Effect of the length of the alkyl chains in porphyrin meso-substituents on the performance of dye-sensitized solar cells

Xue, Xiaodong; Zhang, Weihong; Zhang, Nuonuo; Ju, Chenggong; Peng, Xiao; Yang, Yanbo; Liang, Yu-Xia; Feng, Yaqing; Zhang, Bao

doi:10.1039/c3ra46212a

Cited by 23 publications

(8 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Photo-excitation of Por at 280 nm leads to two PL bands between 570 and 700 nm, which were assigned to the radiative decay from S 1 to the ground state S 0 . Such a spectrum is characteristic of a Zn porphyrin chromophore reported in the literature [ 27 , 28 ]. The emission from CbTPA being excited at 280 nm is seen in the wavelength range 420–700 nm.…”

Section: Resultsmentioning

confidence: 80%

Effect of the second chromophore energy gap on photo-induced electron injection in di-chromophoric porphyrin-sensitized solar cells

Zhao

2018

R. Soc. open sci.

View full text Add to dashboard Cite

This work investigates the effect of the second chromophore energy gap on charge generation in porphyrin-based di-chromophoric dye-sensitized solar cells (DSSCs). Three di-chromophoric porphyrin dyes (PorY, PorO and PorR) containing three organic chromophores with decreasing frontier orbital energy offsets, including a carbazole-triphenylamine chromophore (yellow, Y), a carbazole fused-thiophene chromophore (orange, O) or a carbazole-thiophene benzothiadiazole thiophene chromophore (red, R), were investigated using optical and electrochemical methods, steady-state photoluminescence and photovoltaic device characterization. Energy transfer from the organic chromophore to the porphyrin was suggested in PorY and PorO as the main charge generation mechanism in DSSCs using these di-chromophoric dyes. On the other hand, electron transfer from the photo-excited porphyrin to the organic chromophore as a competing pathway leading to the loss of photocurrent is suggested for PorR-sensitized solar cells. The latter pathway leading to a loss of photocurrent is due to the lower lying lowest unoccupied molecular orbital of the additional organic chromophore (R) and suggests the limitation of the current di-chromophoric approach to increase the overall efficiency of DSSCs.

show abstract

Section: Resultsmentioning

confidence: 80%

Effect of the second chromophore energy gap on photo-induced electron injection in di-chromophoric porphyrin-sensitized solar cells

Zhao

2018

R. Soc. open sci.

View full text Add to dashboard Cite

show abstract

“…The longer the terminating alkyl chain and the higher the number of these chains, the higher is the PCE of the DSSC (Scheme ) . This favorable effect is caused by suppressing reduction of a charge mediating species by electrons from the CB of the MO.…”

Section: Functional Design Of Porphyrins For Dye‐sensitized Solar Cellsmentioning

confidence: 99%

Evolution of Molecular Design of Porphyrin Chromophores for Photovoltaic Materials of Superior Light‐to‐Electricity Conversion Efficiency

2017

View full text Add to dashboard Cite

Zinc porphyrins (ZnPs) attract high interest as efficient chromophores for dye-sensitized solar cells (DSSCs). Progress in the molecular design and solar cell materials led to a record of 13% power conversion efficiency of porphyrin-sensitized solar cells. Until recently, ZnPs were limitedly used in bulk-heterojunction solar cells (BHJ SC). However, application of porphyrin chromophores designed for DSSCs to BHJ SCs has rapidly increased the efficiency of the latter with both small-molecule and polymer ZnP donors. Herein, we briefly review the developmental history of molecular design of ZnPs for DSSCs, and illustrate the influence of this development on the design of small-molecule and polymer ZnP donors for BHJ SCs.

show abstract

“…In addition to central substituents, peripheral substituents at various locations around the ring, including four meso and eight β-positions, can also impart different properties to a greater or lesser extent to the molecule [56][57][58]. Xie et al have introduced various numbers of triphenylamine and trimethoxyphenyl groups to the meso-positions as electron donors, in an attempt to systematically tune the highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) energy levels [59].…”

Section: Phthalocyanines and Some Current Applicationsmentioning

confidence: 99%

Porphyrin‐Based Organophotocatalysts

Chen¹,

Huang²,

Wang³

2017

Phthalocyanines and Some Current Applications

View full text Add to dashboard Cite

The planar geometric structure and the rich absorption feature endow porphyrins with interesting optoelectronic properties and also make it promising building blocks for supramolecular assembly. Recent advances in the photocatalytic applications of porphyrins, including homogeneous, heterogeneous photocatalysis, and photoelectrochemical solar cells are highlighted. Porphyrin photocatalysts are involved in the form of molecules, supported molecules, nanostructures, and thin film. Related rational design strategies are provided for each form with an aim to enhance the light conversion efficiency. Finally, the ongoing directions and challenges for the future development of porphyrin semiconductors in high-quality optoelectronic devices are also proposed.

show abstract

Effect of the length of the alkyl chains in porphyrin meso-substituents on the performance of dye-sensitized solar cells

Cited by 23 publications

References 60 publications

Effect of the second chromophore energy gap on photo-induced electron injection in di-chromophoric porphyrin-sensitized solar cells

Effect of the second chromophore energy gap on photo-induced electron injection in di-chromophoric porphyrin-sensitized solar cells

Evolution of Molecular Design of Porphyrin Chromophores for Photovoltaic Materials of Superior Light‐to‐Electricity Conversion Efficiency

Porphyrin‐Based Organophotocatalysts

Contact Info

Product

Resources

About