Luminescent down-shifters and down-converters for third generation solar cells

Piotr Zabierowski (1) , Anatolie Gavriluta (1) , Charlène Crevant (2) , Aline Nonat (3) , Loïc J Charbonnière (3) , Thomas Fix (4) , Philippe Baranek (1, 5) , Frédérique Donsanti (5) , Anne-Laure Joudrier (2) , Laurent Lombez (2) , Jean-François Guillemoles (2)

1 IPVF - Institut Photovoltaïque d’Ile-de-France (ITE)
2 IPVF - Institut Photovoltaïque d’Ile-de-France (UMR)
3 DSA-IPHC - Département Sciences Analytiques et Interactions Ioniques et Biomoléculaires
4 ICube - Laboratoire des sciences de l'ingénieur, de l'informatique et de l'imagerie
5 EDF R&D - EDF R&D

The reflectance spectra as well I-V curves registered for the cells with LDS layer composed of Eu(III) luminescent complex with the highest QY. EQE plots for the CIGS without and with LDS layers encapsulated in different types of polymers. The solar spectrum AM1.5G (red line) compared to the absorption spectrum of silicon (black line). The UV photons can be efficiently shifted into region of maximum absorbance by downconversion (DC) or dowshifting (DS) while the NIR photons by upconversion (UC); shown on the scheme. The chemical structure of the ligands and complexes of Eu 3+ used to produce the LDS layers.[3, 4, 5] Rectangles denote the type of co-ligand and circle denotes the R substitution in tris-ligand of the complex in reference to QY plot below. The QY of the complexes of Eu 3+ , measured in solid state at room temperature. The labels (circle+rectangle) represent combination of ligands in the Eu 3+ complexes depicted above. Representation of down-shifting effect of the LDS layers based on Eu 3+ complexes presented in this communication = ∫ ∫ = ∫ −) − ()) () ∫ − = ∫ (−) ∫ = ∫ ∫ = ∫ − ∫ = − − − = − − − [ + − ] = − − = ∫ − ∫ Legend: EQE-external quantum efficiency; PLQY-photoluminescence quantum yield; ASM-absorption spectral matching; RO-radiative overlap; ESM-emission spectral matching; PA-parasitic absorption; J sc-short circuit current; Rc-average reflection at the air cover interface; Q-collection probability; P-probablility of the downshifted photon emitted within the escape cone; r-probability of the downshifted photon being reabsorbed by another dye molecule; n-refractive index of the medium. References The chemical structures of lumogen family compounds incorporated into PMDS polymer matrix, together with emission and transmittance spectra of the LDS thin films at room temperature. Transmittance and emission spectra for QD LDSL The QY of emission of acetone solutions of studied QDs at room temperature. Radar graph comparing the figures of merit[2] for the studied LDSL • The cascades of lumogen dyes are considered to improove RO and ASM figures of merit of the lumogen single-dye LDSL [6, 7] • Among studied LSDL the most promising results with CIGS were found for Eu(III) luminescent down-shifters [3, 4, 5] • The overall gain in efficiency of the CIGS solar cells with europium down-shifters reached 0.8% [5] • Further work on development of supramolecular down-converting layers is ongoing 1. M. A. Green, Physica E: Low-dimensional Systems and Nanostructures, 2002, 14, 65-70. Different technologies are developed:-Concentrator solar cells-Multijunctions-Hot carriers-frequency conversion : DC/DS, UC DS/DC and UC realisation:-inclusion of fluorophores in a matrix-encapsulation of fluorophores in top/middle/bottom layers-fluorophores: organic dyes, lanthanide compounds, quantum dots, nanoparticles

Domaines: Chimie

Piotr Zabierowski, Anatolie Gavriluta, Charlène Crevant, Aline Nonat, Loïc J Charbonnière, et al.. Luminescent down-shifters and down-converters for third generation solar cells. 47th IUPAC World Chemistry Congress (IUPAC 2019), Jul 2019, Paris, France. 2019. ⟨hal-03024085⟩