Organic Dyes Incorporating the Dithieno[3, 2‐f:2′, 3′‐h]quinoxaline Moiety for Dye‐Sensitized Solar Cells. Issue 17 (8th April 2015)

• Record Type: Journal Article
• Authors: Ni, Jen‐Shyang; Kao, Wei‐Siang; Chou, Hao‐Ju; Lin, Jiann T.
• Is Part Of: ChemSusChem. Volume 8:Issue 17(2015:Sep.)
• Page Start: 2932
• Page End: 2939
• Publication Date: 2015-04-08
• Subjects: Green chemistry -- Periodicals; Sustainable engineering -- Periodicals; Chemistry -- Periodicals; Chemical engineering -- Periodicals; 660
• DOI: 10.1002/cssc.201500193
• Languages: English
• ISSNs: 1864-5631

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>New donor–acceptor′–acceptor‐type sensitizers (QBT dyes), comprising arylamine as the electron donor, dithieno[3, 2‐<italic>f</italic>:2′, 3′‐<italic>h</italic>]quinoxaline as the internal acceptor, and 2‐cyanoacrylic acid as both the acceptor and anchor, have been synthesized. The QBT dyes have broad absorption spectra covering the range of <italic>λ</italic>=368–487 nm with a highest molar extinction coefficient of up to approximately 40 000 <sc>M</sc>⁻¹ cm⁻¹. The light‐to‐electricity conversion efficiencies of the dye‐sensitized solar cells (DSSCs) fabricated from the dyes range from 6.11 to 7.59 % under simulated AM 1.5 G illumination. Upon addition of a threefold concentration of chenodeoxycholic acid as the co‐adsorbent, the best performance cell has a power‐conversion efficiency of 8.41 %, which is higher than that of the N719‐based standard DSSC (8.27 %).</p> </abstract>