CuFeS2 colloidal nanocrystals as an efficient electrocatalyst for dye sensitized solar cells

2016 ◽  
Vol 52 (77) ◽  
pp. 11488-11491 ◽  
Author(s):  
Yihui Wu ◽  
Bin Zhou ◽  
Chi Yang ◽  
Shichao Liao ◽  
Wen-Hua Zhang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electrocatalytic Activity ◽  
Redox Reaction ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Electrochemical Stability ◽  
Colloidal Nanocrystals ◽  
Solution Approach ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Cubic CuFeS2 colloidal nanocrystals have been obtained via a facile solution approach and they demonstrate high electrocatalytic activity and excellent electrochemical stability in the redox reaction of I3−/I−, showing comparable photovoltaic performance to Pt in DSSCs.

Bismuth-based ternary nanowires as efficient electrocatalysts for dye sensitized solar cells

2017 ◽  
Vol 53 (39) ◽  
pp. 5445-5448 ◽  
Author(s):  
Yihui Wu ◽  
Bin Zhou ◽  
Chi Yang ◽  
Xin Zhou ◽  
Wen-Hua Zhang
Keyword(s):  
Solar Cells ◽  
Electrocatalytic Activity ◽  
Redox Reaction ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Highly Efficient ◽  
Sensitized Solar Cells

Bismuth based ternary colloidal nanowires have been employed as highly efficient electrocatalysts and demonstrate excellent electrocatalytic activity in the redox reaction of I3−/I−, showing superior photovoltaic performance to Pt in DSSCs.

scholarly journals NiS submicron cubes with efficient electrocatalytic activity as the counter electrode of dye-sensitized solar cells

2018 ◽  
Vol 5 (8) ◽  
pp. 180186 ◽  
Author(s):  
Qiongzhe Yu ◽  
Yashuai Pang ◽  
Qiwei Jiang
Keyword(s):  
Solar Cells ◽  
Electrocatalytic Activity ◽  
Counter Electrode ◽  
Low Cost ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Superior Performance ◽  
Pt Electrode ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this work, nickel sulfide (NiS) submicron cubes, synthesized by an easy hydrothermal method, were investigated as an efficient electrocatalytic material of dye-sensitized solar cells (DSSCs), to our knowledge, for the first time. Part of the NiS submicron cubes were grown together in a hydrothermal procedure and formed the connected submicron cube cluster. The NiS submicron cubes (with a diameter of 300–800 nm) showed excellent electrocatalytic activity and presented superior photovoltaic performance when it was used as an electrocatalytic material for the counter electrode (CE) of DSSCs. The CE composed of the NiS submicron cubes could achieve a photovoltaic efficiency of 6.4%, showing their superior performance compared with the typical Pt electrode (which with the corresponding conversion efficiency was 5.3% at the same condition). The low-cost NiS submicron cube electrode could be a competitive candidate to replace the traditional Pt electrode in DSSCs. The simple composition procedure of NiS submicron cubes could enable the low-cost mass production of an efficient NiS submicron cube electrode to be easily accomplished.

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.

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.

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