scholarly journals Determinants of the efficiency of photon upconversion by triplet–triplet annihilation in the solid state: zinc porphyrin derivatives in PVA

2017 ◽  
Vol 19 (34) ◽  
pp. 23471-23482 ◽  
Author(s):  
Ranjana Rautela ◽  
Neeraj K. Joshi ◽  
Sacha Novakovic ◽  
Wallace W. H. Wong ◽  
Jonathan M. White ◽  
...  
Keyword(s):  
Solid State ◽  
Zinc Porphyrin ◽  
Porphyrin Derivatives ◽  
Zinc Porphyrins ◽  
Triplet Triplet Annihilation

Differences in efficiencies of photon upconversion are explained for a series of alkyl-substituted diphenyl and tetraphenyl zinc porphyrins.

Structural Requirements of Zinc Porphyrin Derivatives on the Complex-Forming with Light-Harvesting Polypeptides

2000 ◽  
Vol 29 (2) ◽  
pp. 158-159 ◽  
Author(s):  
Ayumi Kashiwada ◽  
Hiroyuki Watanabe ◽  
Toshihisa Mizuno ◽  
Kouji Iida ◽  
Tomohiro Miyatake ◽  
...  
Keyword(s):  
Light Harvesting ◽  
Structural Requirements ◽  
Zinc Porphyrin ◽  
Porphyrin Derivatives

Synthesis of donor-π-acceptor porphyrins for DSSC: DFT-study, comparison of anchoring mode and effectiveness

2020 ◽  
Vol 24 (04) ◽  
pp. 538-547
Author(s):  
Artem V. Ezhov ◽  
Fedor Yu. Vyal’ba ◽  
Kseniya A. Zhdanova ◽  
Andrey P. Zhdanov ◽  
Konstantin Yu. Zhizhin ◽  
...  
Keyword(s):  
Density Functional ◽  
Molecular Design ◽  
Isonicotinic Acid ◽  
Photovoltaic Properties ◽  
Zinc Porphyrin ◽  
Porphyrin Derivatives ◽  
Titanium Dioxide Surface ◽  
The Density Functional Theory ◽  
Phenyl Rings ◽  
Anchoring Groups

In this study two pairs of novel zinc-porphyrin complexes (ZnP1 ZnP2 ZnP3 and ZnP4) were synthesized as sensitizers for DSSC and their photophysical, computational studies and photovoltaic properties were investigated. Structures of proposed dyes are based on a molecular design that relies on donor/[Formula: see text]-bridge/acceptor interactions. Compounds differ by anchoring mode to the titanium dioxide surface: ZnP2 and ZnP4 porphyrins possess carboxyl anchoring groups while ZnP1 and ZnP3 porphyrins have similar structure but without anchors and attached to the surface by isonicotinic acid ligands. All the zinc-porphyrin derivatives bear hexyloxy-chains at the para-positions of their phenyl rings and ZnP3 and ZnP4 contain 1,3,5-triazine fragments as efficient electron transfer bridges. Electron density distribution of the frontier molecular orbitals was calculated based on the density functional theory (DFT). The test DSSC was manufactured and its parameters were measured to compare the effectiveness of the proposed sensitizers. Our results reveal that dyes with an anchoring group directly in their structure demonstrated several times higher efficiency. The use of the triazine fragment proved effective for the introduction of acceptor substituents bearing anchor groups. As a result, the highest efficiency of 4.33% was achieved using the dye ZnP4.

scholarly journals Enhanced sub-bandgap efficiency of a solid-state organic intermediate band solar cell using triplet–triplet annihilation

2017 ◽  
Vol 10 (6) ◽  
pp. 1465-1475 ◽  
Author(s):  
YunHui L. Lin ◽  
Marius Koch ◽  
Alyssa N. Brigeman ◽  
David M. E. Freeman ◽  
Lianfeng Zhao ◽  
...  
Keyword(s):  
Solar Cell ◽  
Solid State ◽  
Intermediate Band ◽  
Intermediate Band Solar Cell ◽  
Triplet Triplet Annihilation

A novel solid-state design is presented for an organic intermediate band solar cell with electrically integrated triplet–triplet annihilation upconversion.

Novel D-π-A system based on zinc-porphyrin derivatives for highly efficient dye-sensitised solar cells

2011 ◽  
Vol 52 (30) ◽  
pp. 3879-3882 ◽  
Author(s):  
Myung Jun Lee ◽  
Kang Deuk Seo ◽  
Hae Min Song ◽  
Min Soo Kang ◽  
Yu Kyung Eom ◽  
...  
Keyword(s):  
Solar Cells ◽  
Zinc Porphyrin ◽  
Highly Efficient ◽  
Porphyrin Derivatives
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