{"id":27699,"date":"2020-03-15T17:10:00","date_gmt":"2020-03-15T10:10:00","guid":{"rendered":"https:\/\/ttud.com.vn\/?p=27699"},"modified":"2021-11-22T08:51:46","modified_gmt":"2021-11-22T01:51:46","slug":"nghien-cuu-che-tao-mang-mong-nbtio2tno-cho-cua-so-thong-minh-cach-nhiet-bang-phan-xa-tia-hong-ngoai","status":"publish","type":"post","link":"https:\/\/casta.ttud.com.vn\/index.php\/nghien-cuu-che-tao-mang-mong-nbtio2tno-cho-cua-so-thong-minh-cach-nhiet-bang-phan-xa-tia-hong-ngoai\/","title":{"rendered":"Nghi\u00ean c\u1ee9u ch\u1ebf t\u1ea1o m\u00e0ng m\u1ecfng Nb:TiO2(TNO) cho c\u1eeda s\u1ed5 th\u00f4ng minh: c\u00e1ch nhi\u1ec7t b\u1eb1ng ph\u1ea3n x\u1ea1 tia h\u1ed3ng ngo\u1ea1i"},"content":{"rendered":"\n

Vi\u1ec7c ch\u1ebf t\u1ea1o ra k\u00ednh c\u00e1ch nhi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng nhi\u1ec7m v\u1ee5 b\u1ee9c thi\u1ebft c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc tr\u00ean th\u1ebf gi\u1edbi c\u0169ng nh\u01b0 \u1edf Vi\u1ec7t Nam. \u0110\u1ec3 ch\u1ebf t\u1ea1o c\u1eeda s\u1ed5 c\u00e1ch nhi\u1ec7t, hi\u1ec7n nay c\u00f3 hai c\u00e1ch l\u00e0 d\u00f9ng k\u00ednh d\u1ea1ng h\u1ed9p c\u00f3 \u0111\u1ec7m kh\u00f4ng kh\u00ed ho\u1eb7c kh\u00ed tr\u01a1 \u1edf gi\u1eefa, ho\u1eb7c d\u00f9ng l\u1edbp c\u00e1ch nhi\u1ec7t c\u00f3 ch\u1ec9 s\u1ed1 b\u1ee9c x\u1ea1 th\u1ea5p nh\u01b0 t\u1ed5 h\u1ee3p m\u00e0ng \u0111i\u1ec7n m\u00f4i\/kim lo\u1ea1i\/\u0111i\u1ec7n m\u00f4i v\u1edbi nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau, ho\u1eb7c k\u1ebft h\u1ee3p c\u1ea3 hai c\u00e1ch tr\u00ean \u0111\u1ec3 t\u0103ng th\u00eam hi\u1ec7u qu\u1ea3 c\u00e1ch nhi\u1ec7t. Kh\u00f3 kh\u0103n c\u1ee7a vi\u1ec7c ch\u1ebf t\u1ea1o n\u00e0y l\u00e0 kh\u00e1 ph\u1ee9c t\u1ea1p v\u1edbi nhi\u1ec1u quy tr\u00ecnh v\u00e0 nh\u1ea5t l\u00e0 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ed9 m\u1ecfng c\u1ee7a l\u1edbp kim lo\u1ea1i \u0111\u1ec3 cho ph\u00e9p \u00e1nh s\u00e1ng v\u00f9ng th\u1ea5y \u0111\u01b0\u1ee3c \u0111i qua. N\u0103m 2005, nh\u00f3m nghi\u00ean c\u1ee9u c\u1ee7a gi\u00e1o s\u01b0 Hasegawa l\u1ea7n \u0111\u1ea7u ti\u00ean c\u00f4ng b\u1ed1 t\u00ednh trong su\u1ed1t d\u1eabn \u0111i\u1ec7n c\u1ee7a epitaxy TNO \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o b\u1eb1ng k\u1ef9 thu\u1eadt PLD. Sau \u0111\u00f3 l\u00e0 n\u1ed7 l\u1ef1c c\u1ee7a nh\u00f3m nghi\u00ean c\u1ee9u Hasegawa v\u00e0 c\u00e1c nh\u00f3m nghi\u00ean c\u1ee9u kh\u00e1c \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh trong su\u1ed1t d\u1eabn \u0111i\u1ec7n c\u1ee7a TNO b\u1eb1ng k\u1ef9 thu\u1eadt PLD v\u00e0 k\u1ef9 thu\u1eadt ph\u00fan x\u1ea1 \u0111\u1ec3 c\u00f3 th\u1ec3 \u0111\u01b0a TNO v\u00e0o \u00e1p d\u1ee5ng trong th\u1ef1c t\u1ebf.<\/p>\n\n\n\n

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

C\u00e1c b\u00e1o c\u00e1o g\u1ea7n \u0111\u00e2y cho th\u1ea5y TNO v\u1eabn \u0111\u1ea1t t\u00ednh trong su\u1ed1t d\u1eabn \u0111i\u1ec7n cao ngay c\u1ea3 khi \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o tr\u00ean n\u1ec1n k\u00ednh v\u00e0 \u0111\u1ea1t n\u1ed3ng \u0111\u1ed9 electron ne~ 1021 cm-3. Granqvist \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng \u0111\u1ed1i v\u1edbi tr\u01b0\u1eddng h\u1ee3p ITO, t\u1ea7n s\u1ed1 dao \u0111\u1ed9ng plasmon s\u1ebd gi\u1ea3m n\u1ebfu ne t\u0103ng t\u1eeb 1020 \u0111\u1ebfn 1021 cm-3, c\u00f3 ngh\u0129a r\u1eb1ng v\u1edbi n\u1ed3ng \u0111\u1ed9 electron cao, m\u00e0ng m\u1ecfng s\u1ebd c\u00f3 kh\u1ea3 n\u0103ng ph\u1ea3n x\u1ea1 tia h\u1ed3ng ngo\u1ea1i. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y TNO c\u00f3 ti\u1ec1m n\u0103ng l\u00e0 ch\u1ea5t c\u00f3 ch\u1ec9 s\u1ed1 b\u1ee9c x\u1ea1 th\u1ea5p v\u00ec c\u00f3 th\u1ec3 ph\u1ea3n x\u1ea1 l\u1ea1i tia h\u1ed3ng ngo\u1ea1i. M\u1ed9t s\u1ed1 nghi\u00ean c\u1ee9u v\u1ec1 ch\u1ec9 s\u1ed1 b\u1ee9c x\u1ea1 c\u1ee7a ITO v\u00e0 AZO c\u0169ng \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh. V\u1edbi ti\u1ec1m n\u0103ng c\u00f3 ch\u1ec9 s\u1ed1 b\u1ee9c x\u1ea1 th\u1ea5p, v\u1edbi quy tr\u00ecnh ch\u1ebf t\u1ea1o \u0111\u01a1n gi\u1ea3n, h\u01a1n n\u1eefa TiO2 l\u1ea1i l\u00e0 ch\u1ea5t c\u00f3 kh\u1ea3 n\u0103ng t\u1ef1 l\u00e0m s\u1ea1ch, b\u1ec1n trong kh\u00f4ng kh\u00ed v\u00e0 c\u00e1c m\u00f4i tr\u01b0\u1eddng axit, gi\u00e1 th\u00e0nh th\u1ea5p, m\u00e0ng TNO h\u1ee9a h\u1eb9n kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng v\u00e0o c\u00e1c c\u1eeda s\u1ed5 th\u00f4ng minh \u0111\u1ec3 ch\u1ed1ng n\u00f3ng v\u00e0 ch\u1ed1ng b\u1ee5i. V\u1edbi nh\u1eefng tri\u1ec3n v\u1ecdng n\u00e0y, nh\u00f3m nghi\u00ean c\u1ee9u do TS. Ho\u00e0ng Ng\u1ecdc Lam H\u01b0\u01a1ng<\/em><\/strong>, Trung t\u00e2m Nano v\u00e0 N\u0103ng l\u01b0\u1ee3ng, \u0110HKHTN l\u00e0m ch\u1ee7 nhi\u1ec7m \u0111\u00e3 th\u1ef1c hi\u1ec7n \u0111\u1ec1 t\u00e0i: \u201cNghi\u00ean c\u1ee9u ch\u1ebf t\u1ea1o m\u00e0ng m\u1ecfng Nb:TiO2(TNO) cho c\u1eeda s\u1ed5 th\u00f4ng minh: c\u00e1ch nhi\u1ec7t b\u1eb1ng ph\u1ea3n x\u1ea1 tia h\u1ed3ng ngo\u1ea1i<\/em><\/strong>\u201d.<\/p>\n\n\n\n

Sau m\u1ed9t th\u1eddi gian tri\u1ec3n khai nghi\u00ean c\u1ee9u (t\u1eeb th\u00e1ng 4 n\u0103m 2013 \u0111\u1ebfn th\u00e1ng 4 n\u0103m 2017), nh\u00f3m \u0111\u1ec1 t\u00e0i \u0111\u00e3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c k\u1ebft qu\u1ea3 nh\u01b0 sau:<\/p>\n\n\n\n

Nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 ch\u1ebf t\u1ea1o v\u00e0 \u0111\u00e1nh gi\u00e1 kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng c\u1ee7a m\u00e0ng TNO v\u00e0o c\u1eeda s\u1ed5 th\u00f4ng minh, c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u00f3ng. Sau khi t\u1ed1i \u01b0u h\u00f3a \u0111i\u1ec1u ki\u1ec7n ch\u1ebf t\u1ea1o, m\u00e0ng \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u00f3ng kho\u1ea3ng 24%. So s\u00e1nh v\u1edbi c\u00e1c v\u1eadt li\u1ec7u ph\u1ee7 l\u00ean k\u00ednh ch\u1ed1ng n\u00f3ng hi\u1ec7n nay, m\u00e0ng TNO c\u00f3 quy tr\u00ecnh ch\u1ebf t\u1ea1o \u0111\u01a1n gi\u1ea3n, ch\u1ec9 m\u1ed9t l\u1edbp v\u1eadt li\u1ec7u, gi\u00e1 th\u00e0nh th\u1ea5p, kh\u00f4ng \u0111\u1ed9c, c\u00f3 kh\u1ea3 n\u0103ng t\u1ef1 l\u00e0m s\u1ea1ch. Tuy hi\u1ec7u su\u1ea5t ch\u1ed1ng n\u00f3ng ch\u01b0a qu\u00e1 cao, nh\u01b0ng v\u1edbi nh\u1eefng \u01b0u th\u1ebf v\u1ec1 v\u1eadt li\u1ec7u, m\u00e0ng TNO h\u1ee9a h\u1eb9n s\u1ebd \u1ee9ng d\u1ee5ng t\u1ed1t cho c\u1eeda s\u1ed5 k\u00ednh. <\/p>\n\n\n\n

C\u00e1c v\u1eadt li\u1ec7u trong su\u1ed1t d\u1eabn \u0111i\u1ec7n mang t\u00ednh ch\u1ea5t ph\u1ea3n x\u1ea1 h\u1ed3ng ngo\u1ea1i, \u0111i\u1ec3n h\u00ecnh nh\u01b0 ITO, AZO, FTO. TNO l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u trong su\u1ed1t d\u1eabn \u0111i\u1ec7n m\u1edbi \u0111\u01b0\u1ee3c ph\u00e1t hi\u1ec7n trong kho\u1ea3ng 10 n\u0103m tr\u1edf l\u1ea1i \u0111\u00e2y. V\u00e0 TiO2 mang c\u00e1c t\u00ednh ch\u1ea5t m\u00e0 nh\u1eefng v\u1eadt li\u1ec7u ch\u1ee7 kh\u00e1c kh\u00f4ng c\u00f3, nh\u01b0 l\u00e0 h\u1ec7 s\u1ed1 kh\u00fac x\u1ea1 cao, \u0111\u1ed9 b\u1ec1n h\u00f3a h\u1ecdc cao, h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i l\u1edbn, quang h\u00f3a. TNO c\u0169ng c\u00f3 m\u1ed9t s\u1ed1 l\u1ee3i th\u1ebf, nh\u01b0 l\u00e0 gi\u00e1 th\u00e0nh th\u1ea5p, d\u1ec5 ch\u1ebf t\u1ea1o, b\u1ec1n h\u00f3a h\u1ecdc, kh\u1ea3 n\u0103ng t\u1ef1 l\u00e0m s\u1ea1ch. M\u00e0ng TNO c\u1ee7a nh\u00f3m nghi\u00ean c\u1ee9u c\u00f3 kh\u1ea3 n\u0103ng gi\u00fap ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng l\u00e0m m\u00e1t l\u00ean \u0111\u1ebfn 24%. K\u1ebft qu\u1ea3 cho th\u1ea5y, m\u00e0ng c\u00f3 kh\u1ea3 n\u0103ng \u1ee9ng d\u1ee5ng v\u00e0o c\u1eeda s\u1ed5 k\u00ednh ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng, v\u1edbi m\u1ee5c \u0111\u00edch gi\u1ea3m thi\u1ec3u vi\u1ec7c nhi\u1ec7t \u0111\u1ed9 t\u0103ng cao trong nh\u00e0 do h\u1ea5p th\u1ee5 tia h\u1ed3ng ngo\u1ea1i nhi\u1ec7t.<\/p>\n\n\n\n

Nh\u01b0 v\u1eady, nh\u00f3m nghi\u00ean c\u1ee9u \u0111\u00e3 ho\u00e0n th\u00e0nh \u0111\u1ec1 t\u00e0i nghi\u00ean c\u1ee9u v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ea3n ph\u1ea9m l\u00e0 m\u00e0ng ch\u1ed1ng n\u00f3ng-ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng TiO2 pha t\u1ea1p Nb v\u1edbi kh\u1ea3 n\u0103ng ti\u1ebft ki\u1ec7m n\u0103ng l\u01b0\u1ee3ng l\u00ean \u0111\u1ebfn 25%. Nh\u00f3m nghi\u00ean c\u1ee9u mong \u0111\u01b0\u1ee3c t\u1ea1o \u0111i\u1ec1u ki\u1ec7n h\u01a1n n\u1eefa \u0111\u1ec3 ph\u00e1t tri\u1ec3n k\u1ebft qu\u1ea3 v\u00e0 s\u1ea3n ph\u1ea9m c\u1ee7a \u0111\u1ec1 t\u00e0i.<\/p>\n\n\n\n

C\u00f3 th\u1ec3 t\u00ecm \u0111\u1ecdc to\u00e0n v\u0103n B\u00e1o c\u00e1o k\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u c\u1ee7a \u0110\u1ec1 t\u00e0i (M\u00e3 s\u1ed1 14814\/2018) t\u1ea1i C\u1ee5c Th\u00f4ng tin Khoa h\u1ecdc v\u00e0 C\u00f4ng ngh\u1ec7 Qu\u1ed1c gia.<\/em><\/p>\n\n\n\n

P.T.T (NASATI)<\/em><\/p>\n\n\n\n

https:\/\/www.vista.gov.vn\/news\/khoa-hoc-ky-thuat-va-cong-nghe\/nghien-cuu-che-tao-mang-mong-nb-tio2-tno-cho-cua-so-thong-minh-cach-nhiet-bang-phan-xa-tia-hong-ngoai-328.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Vi\u1ec7c ch\u1ebf t\u1ea1o ra k\u00ednh c\u00e1ch nhi\u1ec7t l\u00e0 m\u1ed9t trong nh\u1eefng nhi\u1ec7m v\u1ee5 b\u1ee9c thi\u1ebft c\u1ee7a c\u00e1c nh\u00e0 khoa h\u1ecdc tr\u00ean th\u1ebf gi\u1edbi c\u0169ng nh\u01b0 \u1edf Vi\u1ec7t Nam. \u0110\u1ec3 ch\u1ebf t\u1ea1o c\u1eeda s\u1ed5 c\u00e1ch nhi\u1ec7t, hi\u1ec7n nay c\u00f3 hai c\u00e1ch l\u00e0 d\u00f9ng k\u00ednh d\u1ea1ng h\u1ed9p c\u00f3 \u0111\u1ec7m kh\u00f4ng kh\u00ed ho\u1eb7c kh\u00ed tr\u01a1 \u1edf gi\u1eefa, ho\u1eb7c […]<\/p>\n","protected":false},"author":25,"featured_media":29610,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[47],"tags":[],"class_list":["post-27699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc"],"_links":{"self":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/users\/25"}],"replies":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/comments?post=27699"}],"version-history":[{"count":3,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27699\/revisions"}],"predecessor-version":[{"id":30310,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/posts\/27699\/revisions\/30310"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media\/29610"}],"wp:attachment":[{"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/media?parent=27699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/categories?post=27699"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/casta.ttud.com.vn\/index.php\/wp-json\/wp\/v2\/tags?post=27699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}