In Depth Analysis of Photovoltaic Performance of Chlorophyll Derivative-Based “All Solid-State” Dye-Sensitized Solar Cells

Michèle Chevrier (1, 2) , Alberto Fattori (3) , Laurent Lasser (4) , Clément Kotras (2) , Clémence Rose , Michela Cangiotti (3) , David Beljonne (4) , Ahmad Mehdi (2) , Mathieu Surin (5) , Roberto Lazzaroni (5) , Philippe Dubois (5) , Maria Francesca Ottaviani (3) , Sébastien Richeter (2) , Johann Bouclé (6) , Sébastien Clément (2)

1 UMONS - University of Mons [Belgium]
2 ICGM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
3 DiSTeVA - Department of Earth, Life and Environment Sciences, University of Urbino
4 UMons - Université de Mons
5 CIRMAP - Centre d'Innovation et de Recherche en Matériaux Polymères
6 XLIM-RFEI - RF-ELITE : RF-Electronique Imprimée pour les Télécommunications et l'Energie

Chlorophyll a derivatives were integrated in "all solid-state" dye sensitized solar cells (DSSCs) with a mesoporous TiO 2 electrode and 2 ,2 ,7,7-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9-spirobifluorene as the hole-transport material. Despite modest power conversion efficiencies (PCEs) between 0.26% and 0.55% achieved for these chlorin dyes, a systematic investigation was carried out in order to elucidate their main limitations. To provide a comprehensive understanding of the parameters (structure, nature of the anchoring group, adsorption. . .) and their relationship with the PCEs, density functional theory (DFT) calculations, optical and photovoltaic studies and electron paramagnetic resonance analysis exploiting the 4-carboxy-TEMPO spin probe were combined. The recombination kinetics, the frontier molecular orbitals of these DSSCs and the adsorption efficiency onto the TiO 2 surface were found to be the key parameters that govern their photovoltaic response.

Mots clés: solid state dye sensitized solar cells; spirulina; chlorophyll; anchoring groups; EPR

Domaines: Physique [physics]; Matière Condensée [cond-mat]; Science des matériaux [cond-mat.mtrl-sci]; Physique [physics]; Physique [physics]; Optique [physics.optics]; Sciences de l'ingénieur [physics]; Micro et nanotechnologies/Microélectronique

Michèle Chevrier, Alberto Fattori, Laurent Lasser, Clément Kotras, Clémence Rose, et al.. In Depth Analysis of Photovoltaic Performance of Chlorophyll Derivative-Based “All Solid-State” Dye-Sensitized Solar Cells. Molecules, 2020, 25 (1), pp.198. ⟨10.3390/molecules25010198⟩. ⟨hal-02427794⟩