Synthesis and photovoltaic properties of D-A copolymers based on alkylthio-thiophene or alkylthio-selenophene-BDT donor unit and DPP acceptor unit
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- 作者：Kun Wanga ; Wenyan Sua ; Xia Guoa ; guoxia@suda.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Maojie Zhanga ; mjzhang@suda.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Yongfang Lia ; b ; liyf@iccas.ac.cn" class="auth_mail" title="E-mail the corresponding author ; liyongfang@suda.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Polymer solar cells ; 2D-conjugated polymers ; Alkylthio substituent ; Benzodithiophene ; DPP-based D-A copolymers
- 刊名：Organic Electronics
- 出版年：2016
- 出版时间：June 2016
- 年：2016
- 卷：33
- 期：Complete
- 页码：15-22
- 全文大小：2348 K
文摘
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Two 2D-conjugated D-A copolymers, class="boldFont">PBDTT-S-DPP and class="boldFont">PBDTSe-S-DPP with alkylthio substituent, were synthesized.
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The side chain engineering plays important roles in affecting the absorption and HOMO energy levels of the polymers.
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The PSCs based on class="boldFont">PBDTT-S-DPP as donor and PC71BM as acceptor demonstrate PCE of 5.62% with relatively higher Voc of 0.79 V.