Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
Publication date: 20th April 2022
Perovskite solar cells (PSCs) is considered as a promising candidate to replace the commercial high-performance silicon solar cells at low costs, with the champion efficiency of single junction PSCs reaching 25.8% in 2022 in the laboratory. However, as the champion PCSs gradually approach their theoretical limit (30.14% for materials with Eg=1.5 eV), improving the optical designs of the devices will eventually become the major driving force for further improvements on the device efficiency.[1] Among various light management approaches to improve the efficiency of PSCs, the implementation of the plasmonic nanoparticles (NPs), utilising a phenomenon called localized surface plasmon resonances (LSPR), have shown great potential to improve the photon absorption and charge generation in the device.[2–4] These plasmonic NPs, usually made of gold or silver, can be placed in the electron transport layer (ETL), mesoporous scaffold, active layer or the hole transport layer (HTL) and devices with efficiency above 20% have been widely reported previously.[3,4] However, it remains unknown what the impact of incorporating these plasmonic NPs are to the stability and performance of these devices. In this work, silver nanoparticles with titanium oxide shell (AgNP@TiO2) are placed into various positions of the perovskite devices and the structural and optoelectronic properties of the perovskite layer are characterised. Three different compositions of perovskite layer (MAPbI3, Cs0.05(FA0.83MA0.17)0.95Pb(I0.83Br0.17)3, CsPbBr3) are fabricated in ambient air condition and investigated. Preliminary results have shown that the inclusion of NPs increases the photon absorption and photoluminescence of perovskite films, which in turn should improve the device efficiency, while XRD showed minimal influence of NPs on the crystal structure of perovskite films. My study will pave the way towards fabrication of highly efficient and stable perovskite solar cells.
Q.L is grateful for the support from the Chinese Scholarship Council (CSC) and the Faculty of Mathematical & Physical Sciences (MAPS) at University College London (UCL).
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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