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16 March 2024 Nanostructured nickel oxide as a charge transport layer in organic photovoltaics
Xin Wei, Daniel Williams, Angela Ebere Ezugwu, Victor Wong, Giovanni Fanchini
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Proceedings Volume PC12887, Oxide-based Materials and Devices XV; PC1288702 (2024) https://doi.org/10.1117/12.3012041
Event: SPIE OPTO, 2024, San Francisco, California, United States
Abstract
Transparent conducting oxides (TCOs) are widely investigated in purview of potential applications as charge collectors in light-emitting devices and thin-film photovoltaics where optical transparency in the visible photon energy range are required. TCOs that have been investigated as charge collectors in optoelectronic devices include indium-doped and fluorine-doped tin oxides, zinc oxides, nickel oxide (NiO), and their alloys. The strong interest in NiO stems from the fact that no dopants are needed to turn on its electrical conductivity while keeping its transparency at acceptable levels, differently from tin oxide, where In or F doping is required, and zinc oxide where conductivity is enhanced by Al doping. Our work will present our defect engineering efforts to optimize NiO and (MgNi)O thin films for their applications as TCOs. In the final part of our talk, we will present our recent work where NiOx thin films are used as hole transport layers (HTL) in green organic photovoltaics, with water-soluble poly[2-(3-thienyl)-ethoxy-4-butylsulfonate]-sodium (PTEBS) and fullerenes as active layer, showing improved external quantum efficiency for UV light.
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Xin Wei, Daniel Williams, Angela Ebere Ezugwu, Victor Wong, and Giovanni Fanchini "Nanostructured nickel oxide as a charge transport layer in organic photovoltaics", Proc. SPIE PC12887, Oxide-based Materials and Devices XV, PC1288702 (16 March 2024); https://doi.org/10.1117/12.3012041
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KEYWORDS
Thin films
Organic photovoltaics
Oxides
Nanostructuring
Nickel
Thin film solar cells
Electrical conductivity
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