Enhance the performance of dye-sensitized solar cells by co-sensitization of 2,6-bis(iminoalkyl)pyridine and N719

Co-sensitization of TiO 2 -MWCNTs hybrid anode for efficient dye-sensitized solar cells

“…Therefore, the co -sensitization strategy is applied to the organic dyes with complementary absorption spectra to obtain a broader and a more intense absorption band, thus increasing the performance of the DSSC [13][14][15]. Many co-sensitization systems have been proposed and demonstrated improved photovoltaic performance, such as ruthenium complex co-sensitized with an organic dye [16][17][18], porphyrin [19][20][21] or phtalocyanine [22][23][24] co-sensitized with an organic dye, and organic dye co-sensitized with another organic dye [25,26]. Another major cause of low efficiency of DSSCs is the recombination of injected electrons with the electrolyte (dark current) [27].…”

Enhancing the Spectral Response of Mesoporous ZnO Films of Dye–sensitized Solar Cells by Incorporating Metal-free Organic Sensitizer and N719 dye

“…Pellejà et al applied the co-sensitization with the organic dye, D205, and a novel donor-(p bridge)-acceptor (D-p-A) porphyrin sensitizer, VC-70, to obtained an improved h of 8.10% for the pertinent DSSC [7]. Wei et al prepared co-sensitized photoelectrodes for DSSCs with the 2,6-bis(iminoalkyl) pyridine and N719 dyes, and obtained enhanced spectra responses and reduced interfacial charge transfer resistances [8]. Yang et al achieved a h of 9.5% by performing a systematic analysis for D131, D149, and N3 ternary dye mixtures on the performance of DSSCs [12].…”

“…The smaller molecules of the organic dye can adsorb on the surface of the semiconductor where the large metal-based dye cannot adsorb on, namely, the small organic dye can fill the gaps between the larger metal-based sensitizers. Several organic dyes have been proven to be suitable on the application of the co-sensitization to enhance the light absorption range and therefore the performance of the DSSCs [6][7][8][9][10][11]. Pellejà et al applied the co-sensitization with the organic dye, D205, and a novel donor-(p bridge)-acceptor (D-p-A) porphyrin sensitizer, VC-70, to obtained an improved h of 8.10% for the pertinent DSSC [7].…”

Optical and electrical properties of purpurin and alizarin complexone as sensitizers for dye-sensitized solar cells

“…Some researchers have fixed attention on designing and synthesizing novel dye sensitizers and seeking new natural dyes as the dye sensitizers for DSSCs [9][10][11][12][13][14][15]. Wei et al [9] synthesized three organic dyes 2,6-bis (iminoalkyl) pyridines (DM, DE, and DP) and assembled onto the nanocrystalline TiO 2 thin films to prepare the 2,6-bis (iminoalkyl) pyridines/N719 co-sensitized photo electrodes for dye-sensitized solar cells. By co-sensitization, the spectra response of electrodes was enhanced and the overall conversion efficiency was increased by 28.91 % comparing with that for DSSCs only sensitized by N719.…”