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>瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="seqmacq" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">廣東省科學(xué)院半導(dǎo)體研究所</a></p><p><span>聯(lián)系人：</span>曾昭燴</p><p><span>郵箱: </span>512480780@qq.com</p><p><span>電話: </span>15018420573</p><p><span>傳真: </span>020_</p><p><span>網(wǎng)址: </span>http://www.gdssli.com</p><p><span>手機(jī): </span>020-61086422</p><p><span>地址: </span>長興路363號(hào)</p><p>[當(dāng)前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="u4mkcio" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="2kw44ii" class="box"><p><p style="text-indent:25px">電子束蒸發(fā)源的能量可高度集中，使鍍膜材料局部達(dá)到高溫而蒸發(fā)。通過調(diào)節(jié)電子束的功率，天津叉指電極真空鍍膜加工平臺(tái)，可以方便的控制鍍膜材料的蒸發(fā)速率，特別是有利于高熔點(diǎn)以及高純金屬和化合物材料。物質(zhì)的飽和蒸氣壓隨溫度的上升而增大，在一定溫度下，各種物質(zhì)的飽和蒸氣壓不相同，且具有恒定的數(shù)值。相反，一定的飽和蒸氣壓必定對(duì)應(yīng)一定的物質(zhì)的溫度。在高真空下，電子qiang燈絲加熱后發(fā)射熱電子，被加速陽極加速，獲得很大的動(dòng)能轟擊到的蒸發(fā)材料上，把動(dòng)能轉(zhuǎn)化成熱使蒸發(fā)材料加熱氣化，天津叉指電極真空鍍膜加工平臺(tái)，而實(shí)現(xiàn)蒸發(fā)鍍膜。電子束蒸發(fā)源由發(fā)射電子的熱陰極、電子加速極和作為陽極的鍍膜材料組成。在鍍膜過程中，想要控制蒸發(fā)速率，天津叉指電極真空鍍膜加工平臺(tái)，必須精確控制蒸發(fā)源的溫度，加熱時(shí)應(yīng)盡量避免產(chǎn)生過大的溫度梯度。天津叉指電極真空鍍膜加工平臺(tái)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津叉指電極真空鍍膜加工平臺(tái),真空鍍膜" src="https://tyunfile.71360.com/UploadFile/bdtyys888/637430346306531246/6300759.png"></div><p style="text-indent:25px">磁控濺射主要利用輝光放電(glowdischarge)將氬氣(Ar)離子撞擊靶材(target)表面,靶材的原子被彈出而堆積在基板表面形成薄膜。濺鍍薄膜的性質(zhì)、均勻度都比蒸鍍薄膜來的好,但是鍍膜速度卻比蒸鍍慢比較多。新型的濺鍍?cè)O(shè)備幾乎都使用強(qiáng)力磁鐵將電子成螺旋狀運(yùn)動(dòng)以加速靶材周圍的氬氣離子化,造成靶與氬氣離子間的撞擊機(jī)率增加,提高濺鍍速率。真空鍍膜的物理過程：PVD（物理的氣相沉積技術(shù)）的基本原理可分為三個(gè)工藝步驟：（1）金屬顆粒的氣化：即鍍料的蒸發(fā)、升華或被濺射從而形成氣化源（2）鍍料粒子（（原子、分子或離子）的遷移：由氣化源供出原子、分子或離子經(jīng)過碰撞，產(chǎn)生多種反應(yīng)。（3）鍍料粒子在基片表面的沉積。天津叉指電極真空鍍膜加工平臺(tái)在一定溫度下，真空當(dāng)中，蒸發(fā)物質(zhì)的蒸氣與固體平衡過程中所表現(xiàn)出的壓力，稱為該物質(zhì)的飽和蒸氣壓。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津叉指電極真空鍍膜加工平臺(tái),真空鍍膜" src="https://tyunfile.71360.com/UploadFile/bdtyys888/637430346489862571/6081456.png"></div><p style="text-indent:25px">在薄膜生長過程中，各種副產(chǎn)物從膜的表面逐漸脫離，在真空泵的作用下從出口排出。化學(xué)氣相沉積法（CVD）是一種利用化學(xué)反應(yīng)的方式，將反應(yīng)氣體生成固態(tài)的產(chǎn)物，并沉積在基片表面的薄膜沉積技術(shù)。主要有常壓CVD、LPCVD（低壓氣相沉積法）、PECVD（等離子體增強(qiáng)氣相沉積法）等方法。PECVD反應(yīng)過程中，反應(yīng)氣體從進(jìn)氣口進(jìn)入爐腔，逐漸擴(kuò)散至襯底表面，在射頻源激發(fā)的電場作用下，反應(yīng)氣體分解成電子、離子和活性基團(tuán)等。分解物發(fā)生化學(xué)反應(yīng)，生成形成膜的初始成分和副反應(yīng)物，這些生成物以化學(xué)鍵的形式吸附到樣品表面，生成固態(tài)膜的晶核，晶核逐漸生長成島狀物，島狀物繼續(xù)生長成連續(xù)的薄膜。</p><p style="text-indent:25px">磁控濺射一般金屬鍍膜大都采用直流濺鍍,而不導(dǎo)電的陶磁材料則使用RF交流濺鍍,基本的原理是在真空中利用輝光放電(glowdischarge)將氬氣(Ar)離子撞擊靶材(target)表面，電漿中的陽離子會(huì)加速?zèng)_向作為被濺鍍材的負(fù)電極表面，這個(gè)沖擊將使靶材的物質(zhì)飛出而沉積在基板上形成薄膜。PECVD( Plasma Enhanced Chemical Vapor Deposition)等離子增強(qiáng)化學(xué)氣相沉積，等離子體是物質(zhì)分子熱運(yùn)動(dòng)加劇，相互間的碰撞會(huì)導(dǎo)致氣體分子產(chǎn)生電離，物質(zhì)就會(huì)變成自由運(yùn)動(dòng)并由相互作用的正離子、電子和中性粒子組成的混合物。PECVD當(dāng)中沉積速率過快，會(huì)導(dǎo)致氧化硅薄膜速率過快，說明薄膜質(zhì)量比較差。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="天津叉指電極真空鍍膜加工平臺(tái),真空鍍膜" src="https://tyunfile.71360.com/UploadFile/bdtyys888/637430346342615469/8583772.png"></div><p style="text-indent:25px">磁控濺射由于其內(nèi)部電場的存在，還可在襯底端引入一個(gè)負(fù)偏壓，使濺射速率和材料粒子的方向性增加。所以磁控濺射常用來沉積TSV結(jié)構(gòu)的阻擋層和種子層，通過對(duì)相關(guān)參數(shù)的調(diào)整和引入負(fù)偏壓，可以實(shí)現(xiàn)高深寬比的薄膜濺射，且深孔內(nèi)壁薄膜連續(xù)和良好的均勻性。通過PVD制備的薄膜通常存在應(yīng)力問題，不同材料與襯底間可能存在壓應(yīng)力或張應(yīng)力，在多層膜結(jié)構(gòu)中可能同時(shí)存在多種形式的應(yīng)力。薄膜應(yīng)力的起源是薄膜生長過程中的某種結(jié)構(gòu)不完整性(雜質(zhì)、空位、晶粒邊界、錯(cuò)位等)、表面能態(tài)的存在、薄膜與基底界面間的晶格錯(cuò)配等磁控濺射主要利用輝光放電將氬氣離子撞擊靶材表面,靶材的原子被彈出而堆積在基板表面形成薄膜。天津叉指電極真空鍍膜加工平臺(tái)</p><p style="text-indent:25px">利用PECVD生長的氮化硅薄膜薄膜應(yīng)用范圍廣，設(shè)備簡單，易于產(chǎn)業(yè)化。天津叉指電極真空鍍膜加工平臺(tái)</p><p style="text-indent:25px">電子束蒸發(fā)法是真空蒸發(fā)鍍膜中常用的一種方法，是在高真空條件下利用電子束進(jìn)行直接加熱蒸發(fā)材料，使蒸發(fā)材料氣化并向襯底輸運(yùn)，在基底上凝結(jié)形成薄膜的方法。在電子束加熱裝置中，被加熱的材料放置于水冷的坩堝當(dāng)中，可避免蒸發(fā)材料與坩堝壁發(fā)生反應(yīng)影響薄膜的質(zhì)量，因此，電子束蒸發(fā)沉積法可以制備高純薄膜。LPCVD反應(yīng)的能量源是熱能，通常其溫度在500℃-1000℃之間，壓力在0.1Torr-2Torr以內(nèi)，影響其沉積反應(yīng)的主要參數(shù)是溫度、壓力和氣體流量，它的主要特征是因?yàn)樵诘蛪涵h(huán)境下，反應(yīng)氣體的平均自由程及擴(kuò)散系數(shù)變大，膜厚均勻性好、臺(tái)階覆蓋性好。目前采用LPCVD工藝制作的主要材料有：多晶硅、單晶硅、非晶硅、氮化硅等。天津叉指電極真空鍍膜加工平臺(tái)</p><p style="text-indent:25px">廣東省科學(xué)院半導(dǎo)體研究所致力于電子元器件，是一家服務(wù)型的公司。廣東省半導(dǎo)體所致力于為客戶提供良好的微納加工技術(shù)服務(wù)，真空鍍膜技術(shù)服務(wù)，紫外光刻技術(shù)服務(wù)，材料刻蝕技術(shù)服務(wù)，一切以用戶需求為中心，深受廣大客戶的歡迎。公司從事電子元器件多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。在社會(huì)各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗(yàn)，為客戶成功提供堅(jiān)實(shí)有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2978804.html</p></div></div></div></div></div><div id="og20a4s" class="page-right twoColRt"><div 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