具有電子予體-電子受體-電子予體單體結構之低能隙咔唑系共聚高分子之合成及其在有機高分子太陽能電池之應用

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

100115808

專利證號

I 458750

專利獲證名稱

具有電子予體-電子受體-電子予體單體結構之低能隙咔唑系共聚高分子之合成及其在有機高分子太陽能電池之應用

專利所屬機關 (申請機關)

國立成功大學

獲證日期

2014/11/01

技術說明

我們利用Suzuki、 Yamamoto和Stille聚合反應，合成一系列低能隙咔唑共聚高分子，其含有拉電子基團作為側鏈。它們的能隙和分子能階可以經由與不同的電子予體(donor)共聚來調整，此一系列的共聚物具有較低的光學和電化學能隙，其光學能隙的範圍從1.79伏特到1.24伏特。高分子太陽能電池元件的結構為: ITO/PEDOT:PSS/copolymers:PCBM /Al，而太陽光模擬器的強度為AM1.5G、100 mW/cm2。此一系列低能隙咔唑共聚高分子的能量轉換效率已經被測量，其最佳的能量轉換效率 為1.27％，其開路電壓（Voc）為0.65 V和短路電流（Jsc）為6.69 mA/cm2。 We have synthesized a new series of low bandgap carbazole copolymers containing an electron-withdrawing moiety as a side chain, via Suzuki, Yamamoto, and Stille polymerization reactions. The resulting copolymers have low optical and electrochemical bandgaps. The optical bandgaps of the copolymers range from 1.79 eV to 1.24 eV. In order to investigate their photovoltaic properties, polymer solar cell devices based on low bandgap copolymers were fabricated with a structure of ITO/PEDOT: PSS/copolymers:PCBM/Al, under the illumination of AM 1.5G, 100 mW/cm2. The power conversion efficiencies (PCE) of the polymer solar cells based on these low bandgap copolymers were measured. The best performance was obtained by using PC-CARB as the electron donor and 6.6-phenyl C71-butyric acid methyl ester (PC71BM) as the electron acceptor. The PCE of the solar cell based on PC-CARB/ P71CBM (1:4) was 1.27 % with an open-circuit voltage (Voc) of 0.65 V, and a short-circuit current (Jsc) of 6.69 mA/cm2.

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