{"id":692,"date":"2021-04-07T08:06:52","date_gmt":"2021-04-07T01:06:52","guid":{"rendered":"https:\/\/materials-lab.hcmus.edu.vn\/?p=692"},"modified":"2023-04-28T23:49:34","modified_gmt":"2023-04-28T16:49:34","slug":"bao-cao-nghiem-thu-de-tai-vnu-b-6-02-2021","status":"publish","type":"post","link":"https:\/\/materials-lab.hcmus.edu.vn\/?p=692","title":{"rendered":"B\u00e1o c\u00e1o nghi\u1ec7m thu \u0111\u1ec1 t\u00e0i VNU-B [6\/04\/2021]"},"content":{"rendered":"\n

Ng\u00e0y 06\/04\/2021 t\u1ea1i Ph\u00f2ng h\u1ecdp I.12 tr\u01b0\u1eddng \u0110H Khoa h\u1ecdc T\u1ef1 nhi\u00ean, \u0110HQG-HCM, PGS. TS. Tr\u1ea7n Cao Vinh \u0111\u00e3 b\u00e1o c\u00e1o nghi\u1ec7m thu \u0111\u1ec1 t\u00e0i c\u1ea5p \u0110HQG, v\u1edbi t\u00ean \u0111\u1ec1 t\u00e0i ” Nghi\u00ean c\u1ee9u vai tr\u00f2 c\u1ee7a hy\u0111r\u00f4 trong vi\u1ec7c t\u0103ng \u0111\u1ed9 linh \u0111\u1ed9ng \u0111i\u1ec7n t\u1eed trong c\u00e1c m\u00e0ng m\u1ecfng \u00f4x\u00edt k\u1ebdm pha t\u1ea1p nh\u00f4m v\u00e0 pha t\u1ea1p gali \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng ph\u01b0\u01a1ng ph\u00e1p ph\u00fan x\u1ea1 magnetron<\/strong>“.
<\/strong><\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n\n\n

T\u00f3m t\u1eaft n\u1ed9i dung \u0111\u1ec1 t\u00e0i<\/h1>\n

Trong nghi\u00ean c\u1ee9u n\u00e0y, b\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch quang ph\u1ed5 v\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e2n t\u00edch kh\u00e1c, \u1ea3nh h\u01b0\u1edfng c\u1ee7a hy\u0111r\u00f4 l\u00ean t\u00ednh ch\u1ea5t quang, \u0111i\u1ec7n v\u00e0 c\u1ea5u tr\u00fac c\u1ee7a m\u00e0ng HGZO v\u00e0 HAZO \u0111\u01b0\u1ee3c c\u1ee7ng c\u1ed1 v\u00e0 l\u00e0m r\u00f5, trong \u0111\u00f3 n\u1ed5i b\u1eadt l\u00ean b\u1ed1n t\u00e1c \u0111\u1ed9ng ch\u00ednh c\u1ee7a hy\u0111r\u00f4:<\/p>\n

    \n
  • H\u1ed7 tr\u1ee3 Ga3+<\/sup> \/Al3+<\/sup> thay th\u1ebf v\u00e0o c\u00e1c v\u1ecb tr\u00ed Zn2+<\/sup> t\u0103ng n\u1ed3ng \u0111\u1ed9 Ga\/Al \u0111\u00f4no hi\u1ec7u d\u1ee5ng (t\u0103ng n\u1ed3ng \u0111\u1ed9 h\u1ea1t t\u1ea3i), \u0111\u1ed3ng th\u1eddi gi\u1ea3m c\u00e1c t\u00e2m t\u00e1n x\u1ea1 Ga3+<\/sup>\/Al3+<\/sup> xen k\u1ebd (t\u0103ng \u0111\u1ed9 linh \u0111\u1ed9ng \u0111i\u1ec7n t\u1eed)<\/li>\n
  • Chi\u1ebfm gi\u1eef c\u00e1c n\u00fat khuy\u1ebft VO<\/sub> g\u00f3p ph\u1ea7n gi\u1ea3m c\u00e1c t\u00e2m t\u00e1n x\u1ea1, \u0111\u1ed3ng th\u1eddi h\u00ecnh th\u00e0nh c\u00e1c \u0111\u00f4no n\u00f4ng HO<\/sub> \u0111\u00f3ng g\u00f3p h\u1ea1t t\u1ea3i cho v\u00f9ng d\u1eabn.<\/li>\n
  • Th\u1ee5 \u0111\u1ed9ng h\u00f3a c\u00e1c khuy\u1ebft VZn<\/sub> gi\u1ea3m c\u00e1c t\u00e2m t\u00e1n x\u1ea1, t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 linh \u0111\u1ed9ng \u0111i\u1ec7n t\u1eed.<\/li>\n
  • Th\u1ee5 \u0111\u1ed9ng h\u00f3a c\u00e1c li\u00ean k\u1ebft \u0111\u1ee9t g\u00e3y t\u1eadp trung nhi\u1ec1u \u1edf b\u1ec1 m\u1eb7t m\u00e0ng v\u00e0 c\u00e1c bi\u00ean h\u1ea1t gi\u1ea3m c\u00e1c t\u00e2m t\u00e1n x\u1ea1 \u0111i\u1ec7n t\u1eed.<\/li>\n<\/ul>\n

    Vai tr\u00f2 c\u1ee7a hy\u0111r\u00f4 ph\u1ea7n l\u1edbn l\u00e0 th\u1ee5 \u0111\u1ed9ng h\u00f3a, li\u00ean k\u1ebft l\u00e0m gi\u1ea3m c\u00e1c lo\u1ea1i sai h\u1ecfng nh\u01b0 VO<\/sub>, VZn<\/sub>, dangling bonds. M\u1eb7t kh\u00e1c, hy\u0111r\u00f4 c\u0169ng c\u00f3 th\u1ec3 l\u00e0m gia t\u0103ng m\u1ed9t ph\u1ea7n n\u1ed3ng \u0111\u1ed9 sai h\u1ecfng Zni<\/sub> do qu\u00e1 tr\u00ecnh \u201cetching\u201d. Tuy nhi\u00ean, ch\u00ednh s\u1ef1 th\u1ee5 \u0111\u1ed9ng h\u00f3a c\u00e1c lo\u1ea1i sai h\u1ecfng c\u00f2n l\u1ea1i, hy\u0111r\u00f4 g\u00f3p ph\u1ea7n \u0111\u1ed3ng b\u1ed9 h\u00f3a c\u00e1c lo\u1ea1i sai h\u1ecfng (Vo v\u00e0 Zni\u00ad<\/sub> l\u00e0 lo\u1ea1i sai h\u1ecfng ch\u1ee7 y\u1ebfu), l\u00e0m gi\u1ea3m s\u1ed1 l\u01b0\u1ee3ng c\u00e1c lo\u1ea1i sai h\u1ecfng trong c\u1ea5u tr\u00fac tinh th\u1ec3, c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u0103ng \u0111\u1ed9 linh \u0111\u1ed9ng \u0111i\u1ec7n t\u1eed c\u1ee7a m\u00e0ng.<\/p>\n

    Ch\u00fang t\u00f4i \u0111\u00e3 ch\u1ebf t\u1ea1o th\u00e0nh c\u00f4ng v\u1eadt li\u1ec7u m\u00e0ng m\u1ecfng HAZO v\u00e0 HGZO c\u00f3 \u0111\u1ed9 linh \u0111\u1ed9ng \u0111i\u1ec7n t\u1eed cao v\u1edbi gi\u00e1 tr\u1ecb t\u01b0\u01a1ng \u1ee9ng l\u00e0 60.5 cm2<\/sup>\/Vs v\u00e0 54.5 cm2<\/sup>\/Vs, c\u00f9ng v\u1edbi gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf su\u1ea5t t\u01b0\u01a1ng \u1ee9ng l\u00e0 5.2\u00b410-4<\/sup> \u03a9cm v\u00e0 4.5\u00b410-4<\/sup> \u03a9cm. \u0110\u1ed9 truy\u1ec1n qua trung b\u00ecnh trong v\u00f9ng kh\u1ea3 ki\u1ebfn v\u00e0 h\u1ed3ng ngo\u1ea1i g\u1ea7n \u0111\u1ec1u l\u1edbn h\u01a1n 82%. Do \u0111\u00f3, c\u00e1c m\u00e0ng m\u1ecfng n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng l\u00e0m \u0111i\u1ec7n c\u1ef1c trong c\u00e1c thi\u1ebft b\u1ecb quang \u2013 \u0111i\u1ec7n t\u1eed gi\u00fap t\u0103ng hi\u1ec7u su\u1ea5t thi\u1ebft b\u1ecb.<\/p>\n

    Nh\u1eefng k\u1ebft qu\u1ea3 tr\u00ean gi\u00fap \u0111\u1ec1 t\u00e0i n\u00e0y \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c nh\u1eefng s\u1ea3n ph\u1ea9m c\u00f4ng b\u1ed1 v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi thuy\u1ebft minh \u0111\u00e3 \u0111\u0103ng k\u00ed ban \u0111\u1ea7u (g\u1ed3m 02 b\u00e0i b\u00e1o SCI x\u1ebfp h\u1ea1ng Q1 v\u00e0 Q2 v\u1edbi \u0111i\u1ec3m IF l\u1ea7n l\u01b0\u1ee3t 2.4 v\u00e0 1.7, 02 b\u00e0i b\u00e1o \u0111\u0103ng t\u1ea1p ch\u00ed trong n\u01b0\u1edbc v\u00e0 03 b\u00e0i b\u00e1o \u0111\u0103ng trong k\u1ef7 y\u1ebfu h\u1ed9i ngh\u1ecb<\/em>), c\u1ee5 th\u1ec3:<\/p>\n

      \n
    • 04 b\u00e0i b\u00e1o SCIE g\u1ed3m 03 b\u00e0i b\u00e1o x\u1ebfp h\u1ea1ng Q1 v\u00e0 01 b\u00e0i b\u00e1o x\u1ebfp h\u1ea1ng Q2.<\/li>\n
    • 01 c\u00f4ng b\u1ed1 \u0111\u0103ng tr\u00ean t\u1ea1p ch\u00ed trong n\u01b0\u1edbc v\u00e0 03 b\u00e0i b\u00e1o \u0111\u0103ng tr\u00ean k\u00fd y\u1ebfu h\u1ed9i ngh\u1ecb.<\/li>\n<\/ul>\n

      V\u1ec1 m\u1eb7t \u0111\u00e0o t\u1ea1o, th\u00f4ng qua \u0111\u1ec1 t\u00e0i n\u00e0y n\u00e0y ch\u00fang t\u00f4i \u0111\u00e3 ho\u00e0n th\u00e0nh m\u1ee5c ti\u00eau \u0111\u00e0o t\u1ea1o v\u1edbi vi\u1ec7c \u0111\u00e0o t\u1ea1o th\u00e0nh c\u00f4ng 02<\/strong> Th\u1ea1c s\u1ef9 v\u00e0 03<\/strong> Sinh vi\u00ean.<\/p>\n","protected":false},"excerpt":{"rendered":"

      Ng\u00e0y 06\/04\/2021 t\u1ea1i Ph\u00f2ng h\u1ecdp I.12 tr\u01b0\u1eddng \u0110H Khoa h\u1ecdc T\u1ef1 nhi\u00ean, \u0110HQG-HCM, PGS. TS. Tr\u1ea7n<\/p>\n","protected":false},"author":1,"featured_media":694,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"_links":{"self":[{"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/692"}],"collection":[{"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=692"}],"version-history":[{"count":5,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/692\/revisions"}],"predecessor-version":[{"id":838,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/692\/revisions\/838"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=\/wp\/v2\/media\/694"}],"wp:attachment":[{"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/materials-lab.hcmus.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}