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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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