{"id":2048,"date":"2026-03-06T05:30:18","date_gmt":"2026-03-06T05:30:18","guid":{"rendered":"https:\/\/www.fuyao-quartz.com\/?p=2048"},"modified":"2026-03-06T05:49:28","modified_gmt":"2026-03-06T05:49:28","slug":"tu-dong-soan-thao","status":"publish","type":"post","link":"https:\/\/www.fuyao-quartz.com\/vi\/auto-draft\/","title":{"rendered":"Th\u1ea1ch anh so v\u1edbi silicon: L\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u cho c\u00e1c \u1ee9ng d\u1ee5ng b\u00e1n d\u1eabn"},"content":{"rendered":"

Trong ng\u00e0nh c\u00f4ng nghi\u1ec7p b\u00e1n d\u1eabn, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t quy\u1ebft \u0111\u1ecbnh hi\u1ec7u su\u1ea5t, \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3 s\u1ea3n xu\u1ea5t c\u1ee7a thi\u1ebft b\u1ecb. Trong s\u1ed1 nhi\u1ec1u lo\u1ea1i v\u1eadt li\u1ec7u \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng, th\u1ea1ch anh (SiO\u2082) v\u00e0 silic (Si) \u0111\u00f3ng vai tr\u00f2 c\u01a1 b\u1ea3n nh\u01b0ng kh\u00e1c bi\u1ec7t. Vi\u1ec7c hi\u1ec3u r\u00f5 c\u00e1c t\u00ednh ch\u1ea5t, \u01b0u \u0111i\u1ec3m v\u00e0 h\u1ea1n ch\u1ebf c\u1ee7a ch\u00fang l\u00e0 \u0111i\u1ec1u thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c k\u1ef9 s\u01b0, nh\u00e0 nghi\u00ean c\u1ee9u v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t mong mu\u1ed1n t\u1ed1i \u01b0u h\u00f3a c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t b\u00e1n d\u1eabn.<\/p>\n\n\n\n

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

1. T\u1ed5ng quan v\u1ec1 th\u1ea1ch anh v\u00e0 silic<\/h2>\n\n\n\n

Th\u1ea1ch anh<\/strong> l\u00e0 m\u1ed9t d\u1ea1ng tinh th\u1ec3 c\u1ee7a oxit silic (SiO\u2082) \u0111\u01b0\u1ee3c bi\u1ebft \u0111\u1ebfn v\u1edbi \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc v\u01b0\u1ee3t tr\u1ed9i, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t cao v\u00e0 t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i tuy\u1ec7t v\u1eddi. Ch\u1ea5t li\u1ec7u n\u00e0y \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i trong thi\u1ebft b\u1ecb b\u00e1n d\u1eabn, bao g\u1ed3m \u1ed1ng th\u1ea1ch anh, c\u1eeda s\u1ed5, n\u1ed3i nung v\u00e0 ch\u1ea5t n\u1ec1n cho c\u00e1c quy tr\u00ecnh nhi\u1ec7t \u0111\u1ed9 cao. Kh\u1ea3 n\u0103ng ch\u1ecbu \u0111\u01b0\u1ee3c c\u00e1c chu k\u1ef3 nhi\u1ec7t c\u1ef1c \u0111oan m\u00e0 kh\u00f4ng b\u1ecb bi\u1ebfn d\u1ea1ng khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u kh\u00f4ng th\u1ec3 thi\u1ebfu trong c\u00e1c quy tr\u00ecnh nh\u01b0 l\u1eafng \u0111\u1ecdng h\u01a1i h\u00f3a h\u1ecdc (CVD) v\u00e0 nu\u00f4i c\u1ea5y tinh th\u1ec3.<\/p>\n\n\n\n

Silic<\/strong>, Ng\u01b0\u1ee3c l\u1ea1i, silicon l\u00e0 m\u1ed9t v\u1eadt li\u1ec7u b\u00e1n d\u1eabn c\u00f3 m\u1ea1ng tinh th\u1ec3 r\u00f5 r\u00e0ng, t\u1ea1o n\u00ean n\u1ec1n t\u1ea3ng c\u1ee7a ng\u00e0nh vi \u0111i\u1ec7n t\u1eed hi\u1ec7n \u0111\u1ea1i. C\u00e1c t\u1ea5m silicon \u0111\u00f3ng vai tr\u00f2 l\u00e0 ch\u1ea5t n\u1ec1n \u0111\u1ec3 ch\u1ebf t\u1ea1o c\u00e1c m\u1ea1ch t\u00edch h\u1ee3p (IC). C\u00e1c t\u00ednh ch\u1ea5t b\u00e1n d\u1eabn c\u1ee7a silicon cho ph\u00e9p ki\u1ec3m so\u00e1t ch\u00ednh x\u00e1c d\u00f2ng \u0111i\u1ec7n t\u1eed, t\u1eeb \u0111\u00f3 t\u1ea1o ra c\u00e1c b\u00f3ng b\u00e1n d\u1eabn, \u0111i\u1ed1t v\u00e0 c\u1ed5ng logic, l\u00e0 nh\u1eefng th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a ng\u00e0nh c\u00f4ng ngh\u1ec7 m\u00e1y t\u00ednh, truy\u1ec1n th\u00f4ng v\u00e0 \u0111i\u1ec7n t\u1eed ti\u00eau d\u00f9ng hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

2. T\u00ednh ch\u1ea5t nhi\u1ec7t v\u00e0 c\u01a1 h\u1ecdc<\/h2>\n\n\n\n

M\u1ed9t trong nh\u1eefng y\u1ebfu t\u1ed1 ch\u00ednh c\u1ea7n xem x\u00e9t khi l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u l\u00e0 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/strong>. Th\u1ea1ch anh c\u00f3 h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t c\u1ef1c th\u1ea5p, gi\u00fap v\u1eadt li\u1ec7u n\u00e0y c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng n\u1ee9t v\u1ee1 ho\u1eb7c bi\u1ebfn d\u1ea1ng r\u1ea5t t\u1ed1t trong c\u00e1c quy tr\u00ecnh gia c\u00f4ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao, ch\u1eb3ng h\u1ea1n nh\u01b0 qu\u00e1 tr\u00ecnh \u1ee7 wafer v\u00e0 l\u1eafng \u0111\u1ecdng m\u00e0ng m\u1ecfng. \u0110i\u1ec3m n\u00f3ng ch\u1ea3y c\u1ee7a th\u1ea1ch anh v\u01b0\u1ee3t qu\u00e1 1.600\u00b0C, cao h\u01a1n nhi\u1ec1u so v\u1edbi h\u1ea7u h\u1ebft c\u00e1c kim lo\u1ea1i \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft b\u1ecb ch\u1ebf t\u1ea1o b\u00e1n d\u1eabn.<\/p>\n\n\n\n

Silic c\u0169ng c\u00f3 t\u00ednh ch\u1ea5t nhi\u1ec7t tuy\u1ec7t v\u1eddi, v\u1edbi \u0111i\u1ec3m n\u00f3ng ch\u1ea3y kho\u1ea3ng 1.414\u00b0C, nh\u01b0ng v\u1ec1 m\u1eb7t c\u01a1 h\u1ecdc, n\u00f3 d\u1ec5 g\u00e3y h\u01a1n khi ch\u1ecbu l\u1ef1c \u1edf nhi\u1ec7t \u0111\u1ed9 cao. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i x\u1eed l\u00fd c\u1ea9n th\u1eadn trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 gia c\u00f4ng t\u1ea5m wafer. Do \u0111\u00f3, th\u1ea1ch anh \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng h\u01a1n trong c\u00e1c m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u00e1c b\u1ed9 ph\u1eadn b\u1ea3o v\u1ec7, trong khi silic v\u1eabn l\u00e0 v\u1eadt li\u1ec7u n\u1ec1n b\u00e1n d\u1eabn ch\u1ee9c n\u0103ng kh\u00f4ng th\u1ec3 thi\u1ebfu.<\/p>\n\n\n\n

3. Kh\u1ea3 n\u0103ng ch\u1ecbu h\u00f3a ch\u1ea5t v\u00e0 \u0111\u1ed9 tinh khi\u1ebft<\/h2>\n\n\n\n

T\u00ednh \u1ed5n \u0111\u1ecbnh h\u00f3a h\u1ecdc l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng kh\u00e1c. Th\u1ea1ch anh c\u00f3 kh\u1ea3 n\u0103ng ch\u1ed1ng ch\u1ecbu r\u1ea5t t\u1ed1t v\u1edbi h\u1ea7u h\u1ebft c\u00e1c lo\u1ea1i axit v\u00e0 kh\u00ed \u0103n m\u00f2n, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh v\u1eadt li\u1ec7u l\u00fd t\u01b0\u1edfng cho c\u00e1c \u1ee9ng d\u1ee5ng nh\u01b0 bu\u1ed3ng kh\u1eafc, \u1ed1ng x\u1eed l\u00fd v\u00e0 n\u1ed3i nung c\u00f3 \u0111\u1ed9 tinh khi\u1ebft cao. C\u00e1c t\u1ea1p ch\u1ea5t trong th\u1ea1ch anh c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 trong su\u1ed1t quang h\u1ecdc v\u00e0 t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i c\u1ee7a n\u00f3, do \u0111\u00f3, th\u1ea1ch anh lo\u1ea1i b\u00e1n d\u1eabn \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t v\u1edbi h\u00e0m l\u01b0\u1ee3ng t\u1ea1p ch\u1ea5t kim lo\u1ea1i c\u1ef1c th\u1ea5p.<\/p>\n\n\n\n

C\u00e1c t\u1ea5m silicon c\u0169ng ph\u1ea3i tu\u00e2n th\u1ee7 c\u00e1c ti\u00eau chu\u1ea9n v\u1ec1 \u0111\u1ed9 tinh khi\u1ebft nghi\u00eam ng\u1eb7t t\u01b0\u01a1ng t\u1ef1. Ngay c\u1ea3 nh\u1eefng t\u1ea1p ch\u1ea5t \u1edf m\u1ee9c r\u1ea5t nh\u1ecf, nh\u01b0 bo ho\u1eb7c ph\u1ed1t pho, c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao c\u00e1c t\u1ea5m silicon ph\u1ea3i tr\u1ea3i qua c\u00e1c quy tr\u00ecnh tinh ch\u1ebf v\u00e0 pha t\u1ea1p nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n t\u1eed mong mu\u1ed1n cho qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t m\u1ea1ch t\u00edch h\u1ee3p (IC).<\/p>\n\n\n\n

4. T\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i v\u00e0 quang h\u1ecdc<\/h2>\n\n\n\n

Th\u1ea1ch anh c\u00f3 \u0111\u1ed9 b\u1ec1n \u0111i\u1ec7n m\u00f4i v\u00e0 \u0111\u1ed9 trong su\u1ed1t quang h\u1ecdc tuy\u1ec7t v\u1eddi, nh\u1edd \u0111\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c thi\u1ebft b\u1ecb ti\u1ebfp x\u00fac v\u1edbi t\u00edn hi\u1ec7u t\u1ea7n s\u1ed1 cao ho\u1eb7c \u00e1nh s\u00e1ng c\u1ef1c t\u00edm (UV) v\u00e0 h\u1ed3ng ngo\u1ea1i (IR). V\u00ed d\u1ee5, c\u00e1c c\u1eeda s\u1ed5 th\u1ea1ch anh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft b\u1ecb quang kh\u1eafc v\u00e0 h\u1ec7 th\u1ed1ng l\u1eafng \u0111\u1ecdng h\u1ed7 tr\u1ee3 b\u1eb1ng laser \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o truy\u1ec1n d\u1eabn quang h\u1ecdc \u1ed5n \u0111\u1ecbnh m\u00e0 kh\u00f4ng g\u00e2y ra nhi\u1ec5u \u0111i\u1ec7n.<\/p>\n\n\n\n

C\u00e1c t\u00ednh ch\u1ea5t \u0111i\u1ec7n m\u00f4i c\u1ee7a silicon kh\u00f4ng qu\u00e1 quan tr\u1ecdng, v\u00ec vai tr\u00f2 ch\u00ednh c\u1ee7a n\u00f3 l\u00e0 d\u1eabn v\u00e0 \u0111i\u1ec1u khi\u1ec3n d\u00f2ng \u0111i\u1ec7n. Tuy nhi\u00ean, silicon c\u00f3 th\u1ec3 b\u1ecb oxy h\u00f3a \u0111\u1ec3 t\u1ea1o th\u00e0nh c\u00e1c l\u1edbp silicon dioxide (SiO\u2082), t\u1eeb \u0111\u00f3 k\u1ebft h\u1ee3p hi\u1ec7u qu\u1ea3 c\u00e1c t\u00ednh ch\u1ea5t b\u00e1n d\u1eabn v\u00e0 c\u00e1ch \u0111i\u1ec7n trong m\u1ed9t c\u1ea5u tr\u00fac t\u1ea5m wafer duy nh\u1ea5t. \u0110i\u1ec1u n\u00e0y l\u00e0 n\u1ec1n t\u1ea3ng c\u01a1 b\u1ea3n cho thi\u1ebft k\u1ebf MOSFET (b\u00f3ng b\u00e1n d\u1eabn hi\u1ec7u \u1ee9ng tr\u01b0\u1eddng kim lo\u1ea1i-\u00f4xit-b\u00e1n d\u1eabn) hi\u1ec7n \u0111\u1ea1i.<\/p>\n\n\n\n

5. \u1ee8ng d\u1ee5ng trong s\u1ea3n xu\u1ea5t ch\u1ea5t b\u00e1n d\u1eabn<\/h2>\n\n\n\n

C\u00e1c \u1ee9ng d\u1ee5ng c\u1ee7a th\u1ea1ch anh:<\/strong><\/p>\n\n\n\n