Panchromatic co-sensitization of porphyrin-sensitized solar cells to harvest near-infrared light beyond 900 nm

Jia Wei Shiu, Yen Cheng Chang, Chien Yi Chan, Hui Ping Wu, Hung Yu Hsu, Chin Li Wang, Ching Yao Lin*, Wei-Guang Diau

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

63 Scopus citations

Abstract

We designed a dimeric porphyrin dye (LDD1) based on an efficient push-pull zinc porphyrin (LD14) with extended π-conjugation through coupling of two zinc porphine cores via an acetylene bridge at the meso position of the porphyrin to extend the absorption spectrum effectively into the near infrared region. The effect of dye aggregation among porphyrin molecules was significantly suppressed when the LDD1 and LD14 dyes were co-sensitized on a nanocrystalline TiO2 film in a dye-sensitized photovoltaic system. The light-harvesting ability of the device exhibits a panchromatic feature covering a broad spectral region from 400 nm to 900 nm, which results in a short-circuit current density of 21.3 mA cm-2 and a power conversion efficiency of 10.4% in an iodine-based solar cell. This journal is

Original languageEnglish
Pages (from-to)1417-1420
Number of pages4
JournalJournal of Materials Chemistry A
Volume3
Issue number4
DOIs
StatePublished - 28 Jan 2015

Fingerprint Dive into the research topics of 'Panchromatic co-sensitization of porphyrin-sensitized solar cells to harvest near-infrared light beyond 900 nm'. Together they form a unique fingerprint.

Cite this