MPB所誘發巨大介電high-K與使用氫電漿提升高溫熱穩定性背後的材料科學;Physical insight of Giant Permittivity at the Morphotropic Phase Boundary FE-HfO2 and Hydrogen-Plasma-treatment Thermal Robustness in High-k Dielectrics

NCUIR > College of Electrical Engineering & Computer Science > Graduate Institute of Electrical Engineering > Electronic Thesis & Dissertation > Item 987654321/99416

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/99416

Title:	MPB所誘發巨大介電high-K與使用氫電漿提升高溫熱穩定性背後的材料科學;Physical insight of Giant Permittivity at the Morphotropic Phase Boundary FE-HfO2 and Hydrogen-Plasma-treatment Thermal Robustness in High-k Dielectrics
Authors:	陳浩銘;Chen, Hao-Ming
Contributors:	電機工程學系
Keywords:	非揮發性記憶體;鐵電電容;同相行介面;Memory;FeCAP;MPB
Date:	2025-12-12
Issue Date:	2026-03-06 18:56:56 (UTC+8)
Publisher:	國立中央大學
Abstract:	本研究針對 HfO₂–ZrO₂ 疊層薄膜之組成、氫流量與界面工程進行系統性探討，建立其介電充電行為、高頻穩定性與缺陷行為之關聯性。結果顯示，位於 MPB 近旁的氫處理後HZZ53 組成具有最高介電常數與最低耗散因子，並由 XPS 分析確認其具較低氧缺陷比例與較佳晶格穩定性。脈衝操作顯示該組成具備完整的快速介電響應，可有效避免準靜態 C–V 於高頻下之 dipole-lag 侷限，使動態介電常數遠高於傳統量測值。除高頻性能外，低缺陷密度（Dit）亦使其在耐久性與熱穩定性上保持優異表現，並在極薄 EOT 下仍維持低漏電特性。透過鐵電畴方向示意圖建立之模型顯示，其快速可翻轉極化與溫度誘發極化變化具一致性，為後續焦電效應與高頻介電整合奠定物理基礎。本研究提出一套兼具高 k、高頻穩定與高可靠度之 HfO₂–ZrO₂ 疊層工程策略，對記憶體與超薄介電元件具有高度應用潛力。;This study systematically investigates the composition, hydrogen-flow conditions, and interfacial engineering of HfO₂–ZrO₂ stacked films, establishing the correlation between dielectric charging behavior, high-frequency stability, and defect characteristics. The hydrogen-treated HZZ53 composition located near the MPB exhibits the highest dielectric constant and the lowest dissipation factor, confirmed by XPS analysis showing reduced oxygen-related defects and improved lattice stability. Pulse-based measurements reveal a fully activated fast dielectric response, effectively avoiding the dipole-lag limitations observed in high-frequency quasi-static C–V and resulting in significantly enhanced dynamic dielectric constants. In addition to its high-frequency performance, the low defect density (Dit) contributes to excellent endurance and thermal stability, while maintaining low leakage even at ultrathin EOT. A domain-orientation model further illustrates that the fast switchable polarization is consistent with temperature-induced polarization variations, providing the physical basis for future pyroelectric and high-frequency dielectric integration. This work presents a robust engineering strategy for achieving high-k, high-frequency-stable, and highly reliable HfO₂–ZrO₂ dielectric stacks, demonstrating strong potential for memory and ultrathin capacitor applications.
Appears in Collections:	[Graduate Institute of Electrical Engineering] Electronic Thesis & Dissertation

Files in This Item:

File	Description	Size	Format
index.html		0Kb	HTML	109	View/Open

社群 sharing

Loading...