The effect of coupling and di-anchoring group in the performance of triphenylamine-based dyes for dye-sensitized solar cells

Efficient Solar Cells Sensitized by Organic Concerted Companion Dyes Suitable for Indoor Lamps

“…Various strategies have been developed to construct highly efficient dyes like ruthenium complexes, [18,19] zinc porphyrins, [20–33] and organic dyes [34–43] to achieve nice photovoltaic performance under simulated sunlight (AM1.5G). In this regard, some D(–π–A) 2 type di‐anchored dyes have been constructed to improve the photovoltaic performance and stability compared to the congeners with only one anchor [44–48] . However, for such commonly used D(–π–A) 2 type dyes, it is difficult to effectively broaden the absorption spectra by introducing the second anchoring group because of the identical structures for both of the branches.…”

“…In this regard, some D(-π-A) 2 type di-anchored dyes have been constructed to improve the photovoltaic performance and stability compared to the congeners with only one anchor. [44][45][46][47][48] However, for such commonly used D(-π-A) 2 type dyes, it is difficult to effectively broaden the absorption spectra by introducing the second anchoring group because of the identical structures for both of the branches. To address this problem, our group has developed a novel class of panchromatic concerted companion (CC) dyes by covalently linking a porphyrin unit and an organic dye unit with complementary absorption profiles.…”

Effect of π-Spacer Length in Novel Xanthene-Linked l-(D−π–A)2-Type Dianchoring Dyes for Dye-Sensitized Solar Cells

“…Due to these drawbacks, the main directions of DSSCs’ research are focused on the increase in efficiency, improvement of stability, and making the technology more affordable. In recent years, researchers have made an enormous attempt to substitute the expensive platinum-based counter electron with cost-effective materials and at the same time improve its stability; − develop solid-state dye-sensitized solar cells to overcome electrolyte leakage; ,− and synthesize novel sensitizers with better light-harvesting capabilities and minimizing recombination processes. − In this regard, molecular engineering of sensitizing dyes offers great opportunities in boosting DSSC efficiency and stability. Recently, Zeng et al introduced the so-called “concerted companion dyes” with panchromatic absorption where two complementary dyes are covalently linked. − The linking of the two dyes offers benefits like the broadening of the absorption spectra and offers better attachment via two anchoring units.…”

Organic Electronics from Nature: Computational Investigation of the Electronic and Optical Properties of the Isomers of Bixin and Norbixin Present in the Achiote Seeds

“…A problem that still limits their efficiency is the low light-harvesting capability (LHC) [ 8 ]. Particularly, DSSCs emerged as technically and economically credible alternatives [ 1 , 2 , 3 , 9 , 10 , 11 , 12 , 13 , 14 , 15 ]. Their working principle considers increasing the LHC by including a layer of molecular dyes to potentialize the exciton creation.…”