Controlling aggregation using self-assembled axially coordinated pyridine-based ligands on porphyrin analogues for dye-sensitized solar cells

Bakhytzhan Baptayev, Sang Hee Lee, Dong Hee Kim, Mannix Balanay

Research output: Contribution to journalArticle

Abstract

Porphyrin dyes are susceptible to aggregation which may cause lower short-circuit current density affecting its photoelectric conversion efficiency (PCE) in dye-sensitized solar cells. In this paper, we harness the inherent property of metallated porphyrins that it can axially coordinate with compounds containing lone-pair of electrons, such as pyridines, through the back π-bonding. The use of pyridine or bipyridine spacers to suppress aggregation in β-functionalized Zn-tetraphenylporphyrin-based dyes showed improvement of PCEs by 28% and 44% for 4-methylpyridine and 4,4′-bipyridine ligands, respectively. This clearly demonstrates the benefits of the simple but effective method in suppressing dye aggregation thereby increasing its efficiency.

Original languageEnglish
Pages (from-to)407-410
Number of pages4
JournalChemical Physics Letters
Volume730
DOIs
Publication statusPublished - Sep 1 2019

Fingerprint

Porphyrins
porphyrins
pyridines
Coloring Agents
Agglomeration
solar cells
dyes
analogs
Ligands
ligands
Pyridines
harnesses
Short circuit currents
Conversion efficiency
Current density
short circuit currents
spacers
Electrons
current density
pyridine

Keywords

  • Density functional theory
  • Dye-sensitized solar cell
  • Zinc-tetraphenylporphyrin

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Controlling aggregation using self-assembled axially coordinated pyridine-based ligands on porphyrin analogues for dye-sensitized solar cells. / Baptayev, Bakhytzhan; Lee, Sang Hee; Kim, Dong Hee; Balanay, Mannix.

In: Chemical Physics Letters, Vol. 730, 01.09.2019, p. 407-410.

Research output: Contribution to journalArticle

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