A one-pot solvothermal synthesis of hierarchical microspheres with radially assembled single-crystalline TiO2-nanorods for high performance dye-sensitized solar cells

2014 ◽  
Vol 2 (8) ◽  
pp. 1381-1385 ◽  
Author(s):  
Ziming He ◽  
Jing Liu ◽  
Jianwei Miao ◽  
Bin Liu ◽  
Timothy Thatt Yang Tan
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Solvothermal Synthesis ◽  
High Performance ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
One Pot ◽  
Dye Sensitized ◽  
Hierarchical Microspheres ◽  
Sensitized Solar Cells

A simple solvothermal strategy is presented to prepare morphology-tunable hierarchical TiO2 microspheres, and the microsphere-based photoanode exhibited a power conversion efficiency of 7.95%.

Metal-free branched alkyl tetrathienoacene (TTAR)-based sensitizers for high-performance dye-sensitized solar cells

2017 ◽  
Vol 5 (24) ◽  
pp. 12310-12321 ◽  
Author(s):  
Yamuna Ezhumalai ◽  
Byunghong Lee ◽  
Miao-Syuan Fan ◽  
Boris Harutyunyan ◽  
Kumaresan Prabakaran ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Performance ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Metal Free ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Organic Sensitizers

New branched alkyl tetrathienothiophene (TTAR)-based organic sensitizers with power conversion efficiency up to 11%.

High performance zinc stannate photoanodes in dye sensitized solar cells with cobalt complex mediators

2020 ◽  
Vol 56 (37) ◽  
pp. 5042-5045 ◽  
Author(s):  
Lingling Tao ◽  
Zhe Sun ◽  
Lei Chen ◽  
Mao Liang ◽  
Song Xue
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Performance ◽  
Power Conversion ◽  
Cobalt Complex ◽  
Dye Sensitized Solar Cells ◽  
Zinc Stannate ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

The combination of a zinc stannate photoanode and cobalt complex electrolyte in DSCs yields an impressive power conversion efficiency of 8.1%.

scholarly journals Highly uniform hierarchical Zn2SnO4 microspheres for the construction of high performance dye-sensitized solar cells

RSC Advances ◽  
2017 ◽  
Vol 7 (69) ◽  
pp. 43403-43409 ◽  
Author(s):  
Xin Wang ◽  
Yu-Fen Wang ◽  
Qiu-Ping Luo ◽  
Jian-Hua Ren ◽  
De-Jun Li ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Hydrothermal Method ◽  
High Performance ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
One Step ◽  
Sensitized Solar Cells ◽  
Highly Uniform

3D hierarchical Zn2SnO4 with different sizes are fabricated via a one-step hydrothermal method. And the DSSCS devices based on Zn2SnO4 microspheres photoanode are designed. The 1.20 μm Zn2SnO4 microspheres show the best power conversion efficiency.

scholarly journals Precise Surface State Control of Carbon Quantum Dots to Enhance Charge Extraction for Solar Cells

Nanomaterials ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 460
Author(s):  
Qiming Yang ◽  
Wen Yang ◽  
Yong Zhang ◽  
Wen Ge ◽  
Xin Yang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Carbon Quantum Dots ◽  
One Pot ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Dye-sensitized solar cells are regarded as promising candidates to resolve the energy and environmental issues in recent years, arising from their solution-processable fabrication technology and high power conversion efficiency. However, there are still several problems regarding how to accelerate the development of this type of photovoltaics, including the limited light-harvesting ability and high-production cost of molecular dye. In the current work, we have systematically studied the role of nitrogen-doped carbon quantum dots (N-CQDs) as co-sensitizers in traditional dye sensitized solar cells. A series of N-CQDs have been prepared by employing chitosan as a precursor via one-pot hydrothermal technology for various times, demonstrating a maximized efficiency as high as 0.089% for an only N-CQDs-based device. Moreover, the co-sensitized solar cell based on N719 dye (C58H86N8O8RuS2) and optimized N-CQDs shows significantly enhanced performance, yielding a solar-to-electric conversion efficiency of up to 9.15% under one standard sun (AM 1.5G) irradiation, which is much higher than the 8.5%-efficiency of the controlled device without N-CQDs. The matched characteristics of energy level, excellent up-convention, and FRET (Förster resonance energy transfer) abilities of N-CQDs are responsible for their improved power conversion efficiency.

Introducing chenodeoxycholic acid coadsorbent and strong electron-withdrawing group in indoline dyes to design high-performance solar cells: a remarkably theoretical improvement

2021 ◽  
Author(s):  
Lemin Mao ◽  
Shuopan Dun ◽  
Hehe Ren ◽  
Jiamin Jiang ◽  
Xugeng Guo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Chenodeoxycholic Acid ◽  
High Performance ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Strong Electron ◽  
Dye Sensitized ◽  
Electron Withdrawing Group ◽  
Sensitized Solar Cells

The addition of coadsorbents and the introduction of electron-withdrawing groups in dye sensitizers are considered to be feasible strategies for improving the power conversion efficiency (PCE) of dye-sensitized solar cells...

Spontaneous Enhancement of Power Conversion Efficiency in SnO2-Based Dye-Sensitized Solar Cells

2021 ◽  
Vol 11 (3) ◽  
pp. 674-678
Author(s):  
Shibing Zou ◽  
Lingting Song ◽  
Junhong Duan ◽  
Le Huang ◽  
Weiqing Liu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Donor-π-acceptor, triazine-linked porphyrin dyads as sensitizers for dye-sensitized solar cells

2015 ◽  
Vol 19 (01-03) ◽  
pp. 175-191 ◽  
Author(s):  
Ganesh D. Sharma ◽  
Galateia E. Zervaki ◽  
Kalliopi Ladomenou ◽  
Emmanuel N. Koukaras ◽  
Panagiotis P. Angaridis ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Carboxylic Acid ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Orbital Energy ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Two porphyrin dyads with the donor-π-acceptor molecular architecture, namely ( ZnP )-[triazine-gly]-( H 2 PCOOH ) and ( ZnP )-[triazine-Npip]-( H 2 PCOOH ), which consist of a zinc-metalated porphyrin unit and a free-base porphyrin unit covalently linked at their peripheries to a central triazine group, substituted either by a glycine in the former or a N-piperidine group in the latter, have been synthesized via consecutive amination substitution reactions of cyanuric chloride. The UV-vis absorption spectra and cyclic-voltammetry measurements of the two dyads, as well as theoretical calculations based on Density Functional Theory, suggest that they have suitable frontier orbital energy levels for use as sensitizers in dye-sensitized solar cells. Dye-sensitized solar cells based on ( ZnP )-[triazine-gly]-( H 2 PCOOH ) and ( ZnP )-[triazine-Npip]-( H 2 PCOOH ) have been fabricated, and they were found to exhibit power conversion efficiency values of 5.44 and 4.15%, respectively. Photovoltaic measurements (J–V curves) and incident photon to current conversion efficiency spectra of the two solar cells suggest that the higher power conversion efficiency value of the former solar cell is a result of its enhanced short circuit current, open circuit voltage, and fill factor values, as well as higher dye loading. This is ascribed to the existence of two carboxylic acid anchoring groups in ( ZnP )-[triazine-gly]-( H 2 PCOOH ), compared to one carboxylic acid group in ( ZnP )-[triazine-Npip]-( H 2 PCOOH ), which leads to a more effective binding onto the TiO 2 photoanode. Electrochemical impedance spectra show evidence that the ( ZnP )-[triazine-gly]-( H 2 PCOOH ) based solar cell exhibits a longer electron lifetime and more effective suppression of charge recombination reactions between the injected electrons and electrolyte.

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