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文章詳情

如何實時監測半導體工藝中的安瓿是否耗盡與泄漏?

日期:2025-09-07 13:44
瀏覽次數:2
摘要: @page Section1 { size:595.3pt 841.9pt; margin:72pt 90pt } div.Section1 { page:Section1 } 孔文靜 企業用戶_1363065637 0 157257600 2025-09-05T02:25:21Z 2025-09-05T02:28:13Z 4 0 0 0 0 0 0.0000 199D6C57EDB5463AA4D10793B3AE51AB_12 2052-12.1.0.22529 eyJoZGlkIjoiNWU3YmNkMGUyOWJiYmNmNDQzMDA3NjczOTJjZGRkZDciLCJ1c2VySWQiOiIxNTk1NzA5NzUyIn0= 在半導體制造中,工藝的...

在半導體制造中,工藝的精準性與一致性至關重要。化學氣相沉積(CVD)和原子層沉積(ALD)等先進的沉積技術依賴安瓿來儲存和輸送前驅體,以形成厚度精準、性能一致的薄膜若安瓿在工藝過程中耗盡而未及時被發現,將導致薄膜不均勻、缺陷增多甚至器件失效,嚴重影響整批晶圓的質量。此類故障不僅會降低良率,還會推高生產成本并造成材料浪費。

 

 

一、實時監測如何實現?

安裝在半導體CVD設備前級管路的INFICON  SemiQCM® SR 傳感器或 SemiQCM® CR 傳感器,可實時監測前驅體輸送狀態,及時發現異常。

SemiQCM 傳感器基于石英晶體微天平技術,配合INFICON IMM-200  頻率監控器使用,可檢測極細微的質量變化,實時反映前驅體流動狀態。對于高沸點前驅體,有時僅需處理一片晶圓就能識別輸送故障。

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二、實際應用:以鉬前驅體為例

以鉬(Mo)前驅體監測為例。通過將SemiQCM傳感器安裝在溫度較低的前級管路中,可檢測五氯化鉬(MoCl?)或二氯二氧化鉬(MoO?Cl?)等前驅體蒸汽的凝結情況。前驅體在傳感器表面凝結會導致質量增加,進而引起頻率變化

 

頻率顯著下降表明前驅體在傳感器上凝結,系統供應正常;頻率保持穩定則說明安瓿已耗盡,無前驅體輸送。通過持續監測頻率變化,SemiQCM傳感器可準確判斷前驅體狀態,觸發警報或自動響應,保障工藝穩定。

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在相同工藝條件下,SemiQCM傳感器測量耗盡與未耗盡安瓿時的頻率變化對比

點擊下載應用說明,了解更多安瓿監測技巧

 

三、泄漏檢測:防患于未然

SemiQCM傳感器還能通過連續監測識別腔室或處理系統中的潛在泄漏,進一步提升工藝可靠性與穩定性。

發生泄漏時,氧氣(O?)進入載氣管道,會降低前驅體分壓,影響沉積效果,同時引發SemiQCM傳感器頻率顯著偏移。一方面晶片因前驅體不足導致膜厚下降,另一方面傳感器表面的MoCl?Mo會與氧氣反應生成高密度的鉬氧化合物,導致質量顯著增加,頻率急劇下降。這種異常頻率變化可用于早期泄漏檢測,避免工藝中斷

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前驅體未耗盡時,SemiQCM傳感器在有無泄漏情況下的歸一化頻率變化對比

 

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在半導體制造工藝不斷邁向新高度的今天,對每一環節的控制與一致性都提出了高要求。INFICON SemiQCM 傳感器正是這一進程中的關鍵保障,它使制造商能夠實現毫秒級的工藝洞察、精準預警安瓿耗盡與泄漏風險,從而大幅提升良率、降低廢片率,賦能高效益、高穩定性的智能化生產未來。

 

 

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