Enhanced Photovoltaic Performances of Dye-Sensitized Solar Cells by Co-Sensitization of Benzothiadiazole and Squaraine-Based Dyes

Enhanced Photovoltaic Performances of Dye-Sensitized Solar Cells by Co-Sensitization of Benzothiadiazole and Squaraine-Based Dyes

Dye-sensitized solar cells (DSSCs) based on a donor–acceptor–donor oligothienylene dye containing benzothiadiazole (T4BTD-A) were cosensitized with dyes containing cis-configured squaraine rings (HSQ3 and HSQ4). The cosensitized dyes showed incident monochromatic photon-to-current conversion efficie...

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Veröffentlicht in:ACS applied materials & interfaces 2016-02, Vol.8 (7), p.4616-4623
Hauptverfasser: Islam, Ashraful, Akhtaruzzaman, Md, Chowdhury, Towhid H, Qin, Chuanjiang, Han, Liyuan, Bedja, Idriss M, Stalder, Romain, Schanze, Kirk S, Reynolds, John R
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container_end_page 4623
container_issue 7
container_start_page 4616
container_title ACS applied materials & interfaces
container_volume 8
creator Islam, Ashraful
Akhtaruzzaman, Md
Chowdhury, Towhid H
Qin, Chuanjiang
Han, Liyuan
Bedja, Idriss M
Stalder, Romain
Schanze, Kirk S
Reynolds, John R
description Dye-sensitized solar cells (DSSCs) based on a donor–acceptor–donor oligothienylene dye containing benzothiadiazole (T4BTD-A) were cosensitized with dyes containing cis-configured squaraine rings (HSQ3 and HSQ4). The cosensitized dyes showed incident monochromatic photon-to-current conversion efficiency (IPCE) greater than 70% in the 300–850 nm wavelength region. The individual overall conversion efficiencies of the sensitizers T4BTD-A, HSQ3, and HSQ4 were 6.4%, 4.8%, and 5.8%, respectively. Improved power conversion efficiencies of 7.0% and 7.7% were observed when T4BTD-A was cosensitized with HSQ3 and HSQ4, respectively, thanks to a significant increase in current density (J SC) for the cosensitized DSSCs. Intensity-modulated photovoltage spectroscopy results showed a longer lifetime for cosensitized T4BTD-A+HSQ3 and T4BTD-A+HSQ4 compared to that of HSQ3 and HSQ4, respectively.
doi_str_mv 10.1021/acsami.5b11134
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Mater. Interfaces</addtitle><date>2016-02-24</date><risdate>2016</risdate><volume>8</volume><issue>7</issue><spage>4616</spage><epage>4623</epage><pages>4616-4623</pages><issn>1944-8244</issn><eissn>1944-8252</eissn><abstract>Dye-sensitized solar cells (DSSCs) based on a donor–acceptor–donor oligothienylene dye containing benzothiadiazole (T4BTD-A) were cosensitized with dyes containing cis-configured squaraine rings (HSQ3 and HSQ4). The cosensitized dyes showed incident monochromatic photon-to-current conversion efficiency (IPCE) greater than 70% in the 300–850 nm wavelength region. The individual overall conversion efficiencies of the sensitizers T4BTD-A, HSQ3, and HSQ4 were 6.4%, 4.8%, and 5.8%, respectively. Improved power conversion efficiencies of 7.0% and 7.7% were observed when T4BTD-A was cosensitized with HSQ3 and HSQ4, respectively, thanks to a significant increase in current density (J SC) for the cosensitized DSSCs. Intensity-modulated photovoltage spectroscopy results showed a longer lifetime for cosensitized T4BTD-A+HSQ3 and T4BTD-A+HSQ4 compared to that of HSQ3 and HSQ4, respectively.</abstract><cop>United States</cop><pub>American Chemical Society</pub><pmid>26812212</pmid><doi>10.1021/acsami.5b11134</doi><tpages>8</tpages></addata></record>
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title Enhanced Photovoltaic Performances of Dye-Sensitized Solar Cells by Co-Sensitization of Benzothiadiazole and Squaraine-Based Dyes
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