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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Analyse par XPS d'empilements High-K Metal Gate de transistors CMOS et corrélation des décalages d'énergie de liaison aux tensions de seuil / XPs analysis of High K Metal Gate transistors and relationship between binding energy shift and threshold voltage

Fontaine, Charly 07 March 2019 (has links)
Les dernières technologies microélectroniques embarquent des transistors dont les isolants de grille sont des isolants à forte constante diélectrique (high-k en anglais) associés à des grilles métalliques (on utilise l'abréviation HKMG pour high-k – metal gate). Si cet empilement permet de garder une quantité de charges suffisante dans le canal, il est plus difficile de contrôler les tensions de seuil des transistors à cause de la présence de charges et de dipôle dans ces couches ou aux interfaces. Deux études préliminaires ont établi qu'il existe une corrélation entre les énergies de liaisons des éléments mesurées par XPS d'un empilement HKMG et la tension de seuil d'un transistor utilisant ce même empilement. Des charges sont présentes dans les couches isolantes des empilements HKMG, conduisant à un décalage du potentiel électrostatique au sein de ces couches. Ceci induit une modification du travail de sortie effectif de l'électrode métallique du transistor. Et en XPS ces charges induisent une variation de l'énergie cinétique des électrons extraits des couches se trouvant sous ces charges. L'objectif de cette thèse est de simuler de manière quantitative l'impact électrostatique induit par ces charges et dipôles et de comparer cet impact aux décalages des raies XPS ainsi qu'aux mesures électriques des tensions de seuil des transistors. Ceci permettra ensuite d'estimer la variation des tensions seuil des transistors très en amont dans le procédé de fabrication / The last microelectronic technologies includes transistors with materials of high dielectric constant (high-k ) associated to metal gate (we use the abbreviation HKMG for high-k - bad metal). If this pile allows to keep a sufficient quantity of charges in the channel, it is more difficult to check the threshold voltage of transistors because of the presence of charge and of dipole in these layers or in the interfaces. Two preliminary studies established that there is a correlation between the binding energies measured by XPS of a pile HKMG and the threshold voltage of a transistor using the same pile. Charges are present in the insulating layers of piles HKMG, leading to a difference of the electrostatic potential within these layers. A modification of the effective workfunction of the metallic electrode of the transistor in s then observed, and in XPS these charges lead t oa variation of the kinetic energy of electrons extracted from the layer. The purpose of this thesis is simulate in a quantitative way the electrostatic impact of this charges and dipôles and to compare this impact with the observation made by XPS as well as with the electric measures of the threshold voltage of transistors. This will then allow to estimate the variation of the threshold voltage of transistors well further in the manufacturing process.
2

晶圓製程設備產業智慧資源規劃之研究 / The Research of Intelligence Resources Planning of Wafer Fabrication Equipment Industry

沈志祥, Shian, Shen Unknown Date (has links)
晶圓製程設備商必須充分利用全球化智慧資源規劃,發展企業策略,才能創造企業競爭力和成長動能。經過多次的景氣循環,晶圓設備產業已經成為少數廠商全球激烈競爭的環境,特別是仍有兩家設備供應商以上的產品線。對於客戶而言,購買設備的主要因素來自於廠商製程能力和成本的優勢。除了少數關鍵製程由一家壟斷外,客戶都可以在每一個新製程世代(Technology node)找到兩家廠商評估設備和技術需求。在贏者全拿的壓力與吸引力下,在每一個新製程世代的銷售週期中,晶圓設備商都必須要充分利用智慧資本化的效益,掌握客戶的技術、量產時程,才能確保銷售空間。在發展策略上,為面對高技術競爭但是低成長的產業環境,晶圓設備商必須要透過併購和整合其核心技術相關新事業才能同時整合既有智慧資源和創造成長。 不管從市場規模和產業鏈來看,台灣的半導體產業已經成為全球最重要的製造據點,也是台灣最重要的產業之一。半導體製造廠龐大的資本支出和相關需求更讓台灣成為各半導體設備商的銷售服務的兵家必爭之地。根據SEMI的最新市場調查,總計台灣2007年的半導體設備市場達到106.5億美元,較2006年大幅成長45.2%,正式超越日本成為全球最大半導體設備投資市場。在產業鏈中,晶圓製程設備除了是晶圓廠最大資本支出外,還是產業技術發展的供應者。很可惜的是,雖然擁有龐大的商機做後盾,台灣卻沒有及時發展這個領域。在轉換成本、專利、和領導晶圓製造商合作開發和人才、資金等高產業門檻下,除了自動化設備較有進展外,台灣在晶圓製程設備產業的自給率普遍低於5%,技術、智財和人才還是掌握在外國的晶圓製程設備廠商。在沒有整合產、官、學、研等資源和適合的智財管理規劃下,在需要高度基礎科學和長遠技術發展的晶圓製程設備產業,我們設備自制化的結果不高,並不令人訝異。晶圓製造業者的議價和技術自主能力因此而受到拘束,所發展的智財也沒有太大價值和效用。 本研究目的希望以智慧資源規劃為研究方法,進行晶圓製程設備產業的實證研究。先就市場特性分析晶圓製程設備產業概況,接著探討廠商如何運用智慧資源規劃的資本化和產業結構化切入市場,最後在實證研究上以分析主要晶圓製程設備廠商的專利能量和最新奈米技術High-k/Metal Metal Gate探討產業的技術發展趨勢與廠商智慧資源規劃的運用和佈署。期望從綜合上述論點,做為台灣是否適合發展晶圓製程設備和又該如何準備智慧資源規劃的參考。 / Global intellectual resource planning (IRP) is cruicial in industrial strategy for wafer fabrication equipment vendors to develop competence and growth momentums. After several business cycles during the past few decades, this industry has become a very competitive market of a few players. For their customers, the key decision factors are the technology capability and cost of the vendors. Except for some critical process equipments dominated by only one vendor, the customers can identify 2 vendors to evaluate their equipment and cost performance. That Winner takes all become the pressure and attraction of the industry. The vendors must fully apply the value of intellectual property and overhaul their customer’s technology and production roadmap to ensure their share in the market. To cope with the market challenges of low growth and highly competitiveness, the vendors must incoporate and integrate other new companies of their core technology to consolidate given intellectual resource and create better achievements. Either from the perspective of market size and industry value chain, Taiwan has played the most important role in semiconductor manufacturing industry worldwide. To extend their market share and keep in the lead, the foundry and DRAM companies have aggressively invested in the production of 300mm fabs. The vast investments and its production demands have made Taiwan the most competitive place in semiconductor equipment markets. According to the SEMI most update, the business volume of Taiwan semiconductor equipments market reached to US$10.65 billion in 2007, with an impressive growth of 45.2% more than 2006. Taiwan has overtaken Japan and become the largest semiconductor equipment markets in the world. In the industry value chain, the wafer fabrication equipments not only accounted for the greatest capital expenditure of fibs but also the foundation for the process technology development. It is a pity that the equipments industry in Taiwan did not flourish as along with the great market here. All the key technologies, people, materials and components are manipulated by foreign vendors. This situation resulted in an un-balanced development in domestic semiconductor industry as well as the bargain power and self-owned technology. The related developed intellectual rights can not show the real value and effect. With the high entry barriers of transfer cost, patents, professionals and investments of wafer fabrication equipments markets, Taiwan vendors take less than 5% in the market share, except for some progress in automation equipments of lower IP, capital and transfer cost barriers. The Taiwan vendors have not demonstrated capability in process technology to penetrate the markets. The wafer fabrication equipment market growth was a result of o the outsource investment from Europe, US and Japan fabs. It turns out that the technology, IP and people are still possessed by foreign vendors. Without the synergy and integration of government, academia and industry and intangible resource planning, it is not surprising that our production localization ratio is relatively low. Thus, the thesis will elaborate the case study in the way of intellectual resource planning. First, the research will analyze the industrial characteristics of wafer fabrication equipment market. In the followings, this research will discuss how vendors can apply IRP to penetrate the market. Finally, this research will analyze the patents of major vendors and High-k/Metal Gate process technology to elaborate the industry technology cycles and new technology development strategy. As a result, the thesis will try to discuss if it is suitable for Taiwan to develop the wafer fabrication equipment market and also serve for reference how to prepare the intellectual resource planning.

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