研究生: |
邱垂章 Chui-Zhang Qiu |
---|---|
論文名稱: |
X光掠角小角度散射法研究退火時間對離子束合成鉬矽化物顆粒大小與表面電阻的影響 Grazing Incidence Small-Angle X-ray Scattering Study the Particle Size and Resistance of Mo Ion Implantation on Si(100) Wafer After Annealing |
指導教授: |
李志浩
Chih-Hao Lee |
口試委員: | |
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: | 2002 |
畢業學年度: | 90 |
語文別: | 中文 |
論文頁數: | 69 |
中文關鍵詞: | 掠角小角度散射,二矽化鉬,顆粒大小,離子佈植 |
外文關鍵詞: | GISAXS, molybdenum di-silicide, particle size, ion implantation |
相關次數: | 點閱:3 下載:0 |
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利用X光掠角小角度散射法,觀察鉬離子佈植在Si(100)晶圓,經過800 □C不同時間的退火,所形成的鉬矽化物顆粒大小成長情形,以及表面電阻的變化。在退火初期,由於晶體缺陷的減少,表面電阻有下降的趨勢;經過一段退火時間,則因為MoSi2晶粒的成長,使得晶粒間的距離變大,表面電阻因而上升。
MoSi2晶粒的成長和退火時間呈線性關係,由於Mo為難熔金屬(refractory metal),其活化能>2.5 eV,較一般近貴重金屬(near noble metal, 活化能1.5 eV)高,晶體的成長速度主要受到介面間的反應所控制。
Grazing incidence small angle X-ray scattering (GISAXS) and X-ray diffraction technique were used to probe the particle size and distribution of MoSi2 in a Mo ion implanted Si(100) wafer under 800 ºC after different annealing time. The sheet resistance of the sample decreases at beginning of annealing due to the recovery of defects and then increases due to the growth of larger and separated particles. The particle size of MoSi2 grows linearly proportional to the annealing time is due to interfacial reaction controlled growth kinetics.
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