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系統識別號 U0002-1507201200430600
中文論文名稱 氮氣誘導可調發光奈米石墨烯薄電子結構之研究
英文論文名稱 Nitrogen-functionalized Graphene Nano-flakes(GNFs:N):Tunable Photoluminescence and Electronic Structures
校院名稱 淡江大學
系所名稱(中) 物理學系碩士班
系所名稱(英) Department of Physics
學年度 100
學期 2
出版年 101
研究生中文姓名 彭信穎
研究生英文姓名 Hsin Ying Peng
學號 698210209
學位類別 碩士
語文別 中文
口試日期 2012-06-21
論文頁數 57頁
口試委員 指導教授-彭維鋒
委員-薛宏中
委員-陳俊維
中文關鍵字 X 光吸收能譜  X 光發射能譜  X 光共振非彈性散射能譜  X光激發發光光譜  奈米石墨烯薄膜 
英文關鍵字 XANES  XES  RIXS  XEOL  Photoluminescence (PL)  Graphene Nano-flakes (GNFs) 
學科別分類 學科別自然科學物理
中文摘要 本論文主要是以X 光吸收光譜(X-ray absorption near-edge structure,XANES)和X 光激發發光光譜(X-ray excited optical luminescence,XEOL)研究氮氣參雜於奈米石墨烯薄膜所造成光致發光(Photoluminescence,PL)特性的電子結構與鍵結形式,包含吡啶型(pyridine-like N-C)、類石墨型碳氮(graphitic-like C-Nbonding) 、類吡咯型氮(pyrrolic N) 和C=O的結構形式。以用X 光發射能譜(X-ray emission spectroscopy,XES)、X光共振非彈性散射能譜(Resonance inelastic x-ray scattering,RIXS)去證明當氮參雜入石墨烯薄膜時在π 區域和π 和π*區域的電子態密度有所
增加,確因C, N 和O 所構成sp2 團造成光致發光的藍位移現象和主要發光波段。這項研究證明可以通過適當的調整氮和氧的含量來調配光致發光的光學性質,為未來的光學元件光學性質調配提供了一項方法。
英文摘要 This thesis investigates the electronic structures and bonding properties of photoluminescence (PL) materials : nitrogen-functionalized two dimensional graphene nano-flakes (GNFs:N) by the x-ray absorption near-edge structure (XANES) and x-ray excited optical luminescence (XEOL),The electronic bonding of GNFS:N are observed which include pyridine-like N-C, graphite-N-like, pyrrolic N and the C=O bonding. We using x-ray emission spectroscopy (XES)
and resonance inelastic x-ray scattering (RIXS) to prove the
nitrogen-functionalized two dimensional GNFs:N, which arise from the significantly enhanced density of states in the π region of states and the gap between π and π* states, the resonant energy transfer from the N and C atoms to the
sp2 clusters was found to be responsible for the blue-shift and the enhancement of the main PL emission feature. This study demonstrates that PL emission can be tailored through appropriate tuning of the nitrogen and oxygen contents in GNFs, and pave the way for new optoelectronic devices.
論文目次 第一章 緒論........................................2
(一) 石墨烯的起源,特性與應用.......................2
(二) 石墨烯發光特性之探討. .........................3
第二章 實驗技術....................................5
(一) X 光吸收光譜簡介(XAS) ........................5
(A) X 光吸收近邊緣結構(XANES).................8
(B) X 光延伸吸收精細結構(EXAFS). ..............9
(C)實驗方法....................................13
(D)數據分析....................................17
(二) X光電子能譜(XPS) ............................21
(三) X 光發射能譜(XES)與共振非彈性散射能譜(RIXS).23
(四) X 光激發發光光譜(XEOL)......................25
第三章 氮氣參雜石墨烯薄膜電子結構之研究. ..........26
(一) 氮氣參雜石墨烯薄膜發光機制介紹. ..............26
(二) 樣品製備與量測. ..............................26
(三) 實驗數據分析與討論 . .........................31
第四章 結論. ......................................53
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