Bile acid derivatives as novel co-adsorbents for enhanced performance of blue dye-sensitized solar cells.

ABSTRACT: Diketopyrrolopyrrole-based blue dyes in dye-sensitized solar cells (DSCs) exhibit promise for building-integrated photovoltaics, but their efficiency is compromised by dye aggregation-induced charge recombination. Novel bile acid derivative co-adsorbents featuring bulky hydrophobic substituents at the 3-β position were synthesized to address this challenge. These molecules, designed to modulate intermolecular electronic interactions, effectively altered the TiO₂ surface coverage dynamics, as evidenced by UV-Vis spectroscopy and dye-loading kinetics. Systematic variation of hydrophilic substituents revealed structure-function relationships in dye separation efficacy. Devices incorporating these co-adsorbers achieved power conversion efficiencies (PCE) of 7.6%, surpassing referenc

SUBMITTER: Sasitharan K 

PROVIDER: S-EPMC11894181 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature