• Energy Research

Tandem solar cells were developed for improved efficiency in connection with perovskite solar cells and dye-sensitized solar cells. The organic dye based on thioindigo and N719 were applied in fabricating dye-sensitized solar cells as photosensitizers. We achieved an 8.77% and 10.54% efficiency tandem solar cell formed by a top perovskite solar cell and dye-sensitized solar cells based on organic dye and N719 for the bottom cell, respectively. The photovoltage of tandem solar cells was reported about 1.1 V, but the photocurrent was limited by the dye-sensitized solar cells and was about 12.8 mAcm−2.

Tandem solar cells were developed for improved efficiency in connection with perovskite solar cells and dye-sensitized solar cells. The organic dye based on thioindigo and N719 were applied in fabricating dye-sensitized solar cells as photosensitizers. We achieved an 8.77% and 10.54% efficiency tandem solar cell formed by a top perovskite solar cell and dye-sensitized solar cells based on organic dye and N719 for the bottom cell, respectively. The photovoltage of tandem solar cells was reported about 1.1 V, but the photocurrent was limited by the dye-sensitized solar cells and was about 12.8 mAcm−2.

Abstract Acceptor electron groups play a key role in sensitizer proficiency in the DSSCs. To study this effect, a variety of acceptor electron groups were placed on a common scaffold. In this way, various intermediates and dyes were engineered, synthesized, purified and identified. Titanium dioxide and Na-doped TiO2 were employed to prepare of nanocrystalline layer of the photovoltaic devices. The blue movement was beholden in the UV–Visible test the coated photosensitizers on nanoparticle due to the J-type aggregation. To predict the usability of dyes in the structure of the solar cells, two methods, DFT and CV were employed. Finally, the DSSCs devices were prepared based on synthesized dyes and Na-doped TiO2 or TiO2. The photovoltaic device, which contains Dye 2, has the highest Jsc. The operation of photovoltaic device based on titanium dioxide is lower than that of Na-doped TiO2.

Abstract Acceptor electron groups play a key role in sensitizer proficiency in the DSSCs. To study this effect, a variety of acceptor electron groups were placed on a common scaffold. In this way, various intermediates and dyes were engineered, synthesized, purified and identified. Titanium dioxide and Na-doped TiO2 were employed to prepare of nanocrystalline layer of the photovoltaic devices. The blue movement was beholden in the UV–Visible test the coated photosensitizers on nanoparticle due to the J-type aggregation. To predict the usability of dyes in the structure of the solar cells, two methods, DFT and CV were employed. Finally, the DSSCs devices were prepared based on synthesized dyes and Na-doped TiO2 or TiO2. The photovoltaic device, which contains Dye 2, has the highest Jsc. The operation of photovoltaic device based on titanium dioxide is lower than that of Na-doped TiO2.

AbstractToday, the issue of reducing industrial pollution has received much attention. The textile industry is of high important throughout the world. However, its by‐product wastewater pollutes the environment. The first approach was the selection of plant‐based dyes (madder and reseda) and the application of tannin‐based mordants (pomegranate peel and myrobalan). The extraction of madder, reseda, and pomegranate peel in water with the ultrasound‐assisted method was done. In this article, pre‐mordanting method was used for mordanting and Cu (copper) and alum were selected as the mineral mordant to compare the results. Fourier Transform Infrared Spectroscopy method was employed to analyze the obtained extracts and to investigate the changes in the fibers. The results showed that K/S (color strength) values of the dyed samples increased by increasing the dye concentration. The colorfastness properties of the samples were investigated according the ISO standards.

AbstractToday, the issue of reducing industrial pollution has received much attention. The textile industry is of high important throughout the world. However, its by‐product wastewater pollutes the environment. The first approach was the selection of plant‐based dyes (madder and reseda) and the application of tannin‐based mordants (pomegranate peel and myrobalan). The extraction of madder, reseda, and pomegranate peel in water with the ultrasound‐assisted method was done. In this article, pre‐mordanting method was used for mordanting and Cu (copper) and alum were selected as the mineral mordant to compare the results. Fourier Transform Infrared Spectroscopy method was employed to analyze the obtained extracts and to investigate the changes in the fibers. The results showed that K/S (color strength) values of the dyed samples increased by increasing the dye concentration. The colorfastness properties of the samples were investigated according the ISO standards.

The ongoing age is the time of sustainability, where in the current pandemic scenario, which is getting worse, needs treatment with nature rather than chemical-based products. In this study, microwaves (M.W. rays) treatments as extraction mode for Esfand ( P. harmala) have been revived for polyamide (nylon) dyeing. The water solubilized and acid solubilized filtrates and polyamide (nylon fabrics) were treated M.W. rays up to 10 min with an interval of 2 min. Mordanting with chemicals and plant extracts before and after dyeing was done at 60°C–80°C. It has been found the application of M.W. ray treatment for 4 min., to 30 mL of extract of 8 pH containing 4 g/100 mL of Table salt as leveling agent has given desired results when employed at 55°C for 55 min. Statistical analysis of dyeing variables through R.S.M., and two way-Anova shows that the effect of these variables has been observed highly significant. Experimentally it has been observed that the application of extract for dyeing of polyamide (nylon fabric) has given good results when chemical or bio-mordanted at selected conditions. Practically, Esfand seeds has ability for bio-coloration of surface modified polyamide fabric (nylon fabric), and utilization of pomegranate extract as bio-mordant and tannic acid as sustainable chemical mordant has furnished colorfast shades.

The ongoing age is the time of sustainability, where in the current pandemic scenario, which is getting worse, needs treatment with nature rather than chemical-based products. In this study, microwaves (M.W. rays) treatments as extraction mode for Esfand ( P. harmala) have been revived for polyamide (nylon) dyeing. The water solubilized and acid solubilized filtrates and polyamide (nylon fabrics) were treated M.W. rays up to 10 min with an interval of 2 min. Mordanting with chemicals and plant extracts before and after dyeing was done at 60°C–80°C. It has been found the application of M.W. ray treatment for 4 min., to 30 mL of extract of 8 pH containing 4 g/100 mL of Table salt as leveling agent has given desired results when employed at 55°C for 55 min. Statistical analysis of dyeing variables through R.S.M., and two way-Anova shows that the effect of these variables has been observed highly significant. Experimentally it has been observed that the application of extract for dyeing of polyamide (nylon fabric) has given good results when chemical or bio-mordanted at selected conditions. Practically, Esfand seeds has ability for bio-coloration of surface modified polyamide fabric (nylon fabric), and utilization of pomegranate extract as bio-mordant and tannic acid as sustainable chemical mordant has furnished colorfast shades.