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class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bdtyys888/637430346342615469/8583772.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="emdelxd" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/bdtyys888/637430346342615469/8583772.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="z8c3zzg" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>河北功率器件真空鍍膜工藝,真空鍍膜</p><p><span>***更新：</span>2021-01-04 04:22:23</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="mpwiefr" 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: </span>020-61086422</p><p><span>地址: </span>長興路363號</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="pxn2imr" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="geaw7n8" class="box"><p><p style="text-indent:25px">對于薄膜應(yīng)力主要有以下原因：1.薄膜生長初始階段，薄膜面和界面的表面張力的共同作用；2.沉積過程中膜面溫度遠(yuǎn)高于襯底溫度產(chǎn)生熱應(yīng)變；3.薄膜和襯底間點陣錯配而產(chǎn)生界面應(yīng)力；4.金屬膜氧化后氧化物原子體積增大產(chǎn)生壓應(yīng)力；5.斜入射造成各向異性成核、生長；6.薄膜內(nèi)產(chǎn)生相變或化學(xué)組分改變導(dǎo)致原子體積變化。熱氧化是在一定的溫度和氣體條件下，使硅片表面氧化一定厚度的氧化硅的。主要有干法氧化和濕法氧化，干法氧化是在硅片表面通入氧氣，硅片與氧化反應(yīng)生成氧化硅，氧化速率比較慢，氧化膜厚容易控制。濕法氧化在爐管當(dāng)中通入氧氣和氫氣，兩者反應(yīng)生長水蒸氣，水蒸氣與硅片表面反應(yīng)生長氧化硅，濕法氧化，河北功率器件真空鍍膜工藝，速率比較快，河北功率器件真空鍍膜工藝，河北功率器件真空鍍膜工藝，可以生長比較厚的薄膜。真空蒸發(fā)鍍膜是真空室中，加熱蒸發(fā)容器待形成薄膜的原材料，使其原子或者分子從表面氣化逸出，形成蒸汽流。河北功率器件真空鍍膜工藝</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北功率器件真空鍍膜工藝,真空鍍膜" src="https://tyunfile.71360.com/UploadFile/bdtyys888/637430346342615469/8583772.png"></div><p style="text-indent:25px">真空蒸發(fā)鍍膜是在真空室中，加熱蒸發(fā)容器待形成薄膜的原材料，使其原子或者分子從表面氣化逸出，形成蒸汽流，入射到襯底或者基片表面，凝結(jié)形成固態(tài)薄膜的方法。真空蒸發(fā)鍍膜法，設(shè)備比較簡單、容易操作、制成的薄膜純度高、質(zhì)量好、膜厚容易控制，成膜速率快，效果高。在蒸發(fā)溫度以上進(jìn)行蒸發(fā)試，蒸發(fā)源溫度的微小變化即可引起蒸發(fā)速率發(fā)生很大變化。因此，在鍍膜過程中，想要控制蒸發(fā)速率，必須精確控制蒸發(fā)源的溫度，加熱時應(yīng)盡量避免產(chǎn)生過大的溫度梯度。蒸發(fā)速率正比于材料的飽和蒸氣壓，溫度變化10%左右，飽和蒸氣壓就要變化一個數(shù)量級左右。廣東光電器件真空鍍膜加工平臺通過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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北功率器件真空鍍膜工藝,真空鍍膜" src="https://tyunfile.71360.com/UploadFile/bdtyys888/637430346489862571/6081456.png"></div><p style="text-indent:25px">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。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?；瘜W(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（等離子體增強氣相沉積法）等方法。</p><p style="text-indent:25px">常用的薄膜制備方式主要有兩種，其中一種是物理的氣相沉積（PVD），PVD的方法有磁控濺射鍍膜、電子束蒸發(fā)鍍膜、熱阻蒸發(fā)等。另一種是化學(xué)氣相沉積法（CVD），主要有常壓CVD、LPCVD（低壓氣相沉積法）、PECVD（等離子體增強氣相沉積法）等方法。解決靶中毒主要有以下幾種方法;1.使用射頻電源進(jìn)行濺射；2.采用閉環(huán)控制反應(yīng)氣體通入流量；3.使用孿生靶交替濺射；4.控制鍍膜模式的變換：在鍍膜前，采集靶中毒的遲滯效應(yīng)曲線，使進(jìn)氣流量控制在產(chǎn)生靶中毒的前沿，確保工藝過程始終處于沉積速率陡降前的模式。等離子體化學(xué)氣相沉積法，利用了等離子體的活性來促進(jìn)反應(yīng)，使化學(xué)反應(yīng)能在較低的溫度下進(jìn)行。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河北功率器件真空鍍膜工藝,真空鍍膜" src="https://tyunfile.71360.com/UploadFile/bdtyys888/637430346295876877/4943151.png"></div><p style="text-indent:25px">真空鍍膜的工藝流程：真空鍍膜的工藝流程一般依次為：前處理及化學(xué)清洗（材料進(jìn)行有機清洗和無機清洗）→襯底真空中烘烤加熱→等離子體清洗→金屬離子轟擊→鍍金屬過渡層→鍍膜（通入反應(yīng)氣體）。PECVD，等離子體化學(xué)氣相沉積法是借助微波或射頻等使含有薄膜組成原子的氣體電離，使局部形成等離子體，而等離子體化學(xué)活性很強，兩種或多種氣體很容易發(fā)生反應(yīng)，在襯底上沉積出所期待的薄膜。為了使化學(xué)反應(yīng)能在較低的溫度下進(jìn)行，利用了等離子體的活性來促進(jìn)反應(yīng)，因此，這種CVD稱為等離子體增強化學(xué)氣相沉積。磁控濺射可用于多種材料，適用性普遍。電子束蒸發(fā)真空鍍膜公司</p><p style="text-indent:25px">降低PVD制備薄膜的應(yīng)力，可以提高襯底溫度。河北功率器件真空鍍膜工藝</p><p style="text-indent:25px">PECVD在低溫范圍內(nèi)（200-350℃），沉積速率會隨著基片溫度的升高而略微下降，但不是太明顯。PECVD生長氧化硅薄膜是一個比較復(fù)雜的過程，薄膜的沉積速率主要受到反應(yīng)氣體比例、RF功率、反應(yīng)室壓力、基片生長溫度等。在一定范圍內(nèi)，提高硅烷與笑氣的比例，可提供氧化硅的沉積速率。在RF功率較低的時候，提升RF功率可提升薄膜的沉積速率，當(dāng)RF增加到一定值后，沉積速率隨RF增大而減少，然后趨于飽和。在一定的氣體總量條件下，沉積速率隨腔體壓力增大而增大。河北功率器件真空鍍膜工藝</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，以科技創(chuàng)新實現(xiàn)***管理的追求。廣東省半導(dǎo)體所作為面向半導(dǎo)體光電子器件、功率電子器件、MEMS、生物芯片等前沿領(lǐng)域，致力于打造***的公益性、開放性、支撐性樞紐中心。平臺擁有半導(dǎo)體制備工藝所需的整套儀器設(shè)備，建立了一條實驗室研發(fā)線和一條中試線，加工尺寸覆蓋2-6英寸（部分8英寸），同時形成了一支與硬件有機結(jié)合的專業(yè)人才隊伍。平臺當(dāng)前緊抓技術(shù)創(chuàng)新和公共服務(wù)，面向國內(nèi)外高校、科研院所以及企業(yè)提供開放共享，為技術(shù)咨詢、創(chuàng)新研發(fā)、技術(shù)驗證以及產(chǎn)品中試提供支持。的企業(yè)之一，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)。廣東省半導(dǎo)體所不斷開拓創(chuàng)新，追求出色，以技術(shù)為先導(dǎo)，以產(chǎn)品為平臺，以應(yīng)用為重點，以服務(wù)為保證，不斷為客戶創(chuàng)造更高價值，提供更優(yōu)服務(wù)。廣東省半導(dǎo)體所始終關(guān)注電子元器件市場，以敏銳的市場洞察力，實現(xiàn)與客戶的成長共贏。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2694907.html</p></div></div></div></div></div><div id="d7gsqwh" class="page-right twoColRt"><div id="kxubijv" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gugxt3w" class="recomPic likePro"><a 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