標題: Panchromatic co-sensitization of porphyrin-sensitized solar cells to harvest near-infrared light beyond 900 nm
作者: 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
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
公開日期: 1-Jan-2015
摘要: We designed a dimeric porphyrin dye (LDD1) based on an efficient push-pull zinc porphyrin (LD14) with extended pi-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 nmto 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.
URI: http://dx.doi.org/10.1039/c4ta06589a
http://hdl.handle.net/11536/124043
ISSN: 2050-7488
DOI: 10.1039/c4ta06589a
期刊: JOURNAL OF MATERIALS CHEMISTRY A
起始頁: 1417
結束頁: 1420
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