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研究生(外文):Ming-Yao Yen
論文名稱(外文):Studies and Application of Self-Assembled Monolayers on Microvia Filling of PCB by Copper Plating
指導教授(外文):Wei-Ping Dow
外文關鍵詞:SAMsSelf-Assembled MonolayersCopper PlatingPCB
  • 被引用被引用:7
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本論文主要研究目的乃利用所謂的自組裝薄膜技術,在以銅、黃金為晶種層的印刷電路板上形成SPS(Bis(3-Sufopropy) Disulfide,(NaSO3(CH2)3S)2)的SAMs,進行電鍍填孔,銅板在預浸2.82×10-5~1.12×10-4 M SPS可得到最好的填孔能力,在黃金板上預浸8.46×10-7~1.12×10-3M SPS可以得到最好的填孔能力。並利用具有不同末端官能基HS-(CH2)3-SO3-、HS-(CH2)2-COOH以及HS-(CH2)3-OH的硫醇分子在銅板上形成SAMs進行電鍍填孔,結果發現只有末端官能基為-SO3-才有填孔的能力。
吾人使用計時電位分析法及線性掃描伏安法,對SAMs進行的電化學行為之研究,研究結果發現黃金電極上的SPS SAMs導致銅的沈積以3D方式成長,而在銅電極上則是以2D成長方式;當硫醇末端官能基為-SO3-(MPS)會與氯離子產生協合效應,造成銅沈積於SAMs之下是屬於Buried layer沈積方式,末端官能基為-COOH(MPA)、-OH(MPE)會與氯離子產生交互作用而造成沈積於SAMs之上,屬於On top沈積方式。
Recently, electronics products become lighter, thinner, shorter, multi-functional and complicated. The distance of contact between the integrated circuit devices is shorter and shorted and the speed of signal transmission is required faster and faster, relatively, high density pattern must be designed to meet these requirements. As a result, multilayer printed circuit boards (PCBs) with microvia metallization become the main trend in fabrication. A topic how to metallize the conducting wires and microvias without void and loose structure in copper deposit becomes a major research.
The major topic of this thesis is to employ Self-Assembled Monolayers (SAMs) technology formed on copper and gold seed layer of PCB to achieve copper fill in the microvias. From the experiments results, the optimal pretreatment concentration of SPS (i.e., Bis(3-Sufopropy) Disulfide, (NaSO3(CH2)3S)2) for microvia fill is from 2.82×10-5 to 1.12×10-4 M on copper seed layer and from 8.46×10-7 to 1.12×10-3 M on gold seed layer, respectively. Besides, we employ different end groups, such as HS-(CH2)3-SO3–, HS-(CH2)2-COOH, and HS-(CH2)3-OH to form SAMs on copper seed layer to prove that only the -SO3– end group exhibits filling capability.
According to the analyses of chronopotentimetry and linear sweep voltammetry, we find that the SPS-SAMs formed on the gold seed layer results in copper deposition belonging to a mode of three-dimension growth, while, on the copper seed layer, it belongs to a mode of two-dimension growth. The -SO3– end group interacts with chloride ion to result in a so-called “buried layer” deposition mode. On the other hand, the end groups, such as -COOH (MPA) and -OH (MPE) lead to a so-called “on top” deposition mode.
According to this research, we can understand the mechanism of copper deposition due to the addition of thiol molecules. Moreover, the research provides people with a further consideration and suggestion about SAMs technology. Finally, it is expected that this technology is applicable for accelerator analysis and control in a practical plating bath.
中文摘要 i
英文摘要 iii
謝 誌 v
總目錄 vi
圖目錄 viii
表目錄 xvii
一、緒論 1
1-1前言 1
二、理論與文獻回顧 3
2-1文獻回顧 3
2-1-1銅製程技術簡介 3
2-1-2有機單分子層簡介 23
2-2研究目的 35
2-3研究方法 36
三、電鍍填孔實驗 37
3-1實驗方法與步驟 37
3-1-1實驗藥品 37
3-1-2實驗裝置 38
3-1-3實驗裝置 42
3-1-4實驗步驟 43
3-2實驗結果 46
四、自組裝薄膜(Self-assembled Monolayers,SAMs)的電化學行為 89
4-1電化學原理 89
4-1-1計時電位分析法(Chronopotentimetry,CP) 90
4-1-2線性掃描伏安法(Linear Sweep Voltammetry,LSV) 90
4-1-3極化曲線(Polarization Curve) 91
4-2實驗裝置 93
4-3實驗步驟 94
4-4實驗結果 95
五、結論 123
參考文獻 124
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