頁籤選單縮合
題 名 | 水熱法合成氧化鋅奈米線及應用於檢測紫外光之性能=Preparation of ZnO Nanowires by a Hydrothermal Process and the Performance of Nanowire-based UV Photodetectors |
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作 者 | 曾世凱; 洪敏雄; 呂英治; | 書刊名 | International Journal of Science and Engineering |
卷 期 | 1:1 2011.04[民100.04] |
頁 次 | 頁11-15 |
分類號 | 448.533 |
關鍵詞 | 氧化鋅; 奈米線組裝; 紫外光感測器; ZnO; Nanowires; UV photodetectors; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究是藉由介電泳動 (dielectrophoresis) 之方式將適合於電極間距長度之奈米線跨接於金電極之上,以製作成氧化鋅/金的蕭基式接觸 (Schottky contact)。氧化鋅奈米線之長度可藉由在水熱法的合成過程中調整聚乙烯醇 (PVA) 的添加量加以控制。其原理是藉聚乙烯醇做為鋅離子之貯存裝置,並且在反應的過程中緩慢的釋放出鋅離子,藉以調控 Zn(OH)4[2-]在溶液中的過飽和程度,而獲得不同尺寸之氧化鋅一維結構。將組裝完成之光檢測器元件,利用波長為 365 nm光強度為 1.6 mW/cm2 之紫外光進行測試,反應時間 (response time) 約為 4秒,靈敏度(responsibility) 約 180 mA/W。 |
英文摘要 | In the present study, PVA is employed as structure-directing agent, and can control the concentration of Zn2+ in reaction solution. The sizes of the ZnO wires can be tuned easily by controlling the addition amount of PVA, due to the sufficient concentration of Zn2+ ions chelated by PVA releasing to the reaction solution in hydrothermal process. The ZnO wires were aligned onto Cr/Au electrodes by dielectrophoresis process for fabricating Schottky photodetector. The response time and responsibility were found to be 4 s and 180 mA/W measured under a UV light (λ: 365 nm) with a power density of 1.6 mW/cm2. |
本系統中英文摘要資訊取自各篇刊載內容。