Please use this identifier to cite or link to this item: https://dspace.iiti.ac.in/handle/123456789/7525
Title: Oxidized Nickel films as highly transparent HTLs for inverted planar perovskite solar cells
Authors: Manjunath, Vishesh
Bimli, Santosh
Parmar, Kaushal H.
Shirage, Parasharam Maruti
Devan, Rupesh S.
Keywords: Energy dispersive X ray analysis;Lead compounds;Morphology;Nickel oxide;Nitrogen compounds;Optoelectronic devices;Perovskite;Perovskite solar cells;Thermal evaporation;Thin films;X ray diffraction analysis;Evaporation conditions;Hole transporting layers;Island-like structures;Islands morphology;Modified two-step method;Nickel oxides (NiO);Power conversion efficiencies;Visible spectroscopy;Iodine compounds;energy efficiency;evaporation;film;fuel cell;geomorphology;nickel;oxidation;oxide group;perovskite;transformation;transparency
Issue Date: 2019
Publisher: Elsevier Ltd
Citation: Manjunath, V., Bimli, S., Parmar, K. H., Shirage, P. M., & Devan, R. S. (2019). Oxidized nickel films as highly transparent HTLs for inverted planar perovskite solar cells. Solar Energy, 193, 387-394. doi:10.1016/j.solener.2019.09.070
Abstract: Inverted planar perovskite solar cells (PSCs) with nickel oxide (NiO) as a hole transporting layer were fabricated in an ambient atmosphere. Nickel (Ni) film synthesized at optimized evaporation conditions using low-cost thermal evaporation were transformed from island-like structure to compact porous thin films of NiO after oxidation at 580 ℃. The formation of highly transparent NiO films without any impurity was confirmed from UV–visible spectroscopy and energy dispersive x-ray analysis. These optically tailored NiO films with island-like morphology conceived minimum absorption to the visible light than that of compact porous thin films. The NiO island-like films coated with single cationic CH3NH3PbI3 perovskite overlayer in ambient conditions via a modified two-step method showed higher hole quenching than the compact porous NiO thin films. PSCs consisting of NiO island-like films showed 39.3% improvement in power conversion efficiency (PCE), and 41.4% enhancement in current density (JSC) compared to the compact porous NiO thin films. Overall, the present approach of utilizing optically engineered island-like inorganic films with single cationic CH3NH3PbI3 perovskite overlayer has opened up a novel approach toward the improvement in high-performance optoelectronic devices fabricated at an ambient atmosphere. © 2019 International Solar Energy Society
URI: https://doi.org/10.1016/j.solener.2019.09.070
https://dspace.iiti.ac.in/handle/123456789/7525
ISSN: 0038-092X
Type of Material: Journal Article
Appears in Collections:Department of Metallurgical Engineering and Materials Sciences

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