Morphology-optimized ZnSnO3 nanopentagons as efficient electron transport layers for high-efficient perovskite solar cells

IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Sahaya Dennish Babu George , Karthikeyan Nagarajan , Ayeshamariam Abbas Ali , Swetha Madamala , Dhinesh Subramanian , Sarojini Kuppamuthu , Judith Jayarani Arockiasamy
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Abstract

Ternary metal oxides with high optical transparency and wide bandgap semiconductors have gained significant attention as promising candidates for various optoelectronic device applications. In this study, ZnSnO3 nanomaterials, synthesized in distinct nanopentagon and spherical nanoparticle morphologies, were prepared using hydrothermal and microwave-assisted synthesis methods. Structural analysis through X-ray diffraction (XRD) confirmed the perovskite phase of ZnSnO3. Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM) revealed distinct morphological variations, while Energy Dispersive Spectroscopy (EDS) mapping validated the stoichiometric composition. X-ray Photoelectron Spectroscopy (XPS) further confirmed the oxidation states of Zn2+, Sn4+, and O2−. Optical studies from Ultraviolet–visible spectroscopy (UV–Vis) revealed bandgap values of 3.64 eV and 3.66 eV for ZnSnO3 synthesized via hydrothermal and microwave methods, respectively. To evaluate their performance in optoelectronic applications, ZnSnO3-based electron transport layers (ETLs) were incorporated into an FTO/ZnSnO3/CH3NH3PbI3/Spiro-MeOTAD/Au perovskite solar cell architecture. Notably, hydrothermally synthesized ZnSnO3 nanopentagon ETLs achieved a power conversion efficiency (PCE) of 17.73 %, outperforming the 14.28 % PCE obtained with microwave-synthesized spherical nanoparticles. This study underscores the potential of ZnSnO3-based ETLs for highly efficient perovskite solar cells (PSCs), emphasizing the impact of synthesis methods on device performance. By demonstrating the viability of ZnSnO3 nanomaterials in advanced optoelectronic applications, this work lays the groundwork for further optimization and development of high-performance devices leveraging ternary metal oxides.

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来源期刊
Journal of Solid State Chemistry
Journal of Solid State Chemistry 化学-无机化学与核化学
CiteScore
6.00
自引率
9.10%
发文量
848
审稿时长
25 days
期刊介绍: Covering major developments in the field of solid state chemistry and related areas such as ceramics and amorphous materials, the Journal of Solid State Chemistry features studies of chemical, structural, thermodynamic, electronic, magnetic, and optical properties and processes in solids.
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