scholarly journals Can nitro groups really anchor onto TiO2? Case study of dye-to-TiO2adsorption using azo dyes with NO2substituents

2016 ◽  
Vol 18 (28) ◽  
pp. 19062-19069 ◽  
Author(s):  
Lei Zhang ◽  
Jacqueline M. Cole
Keyword(s):  
Solar Cells ◽  
Azo Dyes ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Anchoring Group ◽  
Sensitized Solar Cells

Molecular rationalization of the photovoltaic performance of dye-sensitized solar cells that employ azo dyes bearing a NO2anchoring group.

scholarly journals Incorporation of Kojic Acid-Azo Dyes on TiO2 Thin Films for Dye Sensitized Solar Cells Applications

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Carolynne Zie Wei Sie ◽  
Zainab Ngaini
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Azo Dyes ◽  
Kojic Acid ◽  
Organic Dyes ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Tio2 Thin Films ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Sensitization of heavy metal free organic dyes onto TiO2 thin films has gained much attention in dye sensitized solar cells (DSSCs). A series of new kojic acid based organic dyes KA1–4 were synthesized via nucleophilic substitution of azobenzene bearing different vinyl chains A1–4 with kojyl chloride 4. Azo dyes KA1–4 were characterized for photophysical properties employing absorption spectrometry and photovoltaic characteristic in TiO2 thin film. The presence of vinyl chain in A1–4 improved the photovoltaic performance from 0.20 to 0.60%. The introduction of kojic acid obtained from sago waste further increases the efficiency to 0.82–1.54%. Based on photovoltaic performance, KA4 achieved the highest solar to electrical energy conversion efficiency (η = 1.54%) in the series.

Fabrication and Photovoltaic Performance of Nano-TiO2 Based Dye Sensitized Solar Cells Using Azo Dyes as Photosensitizers

2016 ◽  
Vol 11 (6) ◽  
pp. 715-722 ◽  
Author(s):  
Raman Kumar Saini ◽  
Devender Singh ◽  
Shri Bhagwan ◽  
Vandna Nishal ◽  
. Sonika ◽  
...  
Keyword(s):  
Solar Cells ◽  
Azo Dyes ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Nano Tio2 ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Co-sensitization of Ru(ii) complex with terthiophene-based D–π–π–A metal-free organic dyes for highly efficient dye-sensitized solar cells: influence of anchoring group on molecular geometry and photovoltaic performance

2018 ◽  
Vol 42 (14) ◽  
pp. 11430-11437 ◽  
Author(s):  
Mohamed R. Elmorsy ◽  
Rui Su ◽  
Ahmed A. Fadda ◽  
H. A. Etman ◽  
Eman H. Tawfik ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Molecular Geometry ◽  
Metal Free ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Anchoring Group ◽  
Sensitized Solar Cells

In this work, we studied the photovoltaic performance of two novel metal-free organic dyes carrying the same donor but with different anchoring moieties.

Impact of neutral and anion anchoring groups on the photovoltaic performance of triphenylamine sensitizers for dye-sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (32) ◽  
pp. 26559-26567 ◽  
Author(s):  
Thogiti Suresh ◽  
Ramesh Kumar Chitumalla ◽  
Nguyen Thi Hai ◽  
Joonkyung Jang ◽  
Tae Jin Lee ◽  
...  
Keyword(s):  
Solar Cells ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Anchoring Group ◽  
Anchoring Groups ◽  
Sensitized Solar Cells

Triphenylamine-based sensitizer with a carboxylate anchoring group (COO−) was synthesized and compared with neutral dye (COOH) for DSSC application.

Tetraphenylethylene-bridged double-branched sensitizers featuring hetero-donors for dye-sensitized solar cells

2020 ◽  
Vol 44 (30) ◽  
pp. 12909-12915
Author(s):  
Yi-Qiao Yan ◽  
Yi-Zhou Zhu ◽  
Pan-Pan Dai ◽  
Jun Han ◽  
Mao Yan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Dyes ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Effects of hetero-donors on the photovoltaic performance of tetraphenylethylene-based organic dyes were systematically investigated.

scholarly journals Eco-Friendly Dye-Sensitized Solar Cells Based on Water-Electrolytes and Chlorophyll

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2150
Author(s):  
Ji-Hye Kim ◽  
Sung-Yoon Park ◽  
Dong-Hyuk Lim ◽  
So-Young Lim ◽  
Jonghoon Choi ◽  
...  
Keyword(s):  
Solar Cells ◽  
Plasma Treatment ◽  
Ruthenium Complex ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Synthesis Process ◽  
Dye Sensitized ◽  
Water Based ◽  
Sensitized Solar Cells

Organic solvents used for electrolytes of dye-sensitized solar cells (DSSCs) are generally not only toxic and explosive but also prone to leakage due to volatility and low surface tension. The representative dyes of DSSCs are ruthenium-complex molecules, which are expensive and require a complicated synthesis process. In this paper, the eco-friendly DSSCs were presented based on water-based electrolytes and a commercially available organic dye. The effect of aging time after the device fabrication and the electrolyte composition on the photovoltaic performance of the eco-friendly DSSCs were investigated. Plasma treatment of TiO2 was adopted to improve the dye adsorption as well as the wettability of the water-based electrolytes on TiO2. It turned out that the plasma treatment was an effective way of improving the photovoltaic performance of the eco-friendly DSSCs by increasing the efficiency by 3.4 times. For more eco-friendly DSSCs, the organic-synthetic dye was replaced by chlorophyll extracted from spinach. With the plasma treatment, the efficiency of the eco-friendly DSSCs based on water-electrolytes and chlorophyll was comparable to those of the previously reported chlorophyll-based DSSCs with non-aqueous electrolytes.

scholarly journals In Depth Analysis of Photovoltaic Performance of Chlorophyll Derivative-Based “All Solid-State” Dye-Sensitized Solar Cells

Molecules ◽  
2020 ◽  
Vol 25 (1) ◽  
pp. 198 ◽  
Author(s):  
Michèle Chevrier ◽  
Alberto Fattori ◽  
Laurent Lasser ◽  
Clément Kotras ◽  
Clémence Rose ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solid State ◽  
Density Functional ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Hole Transport ◽  
Tio2 Electrode ◽  
Dye Sensitized ◽  
Depth Analysis ◽  
Sensitized Solar Cells

Chlorophyll a derivatives were integrated in “all solid-state” dye sensitized solar cells (DSSCs) with a mesoporous TiO2 electrode and 2′,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene as the hole-transport material. Despite modest power conversion efficiencies (PCEs) between 0.26% and 0.55% achieved for these chlorin dyes, a systematic investigation was carried out in order to elucidate their main limitations. To provide a comprehensive understanding of the parameters (structure, nature of the anchoring group, adsorption …) and their relationship with the PCEs, density functional theory (DFT) calculations, optical and photovoltaic studies and electron paramagnetic resonance analysis exploiting the 4-carboxy-TEMPO spin probe were combined. The recombination kinetics, the frontier molecular orbitals of these DSSCs and the adsorption efficiency onto the TiO2 surface were found to be the key parameters that govern their photovoltaic response.

A Hydroxamic Acid Anchoring Group for Durable Dye-Sensitized Solar Cells Incorporating a Cobalt Redox Shuttle

ChemSusChem ◽  
2017 ◽  
Vol 10 (17) ◽  
pp. 3347-3351 ◽  
Author(s):  
Tomohiro Higashino ◽  
Yuma Kurumisawa ◽  
Ning Cai ◽  
Yamato Fujimori ◽  
Yukihiro Tsuji ◽  
...  
Keyword(s):  
Solar Cells ◽  
Hydroxamic Acid ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Redox Shuttle ◽  
Anchoring Group ◽  
Sensitized Solar Cells
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