Characterizing Charge Recombination Dynamics: From Perovskite Solar Cells to Luminescent Solar Concentrators
Bastiaan Bas de Jong a, Lucio Cinà b, Annalisa Santucci a
a Department of Biotechnology, Chemistry and Pharmacy, University of Siena, Via A. Moro 2, 53100, Siena, Italy
b Cicci Research srl, via Giordania 227, 58100, Grosseto, Italy
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Poster, Bastiaan Bas de Jong, 278
Publication date: 20th April 2022

Steady-state and dynamic electro-optical tests on hybrid organic-inorganic photovoltaic (PV) devices, when properly performed, can give advanced knowledge on physical parameters like charge carrier diffusion length or recombination times at the active layer/selective contact interface. The goal is to correlate information from steady-state and small-high perturbation dynamic tests (TPV, charge extraction, EIS, etc.). We developed a reliable analysis to investigate charge carrier recombination dynamics by quantifying and correlating internal and external quantum efficiency, recombination dynamics and radiative emission detection. Two case studies have been done and will be presented. One on luminescent solar concentrators (LSC) manufactured with a series of high quantum yield, donor-acceptor-donor photostable fluorophores showing a higher efficiency and lower recombination than state-of-the-art devices based on the Lumogen Red 305. The second on blade-coated perovskite solar cells (SC) fabricated fully in air, incorporating a bathocuproine (BCP) hole blocking buffer showing a 10% and 63% increase in efficiency compared to spin-coated BCP and without BCP, respectively.

This work was funded by COLOURS (POR-FESR Tuscany Region).

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