Investigation of Structural, Morphological, and Optical Properties of Novel Electrospun Mg-Doped TiO2 Nanofibers as an Electron Transport Material for Perovskite Solar Cells

Perovskite solar cells (PSCs) are quickly becoming efficient solar cells due to the effective physicochemical properties of the absorber layer. This layer should ideally be placed between a stable hole transport material (HTM) layer and a conductive electron transport material (ETM) layer. These out...

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Bibliographic Details
Published in:Nanomaterials (Basel, Switzerland) Switzerland), 2023-08, Vol.13 (15), p.2255
Main Authors: Erdogar, Kubra, Yucel, Ozgun, Oruc, Muhammed Enes
Format: Article
Language:English
Subjects:
Conduction bands
Crystal structure
Current density
Doping
Efficiency
Electrodes
Electron transport
electron transport material
Electrospinning
Energy
Energy bands
Energy gap
Ethanol
Holes (electron deficiencies)
Investigations
Magnesium
Mg-doped TiO2
Nanofibers
Nanoparticles
Open circuit voltage
Optical properties
perovskite
Perovskites
Photovoltaic cells
Physicochemical properties
Recombination
Solar cells
Titanium
Titanium dioxide
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Summary:Perovskite solar cells (PSCs) are quickly becoming efficient solar cells due to the effective physicochemical properties of the absorber layer. This layer should ideally be placed between a stable hole transport material (HTM) layer and a conductive electron transport material (ETM) layer. These outer layers play a critical role in the current densities and cell voltages of solar cells. In this work, we successfully fabricated Mg-doped TiO2 nanofibers as ETM layers via electrospinning. This study systematically investigates the morphological and optical features of Mg-doped nanofibers as mesoporous ETM layers. The existence of the Mg element in the lattice was confirmed by XRD and XPS. These optical characterizations indicated that Mg doping widened the energy band gap and shifted the edge of the conduction band minimum upward, which enhanced the open circuit voltage (Voc) and short current density (Jsc). The electron-hole recombination rate was lowered, and separation efficiency increased with Mg doping. The results have demonstrated the possibility of improving the efficiency of PSCs with the use of Mg-doped nanofibers as an ETM layer.
ISSN:2079-4991
2079-4991
DOI:10.3390/nano13152255