Please use this identifier to cite or link to this item:
http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/25009
Title: | 氮化鋁鎵/氮化鎵高電子遷移率場效電晶體之製作與特性研究 Fabrication and Characterization of AlGaN/GaN High Electron Mobility Field Effect Transistor |
Authors: | Yin-Shuan Chin 金胤軒 |
Advisor: | 彭隆瀚 |
Keyword: | 氮化鋁鎵/氮化鎵高電子遷移率場效電晶體,歐姆接觸,歐姆掘入, AlGaN/GaN HEMT,Ohmic contact,Ohmic digging, |
Publication Year : | 2007 |
Degree: | 碩士 |
Abstract: | 中文摘要
本研究參考傳統歐姆接觸製程,設計元件的歐姆接觸,並利用環形傳輸線模型(Circular transmission line model,CTLM),蒸鍍金屬鈦/鋁/鈦/金(30 nm/120 nm/30 nm/150 nm),在800度30秒的熱退火條件下,製作出0.47 Ω-mm的歐姆接觸電阻值;並發展歐姆掘入製程,即在歐姆接觸金屬之製作前,先使用蝕刻法,移去淺層歐姆接觸區域之氮化鋁鎵,期望得到增強的歐姆接觸特性。我們使用原子力顯微鏡(Atomic force microscope, AFM)與X射線光電子能譜儀(X-ray photoelectron spectroscopy, XPS),分析歐姆掘入製程完成的樣品表面狀態,並量測得其歐姆接觸電阻值為從0.47 Ω-mm降低至0.31 Ω-mm,然而片電阻的變化也從385 Ω/sq增加到489 Ω/sq。 本研究繼而將歐姆掘入製程整合進入氮化鋁鎵/氮化鎵高電子遷移率場效電晶體製程中,並針對整合前後的差異,以閘極長度與寬度為2 Abstract We investigate methods of improving the electric properties of AlGaN/GaN field effect transistor (FET). An ohmic contact resistance of 0.47 |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/25009 |
Fulltext Rights: | 未授權 |
Appears in Collections: | 光電工程學研究所 |
Files in This Item:
File | Size | Format | |
---|---|---|---|
ntu-96-1.pdf Restricted Access | 3.99 MB | Adobe PDF |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.