Squaraine Dyes with Pyrylium and Thiopyrylium Components for Harvest of Near Infrared Light in Dye-Sensitized Solar Cells

2014 ◽  
Vol 118 (30) ◽  
pp. 16618-16625 ◽  
Author(s):  
Takeshi Maeda ◽  
Shohei Nitta ◽  
Hidekazu Nakao ◽  
Shigeyuki Yagi ◽  
Hiroyuki Nakazumi
Keyword(s):  
Solar Cells ◽  
Near Infrared ◽  
Dye Sensitized Solar Cells ◽  
Infrared Light ◽  
Near Infrared Light ◽  
Squaraine Dyes ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Wide-Range Near-Infrared Sensitizing 1H-Benzo[c,d]indol-2-ylidene-Based Squaraine Dyes for Dye-Sensitized Solar Cells

2018 ◽  
Vol 83 (8) ◽  
pp. 4389-4401 ◽  
Author(s):  
Yuki Haishima ◽  
Yasuhiro Kubota ◽  
Kazuhiro Manseki ◽  
Jiye Jin ◽  
Yoshiharu Sawada ◽  
...  
Keyword(s):  
Solar Cells ◽  
Near Infrared ◽  
Dye Sensitized Solar Cells ◽  
Squaraine Dyes ◽  
Dye Sensitized ◽  
Wide Range ◽  
Sensitized Solar Cells

Application of benz[c,d]indolenine-based unsymmetrical squaraine dyes to near-infrared dye-sensitized solar cells

2017 ◽  
Vol 141 ◽  
pp. 457-462 ◽  
Author(s):  
Masaki Matsui ◽  
Yuki Haishima ◽  
Yasuhiro Kubota ◽  
Kazumasa Funabiki ◽  
Jiye Jin ◽  
...  
Keyword(s):  
Solar Cells ◽  
Near Infrared ◽  
Dye Sensitized Solar Cells ◽  
Squaraine Dyes ◽  
Dye Sensitized ◽  
Near Infrared Dye ◽  
Sensitized Solar Cells

scholarly journals A dual-functional NaLuF4:Yb3+/Er3+ material for enhancing photon harvesting in dye-sensitized solar cells

RSC Advances ◽  
2017 ◽  
Vol 7 (61) ◽  
pp. 38506-38511 ◽  
Author(s):  
Haiyong Guo ◽  
Zhen Hu ◽  
Li Zhao ◽  
Li Wan ◽  
Yadan Wu ◽  
...  
Keyword(s):  
Solar Cells ◽  
Light Scattering ◽  
Near Infrared ◽  
Light Harvesting ◽  
Dye Sensitized Solar Cells ◽  
Infrared Light ◽  
Dye Sensitized ◽  
Dual Functional ◽  
New Strategy ◽  
Sensitized Solar Cells

A new strategy to improve the efficiency of dye-sensitized solar cells by using the external near-infrared light harvesting and light-scattering dual-functional upconversion (UC) material NaLuF4:Yb3+/Er3+ is proposed.

scholarly journals Pyran-Squaraine as Photosensitizers for Dye-Sensitized Solar Cells: DFT/TDDFT Study of the Electronic Structures and Absorption Properties

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Reda M. El-Shishtawy ◽  
Shaaban A. Elroby ◽  
Abdullah M. Asiri ◽  
Rifaat H. Hilal
Keyword(s):  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Nbo Analysis ◽  
Basis Set ◽  
Absorption Properties ◽  
Charge Delocalization ◽  
Squaraine Dyes ◽  
Dye Sensitized ◽  
Donor Acceptor ◽  
Sensitized Solar Cells

In an effort to provide, assess, and evaluate a theoretical approach which enables designing efficient donor-acceptor dye systems, the electronic structure and optical properties of pyran-squaraine as donor-acceptor dyes used in dye-sensitized solar cells were investigated. Ground state properties have been computed at the B3LYP/6-31+G**level of theory. The long-range corrected density functionals CAM-B3LYP, PBEPBE, PBE1PBE (PBE0), and TPSSH with 6-311++G**were employed to examine absorption properties of the studied dyes. In an extensive comparison between experimental results and ab initio benchmark calculations, the TPSSH functional with 6-311++G**basis set was found to be the most appropriate in describing the electronic properties for the studied pyran and squaraine dyes. Natural transition orbitals (NTO), frontier molecular orbitals (FMO), LUMO, HOMO, and energy gaps, of these dyes, have been analyzed to show their effect on the process of electron injection and dye regeneration. Interaction between HOMO and LUMO of pyran and squaraine dyes was investigated to understand the recombination process and charge-transfer process involving these dyes. Additionally, we performed natural bond orbital (NBO) analysis to investigate the role of charge delocalization and hyperconjugative interactions in the stability of the molecule.

scholarly journals Unsymmetrical Heptamethine Dyes for NIR Dye-Sensitized Solar Cells

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Thomas Geiger ◽  
Iuliia Schoger ◽  
Daniel Rentsch ◽  
Anna Christina Véron ◽  
Frédéric Oswald ◽  
...  
Keyword(s):  
Molecular Structure ◽  
Solar Cells ◽  
Solar Cell ◽  
Near Infrared ◽  
Photophysical Properties ◽  
Dye Sensitized Solar Cells ◽  
Dye Sensitized ◽  
Sensitized Solar Cells ◽  
Nir Dye ◽  
Proof Of Principle

Seven unsymmetrical heptamethine dyes with carboxylic acid functionality were synthesized and characterized. These near-infrared dyes exhibit outstanding photophysical properties depending on their heterocyclic moieties and molecular structure. As proof of principle, the dyes were used as photosensitizers in dye-sensitized solar cells. Using the most promising dye, an overall conversion efficiency of 1.22% and an almost colorless solar cell were achieved.

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