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

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...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials chemistry. A, Materials for energy and sustainability Materials for energy and sustainability, 2015-01, Vol.3 (4), p.1417-1420
Main Authors: Shiu, Jia-Wei, Chang, Yen-Cheng, Chan, Chien-Yi, Wu, Hui-Ping, Hsu, Hung-Yu, Wang, Chin-Li, Lin, Ching-Yao, Diau, Eric Wei-Guang
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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 TiO 2 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.
ISSN:2050-7488
2050-7496
DOI:10.1039/C4TA06589A