Enhancing the Energy‐Conversion Efficiency of Solid‐State Dye‐Sensitized Solar Cells with a Charge‐Transfer Complex based on 2,3‐Dichloro‐5,6‐dicyano‐1,4‐benzoquinone
Abstract:As a champion hole‐transporting material (HTM), 2,2′7,7′‐tetrakis‐(N,N‐di‐p‐methoxyphenylamine)‐9,9′‐spirobifluorene (Spiro‐OMeTAD) has been widely used in solid‐state dye‐sensitized solar cells (ssDSCs). Owing to the low conductivity of Spiro‐OMeTAD, a chemical doping strategy is commonly used to enhance its hole‐transporting properties. In this study, we report a strong electron acceptor, 2,3‐dichloro‐5,6‐dicyano‐1,4‐benzoquinone (DDQ) as an additive for Spiro‐OMeTAD along with its application in ssDSCs. We … Show more
“…37 As the charge-transfer complex is generated, it would leave holes in spiro-OMeTAD and increase the electrical conductivity as well as hole mobility of nal HTL in devices for better photovoltaic performance. 41 Therefore, the doping mechanism may be described as follows:…”
“…37 As the charge-transfer complex is generated, it would leave holes in spiro-OMeTAD and increase the electrical conductivity as well as hole mobility of nal HTL in devices for better photovoltaic performance. 41 Therefore, the doping mechanism may be described as follows:…”
Dye-sensitized solar cells (DSCs) are celebrating their 30th birthday and they are attracting a wealth of research efforts aimed at unleashing their full potential. Righteous font designed by Astigmatic and licensed under the Open Font License.
“…The most recent work on p-dopants in ssDSCs was published by Sun and coworkers, who studied the effects on spiro-OMeTAD of 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), another oxidant widely used in organic synthesis. 298 The most notable result of their work is that only a very tiny 0.04% DDQ addition to spiro-OMeTAD was required to maximize solar cell efficiency. Conductivity of the oxidized HTM film increased from 5.31 Â 10 À5 to 2.22 Â 10 À4 S cm À1 and the device efficiency was boosted from 3.50 to 6.37%.…”
Section: Dopants For Hole Transporting Materialsmentioning
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