研究生: |
江仁詳 Jiang, Ren-Siang |
---|---|
論文名稱: |
以ZrTiOx為介電層並利用相消效應實現高效能MIM電容 |
指導教授: | 巫勇賢 |
口試委員: |
吳永俊
鄭淳護 |
學位類別: |
碩士 Master |
系所名稱: |
原子科學院 - 工程與系統科學系 Department of Engineering and System Science |
論文出版年: | 2013 |
畢業學年度: | 102 |
語文別: | 中文 |
論文頁數: | 90 |
中文關鍵詞: | ZrTiOx介電層 、MIM電容 、BaZryTi1-yO3介電層 |
相關次數: | 點閱:73 下載:0 |
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在第一個實驗(第三章)我們將介紹以ZrLaOx/ZrTiOx/ZrLaOx堆疊介電層作為金屬-絕緣層-金屬(Metal-Insulator-Metal, MIM)電容其中的ZrTiOx介電層經氮電漿處理60秒,跟未經氮電漿處理的ZrLaOx/ZrTiOx/ZrLaOx當作介電層的電容比較,這個MIM的電容密度稍微減少到14.38 fF/μm2以及VCC-α稍微劣化至68 ppm/V2,但仍然符合ITRS 2024的需求。不過,經過氮電漿處理後的漏電因子大幅度改善為32.8。此外,經加壓產生的漏電(SILC)在電壓為2.5伏特1000秒的條件下為0.16以及頻率幾乎不隨電容密度而改變。更重要的是,在相同的加壓條件下,有很好的電容變化可靠度在10年操作後為0.38%。
在第二個實驗(第四章),我們將介紹以鈣鈦礦為基底部分結晶的材料BaZryTi1-yO3 (y=0.6),發現這材料的κ值高達48.6以及有正的VCC-α值。堆疊BaZryTi1-yO3以及ZrTiOx當作介電層,這個MIM電容經由相消效應可達到極低的VCC-α值為14 ppm/V2以及電容密度值13.4 fF/μm2,很低的介電消散角度(loss tangent)低於0.01,很低的漏電流值7.5X10-9 A/cm2在-1V的條件下。固定電壓2.5伏持續1000秒,劣化的漏電流大小少於30%被量測到。此外,有極好電容變化可靠度在10年操作後為0.89%
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