Deposition of loosely bound organic D–A–π–A′ dyes on sensitized TiO2 film: a possible strategy to suppress charge recombination and enhance power conversion efficiency in dye-sensitized solar cells

2014 ◽  
Vol 2 (29) ◽  
pp. 11229-11234 ◽  
Author(s):  
Xiongwu Kang ◽  
Junxiang Zhang ◽  
Anthony J. Rojas ◽  
Daniel O'Neil ◽  
Paul Szymanski ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Tio2 Film ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Direct Arylation ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

A D–A–π–A′ dye for dye-sensitized solar cells was synthesized via sequential C–H direct arylation; the photovoltaic performance was enhanced by deposition of additional dye on TiO2

Photovoltaic performance and power conversion efficiency prediction of double fence porphyrins

2021 ◽  
Author(s):  
Canpu Yang ◽  
Peng Song ◽  
Reda El-Shishtawy ◽  
Fengcai Ma ◽  
Yuanzuo Li
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
High Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Zinc Porphyrin ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

To explore high efficiency dye-sensitized solar cells (DSSCs), two experimentally derived (single fence and double fence porphyrins) and two theoretically designed zinc porphyrin molecules with D-D-π-A-A configurations were studied. Density...

Improved Efficiency of TiO2 Nanotube Arrays with TiCl4 Treatment in Dye-Sensitized Solar Cells

2014 ◽  
Vol 633 ◽  
pp. 39-44
Author(s):  
Quan Tong Li ◽  
J. Zhang ◽  
S.Q. Li ◽  
J. Xie ◽  
Hao Wang
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Photovoltaic Performance ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Nanotube Arrays ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

In this work, highly-ordered TiO2 nanotubes arrays were fabricated by two-step anodic oxidation method to serve as photoanodes for dye-sensitized solar cells. We investigated the effect of TiCl4 treatment on the microstructure and morphologies of TiO2 nanotubes arrays. It is found that the TiCl4 treatment can generally introduce 10-15 nm TiO2 nanoparticles into the TiO2 nanotube arrays. The photovoltaic performance of dye-sensitized solar cells is related to the concentration and treated-time of TiCl4 treatment. A power conversion efficiency of 7.63% was achieved for dye-sensitized solar cell with photoanode treated by 0.04 M TiCl4 for 60min. The improved power conversion efficiency can be attributed to the increased available surface for dye adsorption in photoanodes.

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.

Push–pull type alkoxy-wrapped N-annulated perylenes for dye-sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (84) ◽  
pp. 81184-81190 ◽  
Author(s):  
Qingbiao Qi ◽  
Jing Zhang ◽  
Soumyajit Das ◽  
Wangdong Zeng ◽  
Jie Luo ◽  
...  
Keyword(s):  
Solar Cells ◽  
Power Conversion Efficiency ◽  
Conversion Efficiency ◽  
Power Conversion ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Three push–pull type, alkoxy-wrapped N-annulated perylene based sensitizers were synthesized and power conversion efficiency up to 8.38% was achieved.

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