Shedding light on N719 dye adsorption mechanisms on Degussa (Evonik) P25 TiO2 nanoparticles towards dye-sensitized solar cell performance

This study investigates the adsorption behavior of N719 dye on Degussa (Evonik) P25 TiO2 nanoparticle films and its relationship to the photovoltaic performance of dye-sensitized solar cells (DSSCs). We fit the adsorption data using various isotherm models and found that the Langmuir model best desc...

Full description

Saved in:
Bibliographic Details
Published in:Powder technology 2024-10, Vol.446, p.120087, Article 120087
Main Authors: Amalina, Auliya Nur, Benu, Didi Prasetyo, Setiawan, Kevin Manuel, Nurhayati, Steky, Fry Voni, Milana, Phutri, Saepurahman, Sembiring, Kiky Corneliasari, Mukti, Rino Rakhmata, Yuliarto, Brian, Suendo, Veinardi
Format: Article
Language:English
Subjects:
adsorption
Adsorption isotherm
Carboxylate anchoring
Degussa P25 TiO2
Dye-sensitized solar cell
dyes
N719 dye
nanoparticles
Photovoltaic performance
solar cells
sorption isotherms
titanium dioxide
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This study investigates the adsorption behavior of N719 dye on Degussa (Evonik) P25 TiO2 nanoparticle films and its relationship to the photovoltaic performance of dye-sensitized solar cells (DSSCs). We fit the adsorption data using various isotherm models and found that the Langmuir model best describes the adsorption behavior. We also observed that the adsorption mechanism follows chemisorption with a small portion of physisorption, where anchoring groups react with Ti atoms on the surface of TiO2 particles via carboxylate and NCS groups. The photovoltaic performance measurements show that DSSC efficiency increases with the concentration of dye solution until it reaches saturation at around 0.5 mM. The saturation in DSSC efficiency may be due to the formation of multilayers of adsorbed dye on the surface of TiO2 particles at higher dye concentrations. Our findings provide insight into the adsorption behavior of N719 dye on TiO2 nanoparticles and its impact on DSSC performance. [Display omitted] •Adsorption of N719 dye on Degussa (Evonik) P25 follows the Langmuir isotherm model.•DSSC photovoltaic performance depends on the amount of adsorbed dye molecules.•Adsorption of N719 dye is mainly of chemisorption type via carboxylate anchoring.•Saturation of DSSC performance is due to the multilayer formation of adsorbed N719 dye.
ISSN:0032-5910
DOI:10.1016/j.powtec.2024.120087