Novel unsymmetrically π-elongated porphyrin for dye-sensitized TiO₂cells

Abstract

A novel naphthyl-fused zinc porphyrin carboxylic acid has been synthesized and employed successfully in a dye-sensitized TiO2 solar cell, with a power conversion efficiency of 4.1%, which is improved by 50% relative to the unfused porphyrin reference cell.

Synthesis, characterization and application of trans-D–B–A-porphyrin based dyes in dye-sensitized solar cells

“…3, in THF. The emission maxima (Table S1) show characteristic vibronic bands for Dyes 1-5 at around 630 and 675 nm similar to those reported for other porphyrins [19,26].…”

“…Among all organic dyes, porphyrins and their derivatives have been considered as potential photosensitizers in DSSCs because they possess an intense Soret band at 400-450 nm and moderate Q bands at 500-650 nm [19][20][21][22][23][24][25]. However, porphyrin dyes showed low efficiency compared to Ru dyes for DSSCs due to their insufficient light-harvesting properties in the visible region.…”

Synthesis and characterization of trivalent metal porphyrin with NCS ligand for application in dye-sensitized solar cells

“…Furthermore, the photochemical and electrochemical stabilities, easy synthetic process and handy control of redox potential by metalation also make them as promising candidates for light harvesting dyes for DSSC [13]. Although many advantages have been put forwarded, porphyrins showed inferior performances compared to those high performance dyes for DSSC [14][15][16][17]. The main reason for such inferiority would be attributed to the mismatched absorption spectra to solar light distribution which leads to the low value of short circuit current.…”

“…In addition, the effects of electronic coupling between the porphyrin and the TiO 2 surface of porphyrin aggregation also result in the poor performance for DSSC. One way to tackle those problems is to elongate the p-system of porphyrin by modifying a b position with olefinic linkage, quinoxaline moiety or naphthyl group [12,17,18]. Until now, the most efficient porphyrin dye for DSSC was reported by Diau et al [19] and the porphyrin dye gave the Z up to 11%.…”

Fabrication of a porphyrin-based electrochemical biosensor for detection of nitric oxide released by cancer cells

“…Peculiarities of these compounds are their high degree of aromaticity and their unique chemical and thermal stability. They have gained great interest in the field of material sciences, as they find multiple applications in, e.g., solar cells and optoelectronics [15][16][17][18][19], catalysis [20], sensors [21,22], and as photodynamic therapy reagents [23][24][25][26].…”