GaN Grown on Sputtered AlN/Mo/Sc<sub>0.2</sub>Al<sub>0.8</sub>N Composite Structure with Different Mo Thickness

نویسندگان

چکیده

é‡‡ç”¨è„‰å†²ç›´æµç£æŽ§æº å°„æ³•åœ¨Si(100)衬底上制备了AlN/Mo/Sc0.2Al0.8N复合结构薄膜,在该结构上通过金属有机化学气相沉积(MOCVD)技术进行GaN薄膜的外延。使用原子力显微镜、高分辨X射线衍射、粉末Xå°„çº¿è¡å°„ã€æ‰«æç”µå­æ˜¾å¾®é•œå’Œæ‹‰æ›¼å ‰è°±ç ”ç©¶äº†Moæ’å ¥å±‚çš„åŽšåº¦å¯¹Sc0.2Al0.8N缓冲层和GaNå¤–å»¶å±‚æ™¶ä½“è´¨é‡çš„å½±å“ï¼Œç ”ç©¶äº†Sc0.2Al0.8N缓冲层对Mo上生长的GaNå¤–å»¶å±‚çš„å½±å“ã€‚ç ”ç©¶ç»“æžœè¡¨æ˜Žï¼ŒMoæ’å ¥å±‚çš„åŽšåº¦æ˜¯å½±å“Sc0.2Al0.8N缓冲层和GaNå¤–å»¶å±‚çš„é‡è¦å› ç´ ï¼ŒSc0.2Al0.8N缓冲层对Mo上GaNæ™¶ä½“è´¨é‡çš„æé«˜å ·æœ‰é‡è¦æ„ä¹‰ã€‚éšMoåŽšåº¦çš„å¢žåŠ ï¼ŒSc0.2Al0.8Nç¼“å†²å±‚çš„è¡¨é¢ç²—ç³™åº¦å ˆå‡å°åŽå¢žå¤§ï¼ŒGaN外延层的(002)面Xå°„çº¿è¡å°„æ‘‡æ‘†æ›²çº¿åŠå³°å ¨å®½å ˆå‡å°åŽå¢žå¤§ã€‚å½“Moæ’å ¥å±‚åŽšåº¦ä¸º400 nm时,GaN外延层的晶体质量最好,GaN(002)面的Xå°„çº¿è¡å°„æ‘‡æ‘†æ›²çº¿åŠå³°å ¨å®½ä¸º0.51Â°ï¼Œç”±æ‹‰æ›¼å ‰è°±è®¡ç®—å¾—åˆ°çš„åŽ‹åº”åŠ›483.09 MPa;直接在Mo上进行GaN的外延,GaN(002)面的Xå°„çº¿è¡å°„æ‘‡æ‘†æ›²çº¿åŠå³°å ¨å®½æ— æ³•æµ‹å¾—ï¼Œè¯´æ˜Žåœ¨Mo上进行GaN的外延需要Sc0.2Al0.8N缓冲层。

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Structure of thin SiO2 films grown on Mo„112..

Ultra-thin SiO2 films were prepared by evaporating Si onto a Mo~112! surface followed by oxidation and annealing up to 1200 K. The surface structure and film quality were investigated by low-energy electron diffraction ~LEED!, Auger spectroscopy ~AES!, and high-resolution electron energy loss spectroscopy ~HREELS!. A well-ordered, monolayer Mo(112)-c(232)-SiO2 structure was characterized by HRE...

متن کامل

Titanium oxide films grown on Mo(110)

Ordered titanium oxide films were prepared on an Mo(110) substrate under ultrahigh vacuum conditions and characterized by various vacuum surface analytical techniques. Using different preparation methods, the titanium oxide films exhibit two low-energy electron diffraction patterns: a (1×1) rectangular pattern and a (1×1) hexagonal pattern. Auger electron spectroscopy, high-resolution electron ...

متن کامل

GaN avalanche photodiodes grown on m-plane freestanding GaN substrate

M-plane GaN avalanche p-i-n photodiodes on low dislocation density freestanding m-plane GaN substrates were realized using metal-organic chemical vapor deposition. High quality homoepitaxial m-plane GaN layers were developed; the root-mean-square surface roughness was less than 1 Å and the full-width-at-half-maximum value of the x-ray rocking curve for 101̄0 diffraction of m-plane GaN epilayer w...

متن کامل

HVPE Growth on MOVPE-Grown Semipolar (112̄2) GaN 75 HVPE Growth on MOVPE-Grown Semipolar (112̄2) GaN

For the GaN material system, one reason for the breaking down of the efficiency is the socalled quantum confined Stark effect (QCSE). Since today’s LEDs are grown in the common [0001] (c-)direction, the internal polarization fields are perpendicular to the quantum wells. The cause of these internal fields are spontaneous and piezoelectric polarization. The reason for the latter is mechanical st...

متن کامل

Influence of conductive network composite thickness and structure on performance of ionic polymer-metal composite transducer

The important role of the nanostructure of conductive network composite (CNC) layers on the performance of ionic polymer-metal composite (IPMC) transducer has been discussed detailedly. IPMC transducers exhibit both electromechanical and mechanoelectrical behaviors. When subjected to an external electric field, electromechanical behavior of IPMC transducers causes an actuation response which ca...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Chinese Journal of Luminescence

سال: 2023

ISSN: ['1000-7032']

DOI: https://doi.org/10.37188/cjl.20220406