利用釕錯合物提升電流密度之P3HT/PCBM可撓式太陽能電池之研製

本論文利用旋轉塗佈(Spin-coating)方式，製作P3HT與PCBM為主的混合式異質接面(bulk heterojunction，BHJ)結構有機太陽能電池。為了提升元件效率，本篇論文以添加微量釕錯合物至太陽能電池主動層中，增加元件對光的吸收。研究中，釕錯合物有效提升元件於可見光範圍之吸收率，使得更多光激子產生，進而提升元件的電流密度(current density)。本研究中主動層材料為poly(3-hexylthiophene)(P3HT)及phenyl-C61-butyric acid methyl ester (PCBM)，另外添加釕錯合物D719。元件結構如下：Substrate/ITO/PEDOT:PSS/P3HT:PCBM:D719/Al；其中PEDOT:PSS為電洞傳輸層、P3HT為電荷施體(Donor)材料和PCBM為電荷受體(Acceptor)材料。實驗結果顯示添加D719之主動層，製作於玻璃基板、PI及PET塑膠基板上的元件，其轉換效率分別可達到4.36%、3.68%及2.38%，相較於主動層未添加D719所製作的元件，其短路電流密度(Jsc)分別從3.61 mA/cm2、3.18 mA/cm2及2.14 mA/cm2提升至3.96 mA/cm2、3.56 mA/cm2及2.18 mA/cm2。最後，本研究摻雜金奈米粒子(Gold Nano-particle, GNP)於主動層，以增加電子於主動層激子分離界面的傳輸，進而提升短路電流。摻雜GNP之元件，其效率分別可達4.76%、4.65%及3.21%。

關鍵字

可撓式；有機太陽能電池；釕錯合物； P3HT ； PCBM ； PI塑膠； PET塑膠

並列摘要

In this work, we fabricated P3HT/PCBM polymer solar cells based on bulk hetero- junction structure by spin coating method. In order to improvement the power conversion efficiency (PCE) of organic solar cells, Ruthenium compound (D719) was added to active layer. When D719 added to cells, it had more absorbed wavelengths range to obtain a higher current density. We have prepared polymer solar cells incorporating an active layer of P3HT: PCBM blended with D719. The structure is Glass/ITO/PEDOT:PSS/P3HT:PCBM: D719/Al, in which poly(3-hexylthiophene) (P3HT) as electron donor, and phenyl- C61-butyric acid methyl ester (PCBM) as electron acceptor. PEDOT:PSS was used as a buffer layer between ITO and P3HT/PCBM, it plays an important role such as transporting holes efficiently. The experimental results indicated the bulk heterojunction organic solar cells by active layer blended with D719 on glass substrate, PI substrate and PET substrate, showed the PCE of 4.36%, 3.68% and 2.38%, respectively. When D719 added to cells, the device current density was increased from 3.61mA/cm2, 3.18mA/cm2 and 2.14mA/cm2 to 3.96mA/cm2, 3.56mA/cm2 and 2.18mA/cm2 , respectively. Eventually, in our study the active layer blended with gold nanoparticles to increases the current density of organic solar cells. The best photovoltaic properties were obtained about PCE of 4.76%, 4.65% and 3.21%.

並列關鍵字

Flexible ； Organic Solar cell ； Polymer ； Ruthenium compound ； P3HT ； PCBM ； PI substrate ； PET substrate

參考文獻

[28]潘漢昌,精儀中心簡訊63期(2004) 。

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利用釕錯合物提升電流密度之P3HT/PCBM可撓式太陽能電池之研製

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