Pyrazine-incorporating panchromatic sensitizers for dye sensitized solar cells under one sun and dim light

Mulu Berhe Desta, Nguyn Sơn Vinh, CH Pavan Kumar, Sumit Chaurasia, Wei Ti Wu, Jiann T. Lin*, Tzu Chien Wei, Wei-Guang Diau

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

New D-A′-π-A type (D = electron donor, A′ = auxiliary acceptor, π = π-conjugated bridge, and A = electron acceptor/anchor) sensitizers with two bis(alkoxy)phenyl substituents incorporating thieno[3,4-b]pyrazines (TP) or a benzo[3,4-b]pyrazine (BP) entity as the auxiliary acceptor have been synthesized for application in dye-sensitized solar cells (DSSCs). Under 1 sun illumination, the DSSCs fabricated from the two BP dyes with a co-adsorbent have efficiencies of 8.39% and 9.03%, respectively. The latter surpasses that of the standard N719 dye (8.87%). Under dim light conditions MD7 exhibited a power conversion efficiency of 18.95% and 27.17% under 300 lux and 6000 lux irradiance, respectively.

Original languageEnglish
Pages (from-to)13778-13789
Number of pages12
JournalJournal of Materials Chemistry A
Volume6
Issue number28
DOIs
StatePublished - 1 Jan 2018

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