Different metal upper porphyrin based self-assembly sensitizers for application in efficient dye-sensitized solar cells

Yu Wu, Jia Cheng Liu, Ren Zhi Li, Cheng Gang Ci

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

Four different metal atom dyes MP (M: Zn, Cd, Ag, Cu) as upper porphyrin molecular have been designed and synthesized. On the other side of ZnPA contains four carboxylic acids as the horizontal anchor porphyrin for binding to TiO2. We constructed MP-ZnPA assembled approach, and applied in dye-sensitized solar cells. Photoelectrochemical studies reveal the self-assembled structure dye photocurrent (Jsc) are higher than anchor porphyrin. The enhancement of Jsc can be ascribed to the improved light-harvesting ability induced by the axially coordinated MP. However, upper different metal atom porphyrins cannot play a positive role in improving the photovoltages (Voc) because of MP-ZnPA devices possess the dye aggregation. The effects of the MP-ZnPA assembled on the optical, theory calculations and photovoltaic properties were investigated. AgP-ZnPA and ZnP-ZnPA have the higher molar extinction coefficient and sufficient charge injection into the TiO2 conduction band. Therefore, AgP-ZnPA and ZnP-ZnPA have superior photovoltaic behavior. We constructed a three-layer self-assembled (ZnP1-AgP-ZnPA) solar cell, which the photovoltaic efficiency of the three-layer self-assembled solar cell is significantly reduced. Consequently, double-layer self-assembly, which is one of the effective strategies for improving the performance of self-assembly supramolecular solar cells.

Original languageEnglish
Article number115573
JournalPolyhedron
Volume211
DOIs
StatePublished - 1 Jan 2022

Keywords

  • Different metal
  • Dye-sensitized solar cells
  • Horizontal anchoring porphyrin
  • Self-assembly

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