研究生: |
何俊德 Ho, Chun-Te |
---|---|
論文名稱: |
以溶液方式合成之銅摻雜四氧化三鈷作為光伏元件之吸收層 Solution-processed Cu-doped Co3O4 as an Absorption Layer for Photovoltaics |
指導教授: |
游萃蓉
Yew, Tri-Rung |
口試委員: |
李紫原
林俊榮 |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 材料科學工程學系 Materials Science and Engineering |
論文出版年: | 2012 |
畢業學年度: | 100 |
語文別: | 中文 |
論文頁數: | 155 |
中文關鍵詞: | 銅摻雜四氧化三鈷 、奈米結構 |
外文關鍵詞: | Cu-doped Co3O4, nanostructure |
相關次數: | 點閱:1 下載:0 |
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本研究利用溶液製程,成長穩定性好、對環境無害、且可大面積製作之新穎Cu-doped Co3O4奈米棒、奈米顆粒與奈米粒薄膜,並以此氧化物材料試製成新穎氧化物異質介面太陽能電池,驗證Cu-doped Co3O4運用於太陽能電池吸收層之可行性。
本研究亦針對不同摻雜濃度之Cu-doped Co3O4奈米棒於X光繞射、穿透式電子顯微鏡、以及拉曼光譜儀分析,確認已成功合成Cu-doped Co3O4奈米棒,且為多晶結構,藉由X-ray 光電子能譜儀分析化學成分確認銅摻雜進入Co3O4,以及利用感應耦合電漿質譜儀做銅定量分析;在光學性質方面,利用紫外/可見光吸收光譜、陰極激發放光系統分析可知隨著調變銅的摻雜量,增加吸收率與其吸收係數。且由不同的銅摻雜量,可在1.3 - 1.4 eV以及2.55 - 3.5 eV之間調變其能隙。驗證出Cu-doped Co3O4奈米棒為一相當具有潛力的光吸收媒介。此外,藉由調整不同參數成長Cu-doped Co3O4奈米粒薄膜,並以霍爾效應量測系統分析電性。得到最佳之載子濃度為1015 - 1016 cm-3,載子遷移率為1 - 10 cm2 / (V•s)。
本研究也製備出p-Cu-doped Co3O4奈米粒薄膜 / n-ZnSe薄膜異質接面太陽能電池,其太陽能電池電性表現為Voc = 0.14 V、Jsc = 0.65 mA/cm2、FF = 27 %、η = 0.028 %,其中短路電流密度較噴塗n-TiO2,及熱壓方式製作之電流上升數百倍。由上述結果可知Cu-doped Co3O4為一新穎之氧化物吸收層材料,且具有應用於太陽能電池之潛力。
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