Browsing by Author "Davide Mariotti"
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PublicationArticle MAPI-MoS2 quantum dot composite films as active layers for efficient photovoltaics(Royal Society of Chemistry, 2025) Subha Sadhu; Ankur Uttam Kambley; Talitha R.C. Santos; Abhijit Ganguly; Slavia Deeksha DSouza; Dilli Babu Padmanaban; Pagona Papakonstantinou; Paul Damian Maguire; V. Švrček; Davide MariottiIn this work we have incorporated MoS2 quantum dots having outstanding optoelectronic properties with methyl ammonium lead iodide (MAPI) to form a composite absorber material for photovoltaic applications. The inclusion of MoS2 quantum dots in the perovskite layer improves the absorption and charge transport properties of the active layer, in part due to the quantum dots contributing to defect passivation at the MAPI grain interfaces. The photocurrent density increases when the MoS2 quantum dots are introduced in the device structure, resulting in efficiency improvements of 14% and 28% for devices fabricated in different laboratories. © 2025 RSC.PublicationArticle One-Step Synthesis and Deposition of Metal Oxides: NiO Quantum Dots as a Transport Layer for Perovskite Photovoltaics(John Wiley and Sons Inc, 2024) Dilli babu Padmanaban; Subha Sadhu; Slavia Deeksha Dsouza; Warda Mushtaq; Zachary Holman; Vladimir Svrcek; Davide MariottiOne-step synthesis and deposition of nickel oxide quantum dots using a gas-phase microplasma process is demonstrated and their applicability as a transport layer for solar cell devices is shown. The process uses a solid nickel metal wire as sacrificial electrode, and the concentration of oxygen gas required in the synthesis is investigated. The quantum dots are characterized for physical, chemical, and optical properties and critical process parameters such as the process throughput are also estimated. Direct one-step deposition directly on perovskite solar cells is carried out using a computer-controlled x–y stage and the performance of the solar cell device is assessed. © 2024 The Authors. Advanced Engineering Materials published by Wiley-VCH GmbH.