Hybrid Mesoporous TiO<sub>2</sub>/ZnO Electron Transport Layer for Efficient Perovskite Solar Cell
Aleksandra Drygała,
Zbigniew Starowicz,
Katarzyna Gawlińska-Nęcek,
Małgorzata Karolus,
Marek Lipiński,
Paweł Jarka,
Wiktor Matysiak,
Eva Tillová,
Peter Palček,
Tomasz Tański
Affiliations
Aleksandra Drygała
Department of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a Street, 44-100 Gliwice, Poland
Zbigniew Starowicz
Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25 Street, 30-059 Cracow, Poland
Katarzyna Gawlińska-Nęcek
Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25 Street, 30-059 Cracow, Poland
Małgorzata Karolus
Institute of Materials Engineering, University of Silesia, 1a 75 Pułku Piechoty Street, 41-500 Chorzow, Poland
Marek Lipiński
Institute of Metallurgy and Materials Science, Polish Academy of Sciences, Reymonta 25 Street, 30-059 Cracow, Poland
Paweł Jarka
Department of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a Street, 44-100 Gliwice, Poland
Wiktor Matysiak
Scientific and Didactic Laboratory of Nanotechnology and Material Technologies, Faculty of Mechanical Engineering, Silesian University of Technology, Towarowa 7 Street, 44-100 Gliwice, Poland
Eva Tillová
Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1 Street, 010 26 Zilina, Slovakia
Peter Palček
Department of Materials Engineering, Faculty of Mechanical Engineering, University of Žilina, Univerzitná 1 Street, 010 26 Zilina, Slovakia
Tomasz Tański
Department of Engineering Materials and Biomaterials, Silesian University of Technology, Konarskiego 18a Street, 44-100 Gliwice, Poland
In recent years, perovskite solar cells (PSCs) have gained major attention as potentially useful photovoltaic technology due to their ever-increasing power-conversion efficiency (PCE). The efficiency of PSCs depends strongly on the type of materials selected as the electron transport layer (ETL). TiO2 is the most widely used electron transport material for the n-i-p structure of PSCs. Nevertheless, ZnO is a promising candidate owing to its high transparency, suitable energy band structure, and high electron mobility. In this investigation, hybrid mesoporous TiO2/ZnO ETL was fabricated for a perovskite solar cell composed of FTO-coated glass/compact TiO2/mesoporous ETL/FAPbI3/2D perovskite/Spiro-OMeTAD/Au. The influence of ZnO nanostructures with different percentage weight contents on the photovoltaic performance was investigated. It was found that the addition of ZnO had no significant effect on the surface topography, structure, and optical properties of the hybrid mesoporous electron-transport layer but strongly affected the electrical properties of PSCs. The best efficiency rate of 18.24% has been obtained for PSCs with 2 wt.% ZnO.
