Molecular Engineering of Simple Metal‐Free Organic Dyes Derived from Triphenylamine for Dye‐Sensitized Solar Cell Applications

Abstract

Scheme1.Synthetic route to L156 and L224. [Pd 2 (dba) 3 ] = tris(dibenzylideneacetone)dipalladium,P ( o-tol) 3 = tri(o-tolyl)phosphine.

Probing photovoltaic performance in copper electrolyte dye-sensitized solar cells of variable TiO2 particle size using comprehensive interfacial analysis

“…Ferdowsi et al used TiO 2 particle sizes of 20 nm and 30 nm with the [Cu(tmby) 2 ] 2+/1+ electrolyte and newly synthesized sensitizers L156 and L224, which showed improvement in efficiency. 28 Cao et al also observed an improvement in PCE by replacing 20 nm TiO 2 particles with 30 nm TiO 2 particles under one sun illumination using the copper electrolyte. 17 Though the difference between 20 nm and 30 nm TiO 2 particles is minimal, it critically alters the surface area and porosity, which further influences the charge transfer process at the TiO 2 /electrolyte interface.…”

Rediscovering Armstrong’s quinoid theory with machine learning using quantum chemistry

“…This technique has accelerated the molecular-level structural design of photoelectronic devices 10,11 through facilitating charge generation in copy/print machines 12 , information storage in optical disks 13 , and development of photosensitiser materials for photodynamic therapy 14 . Recently, dye-sensitised photovoltaic cells that can harvest light with long wavelengths in the near-infrared (NIR) region-a key to sustainable life 6,15 . Simultaneously, several theories for designing NIR molecules have been developed, focusing on narrowing the HOMO/LUMO gap results in a red shift in the absorption.…”

Rational Design of Broadly Absorbing Boron Dipyrromethene-Carbazole Dyads for Dye-Sensitized Solar Cells: A DFT Study

“…To achieve high-efficiency DSSCs, different classes of sensitizers including ruthenium complexes, , porphyrins, quantum dots, chlorophyll-based dyes, and metal-free organic dyes , have been reported. These photosensitizers can broadly be divided into two major types: metal and metal-free dyes such as carbazole, indoline, coumarine, phosphole, thiophene, triphenylamine, and boron dipyrromethene (BODIPY). , The ruthenium-based sensitizers, such as N3 and black dyes, attributed to their wide absorption spectrum and high stability, have been regarded as champion dyes and have been employed as a standard of comparison for other sensitizers .…”

“…They focused on the influence of various electron-rich nitrogen-donating groups on the performance of the dyes. 17 To achieve high-efficiency DSSCs, different classes of sensitizers including ruthenium complexes, 18,19 porphyrins, 20 quantum dots, 21 chlorophyll-based dyes, 22 and metal-free organic dyes 23,24 have been reported. These photosensitizers can broadly be divided into two major types: metal and metalfree dyes such as carbazole, 25 indoline, 26 coumarine, 27 phosphole, 28 thiophene, 29 triphenylamine, 30 and boron dipyrromethene (BODIPY).…”