Bruno, Annalisa
Mhaisalkar, Subodh Gautam
Akhter, Zareen
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Bashir, A., Lew, J. H., Shukla, S., Gupta, D., Baikie, T., Chakraborty, S., . . . Akhter, Z. (2019). Cu-doped nickel oxide interface layer with nanoscale thickness for efficient and highly stable printable carbon-based perovskite solar cell. Solar Energy, 182, 225-236. doi:10.1016/j.solener.2019.02.056
Journal: Solar Energy 
Abstract: The power conversion efficiency (PCE) of hole conductor free carbon-based perovskite solar cells (PSCs) is restricted by the poor charge extraction and recombination losses at the carbon-perovskite interface. For the first time we successfully demonstrated incorporation of thin layer of copper doped nickel oxide (Cu:NiOx) nanoparticles in carbon-based PSCs, which helps in improving the performance of these solar devices. Cu:NiOx nanoparticles have been synthesized by a facile chemical method, and processed into a paste for screen printing. Extensive X-ray Absorption Spectroscopy (XAS) analysis elucidates the co-ordination of Cu in a NiOx matrix and indicates the presence of around 5.4% Cu in the sample. We fabricated a monolithic perovskite module on a 100 cm2 glass substrate (active area of 70 cm2) with a thin Cu:NiOx layer (80 nm), where the champion device shows an appreciated power conversion efficiency of 12.1% under an AM 1.5G illumination. To the best of our knowledge, this is the highest reported efficiency for such a large area perovskite solar device. I-V scans show that the introduction of Cu:NiOx mesoporous scaffold increases the photocurrent, and yields fill factor (FF) values exceeding 57% due to the better interface and increased hole extraction efficiency. Electrochemical Impedance Spectroscopy (EIS) results reinforce the above results by showing the reduction in recombination resistance (Rrec) of the PSCs that incorporates Cu:NiOx interlayer. The perovskite solar modules with a Cu:NiOx layer are stable for more than 4500 h in an ambient environment (25 °C and 65% RH), with PCE degradation of less than 5% of the initial value.
URI: https://hdl.handle.net/10356/142477
ISSN: 0038-092X
DOI: 10.1016/j.solener.2019.02.056
Rights: © 2019 International Solar Energy Society. All rights reserved. This paper was published by Elsevier Ltd in Solar Energy and is made available with permission of International Solar Energy Society.
Fulltext Permission: embargo_20210507
Fulltext Availability: With Fulltext
Appears in Collections:ERI@N Journal Articles

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