研究生: |
郭宗琦 Zong-Ci Guo |
---|---|
論文名稱: |
利用自組裝單分子薄膜與銀奈米粒子改良
有機薄膜太陽能電池之效率 Improving the Efficiency of Organic Thin Film Solar cell by Self-Assembled Monolayer and Silver Nanoparticles |
指導教授: |
戴 龑
Yian Tai |
口試委員: |
陳貴賢
Kuei-Hsien Chen 林麗瓊 Li-Chyong Lin 劉進興 Chin-Hsin J. Liu 陳良益 Liang-Yih Chen |
學位類別: |
碩士 Master |
系所名稱: |
工程學院 - 化學工程系 Department of Chemical Engineering |
論文出版年: | 2008 |
畢業學年度: | 96 |
語文別: | 中文 |
論文頁數: | 116 |
中文關鍵詞: | 自組裝單分子層薄膜、有機薄膜太陽能電池、銀奈米粒子 |
外文關鍵詞: | Self assembled monolayer(SAM)、organic thin fi |
相關次數: | 點閱:326 下載:0 |
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本論文研究主要是以自組裝單分子層薄膜(Self assembled monolayer, SAM)修改(modify)有機薄膜太陽能電池之PN界面(P-N junction),藉由使用不同的SAM分子,探討其對PN界面載子復合(Carrier recombination)及對電池光電轉換效率之影響。吾人發現引入不同SAM分子,可減低界面之載子復合程度;但亦使元件PN界面產生不同大小的能障(energy barrier);產生能障越大,元件效率越低。因此,嘗試藉由引入銀奈米粒子(Silver nanoparticle, Ag-NPs)於單層分子薄膜表面,以降低PN界面之能障,並期利用奈米粒子之表面電漿效應(Surface plasmon effect),提高元件光電流。
藉由含硫醇、芳香族官能基的SAM分子結合銀奈米粒子可組成最佳之太陽能電池元件,其光電轉換效率可高於參考元件約3倍。
In this thesis, we modify the PN junction of organic thin film solar cell by passivating Self Assembled Monolayer (SAM) with different kinds of molecule, in order to study the behaviors of carrier recombination in PN junction and how the power conversion efficiency (PCE) of the cell would be affected. We find that the charge recombination could be reduced by incorporation of the SAM. However, the energy barrier between PN junction would be increased in addition, which affect the PCE, i.e. the higher the energy barrier at PN junction, the lower the PCE of the solarcell.
By intigrtation with silver nanoparticles (Ag-NPs) on SAM, the energy barrier between PN junction could be reduced. In addition, the short circuit current (Jsc) of the device would be increased by means of the surface plasmom resonace (SPR) enhancement effect.
We found that the efficiency of the solar cell could be increased maxium by incoperation the device with Ag-NPs which covalently anchored on a SAM with aromatic backbone. The power conversion efficiency is three times larger then the reference device.
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