Coexisting and cooperating light-matter interaction regimes in a polaritonic photovoltaic system
Year: 2023
Authors: Caligiuri V., Siprova S., Patra A., Lio GE., Termine R., Cilurzo S., Golemme A., De Luca A.
Autors Affiliation: Univ Calabria, Dept Phys, via P Bucci 31C, I-87036 Arcavacata Di Rende, CS, Italy; CNR Nanotec, UOS Rende, via P Bucci 31D, I-87036 Arcavacata Di Rende, CS, Italy; Ist Italiano Tecnol, via Morego 30, I-16163 Genoa, GE, Italy; Univ Florence, Phys Dept, Via Nello Carrara 1, I-50019 Florence, Italy; Univ Florence, European Lab Nonlinear Spect LENS, Via Nello Carrara 1, I-50019 Florence, Italy; CNR, Natl Inst Opt, CNR INO, I-50019 Sesto Fiorentino, FI, Italy; Unita INSTM Calabria, LASCAMM CR, via P Bucci 14C, I-87036 Arcavacata Di Rende, CS, Italy.
Abstract: Common quantum frameworks of light-matter coupling demonstrate the interaction between an atom and a cavity occurring through a single feedback channel: an exciton relaxes by emitting a photon that is stored in the cavity for several roundtrips before being re-absorbed to create another exciton, and so on. However, the possibility for the excited system to relax through two different channels belonging to two different regimes has been, until now, neglected. Here, we investigate the case in which the strong coupling regime and the photovoltaic effect cooperate to enhance the wavelength-dependent photocurrent conversion efficiency (defined as the incident photons to converted electrons ratio, namely the external quantum efficiency-EQE) of a photovoltaic cell specifically engineered to behave as an optical cavity tuned to the excitonic transition of the embedded active material (CH3NH3PbI3 perovskite). We exploit the angular dispersion of such photovoltaic cell to show that when the cavity mode approaches the energy of the exciton, the strong coupling regime is achieved and the EQE is significantly enhanced with respect to a classic configuration serving as a benchmark. Our findings do not aim at demonstrating an immediate impact in enhancing the performance of photovoltaic systems but, rather, constitute a proof-of-principle experimental demonstration of how the photovoltaic effect can benefit from the generation of polaritons. Nonetheless, such a peculiar cooperating dual-light-matter interaction could be exploited in future polaritonic photovoltaic architectures.
Journal/Review: JOURNAL OF OPTICS
Volume: 25 (10) Pages from: 105401-1 to: 105401-10
More Information: The presen t work was partially financed by Progetto STAR 2-PIR01_00008’-Ministero dell’Universita e Ricerca/Italian Ministry of University and Research.V C thanks the research project Componenti Optoelettronici Biodegradabili ed Eco-Sostenibili verso la nano-fotonica green’ (D.M. n. 1062, 10.08.2021, PON Ricerca e Innovazione’ 2014-2020), contract identification code 1062_R17_GREEN.G E L thanks the research project FSE-REACT EU’ financed by National Social Fund-National Operative Research Program and Innovation 2014-2020 (D.M. 1062/2021) contract identification code 10-G-15049-2.r V C thanks the research project Componenti Optoelettronici Biodegradabili ed Eco-Sostenibili verso la nano-fotonica green’ (D.M. n. 1062, 10.08.2021, PON Ricerca e Innovazione’ 2014-2020), contract identification code 1062_R17_GREEN.r G E L thanks the research project FSE-REACT EU’ financed by National Social Fund-National Operative Research Program and Innovation 2014-2020 (D.M. 1062/2021) contract identification code 10-G-15049-2.KeyWords: strong coupling; polaritonic photovoltaics; photovoltaics; meta-voltaics; perovskite; metal/insulator/metal cavitiesDOI: 10.1088/2040-8986/acf2acConnecting to view paper tab on IsiWeb: Click here