title: CH3NH3PbBr3Perovskite Nanocrystals as Efficient Light-Harvesting Antenna for Fluorescence Resonance Energy Transfer.
abstract: Hybrid perovskites have created enormous research interest as a low-cost material for high-performance photovoltaic devices, light-emitting diodes, photodetectors, memory devices and sensors. Perovskite materials in nanocrystal form that display intense luminescence due to the quantum confinement effect were found to be particularly suitable for most of these applications. However, the potential use of perovskite nanocrystals as a light-harvesting antenna for possible applications in artificial photosynthesis systems is not yet explored. In the present work, we study the light-harvesting antenna properties of luminescent methylammonium lead bromide (CH3NH3PbBr3)-based perovskite nanocrystals using fluorescent dyes (rhodamine B, rhodamine 101, and nile red) as energy acceptors. Our studies revealed that CH3NH3PbBr3nanocrystals are an excellent light-harvesting antenna, and efficient fluorescence resonance energy transfer occurs from the nanocrystals to fluorescent dyes. Further, the energy transfer efficiency is found to be highly dependent on the number of anchoring groups and binding ability of the dyes to the surface of the nanocrystals. These observations may have significant implications for perovskite-based light-harvesting devices and their possible use in artificial photosynthesis systems.
authors.affiliation: Photosciences and Photonics Section, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, 695 019, India.|Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110 001, India.
authors.forename: Chinnadurai
authors.initials: C
authors.lastname: Muthu
authors.affiliation: Photosciences and Photonics Section, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, 695 019, India.
authors.forename: Anuja
authors.initials: A
authors.lastname: Vijayan
authors.affiliation: Photosciences and Photonics Section, CSIR-National Institute for Interdisciplinary Science and Technology (NIIST), Thiruvananthapuram, 695 019, India.|Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110 001, India.
authors.forename: Vijayakumar C
authors.identifier: http://orcid.org/0000-0001-5347-6799
authors.initials: VC
authors.lastname: Nair
mesh_terms: D064751:Ammonium Compounds / Q000737:chemistry*; D017610:Calcium Compounds / Q000737:chemistry*; D031541:Fluorescence Resonance Energy Transfer; D005456:Fluorescent Dyes / Q000737:chemistry*; D007854:Lead / Q000737:chemistry*; D008027:Light; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry*; D014025:Titanium / Q000737:chemistry*
chemical_list: D064751:Ammonium Compounds; D017610:Calcium Compounds; D005456:Fluorescent Dyes; D010087:Oxides; C059910:perovskite; D007854:Lead; D014025:Titanium
keywords: energy transfer; hybrid perovskites; light harvesting; nanomaterials; photoluminescence