Plasmonic‐Induced Photon Recycling in Metal Halide Perovskite Solar Cells. (8th July 2015)

• Record Type: Journal Article
• Authors: Saliba, Michael; Zhang, Wei; Burlakov, Victor M.; Stranks, Samuel D.; Sun, Yao; Ball, James M.; Johnston, Michael B.; Goriely, Alain; Wiesner, Ulrich; Snaith, Henry J.
• Is Part Of: Advanced functional materials. Volume 25:Number 31(2015)
• Page Start: 5038
• Page End: 5046
• Publication Date: 2015-07-08
• Subjects: perovskite solar cells -- core–shell nanoparticles -- plasmonics; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201500669
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract : Organic–inorganic metal halide perovskite solar cells have emerged in the past few years to promise highly efficient photovoltaic devices at low costs. Here, temperature‐sensitive core–shell Ag@TiO2 nanoparticles are successfully incorporated into perovskite solar cells through a low‐temperature processing route, boosting the measured device efficiencies up to 16.3%. Experimental evidence is shown and a theoretical model is developed which predicts that the presence of highly polarizable nanoparticles enhances the radiative decay of excitons and increases the reabsorption of emitted radiation, representing a novel photon recycling scheme. The work elucidates the complicated subtle interactions between light and matter in plasmonic photovoltaic composites. Photonic and plasmonic schemes such as this may help to move highly efficient perovskite solar cells closer to the theoretical limiting efficiencies. Abstract : Adding plasmonic core–shell nanoparticles (Ag@TiO2 ) to perovskite solar cells is shown to improve the photo­current and thus the overall efficiency. A theoretical model, introducing a novel photon recycling scheme, predicts that highly polarizable nanoparticles act as antennas for light re‐emitted from radiative recombination. The work elucidates the complicated, subtle interactions between light and matter in plasmonic photovoltaic composites.