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  • 學位論文

以光激螢光對介孔二氧化矽MCM-41與非對稱微腔體的光學研究

Photoluminescence studies of mesoporous silica:MCM-41 and asymmetric microcavities

指導教授 : 沈志霖
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摘要


本文以光激螢光研究二氧化矽組成的介孔材料,可發現源自於氧相關缺陷中心的紅色螢光,而且經由在純氮環境中快速熱退火的處理後,其螢光強度有增強的現象。此外發現螢光強度會有隨時間衰減的現象,此現象可能是和氫與氧相關缺陷中心的結合有關。 另外,我們以平面方向與正向光激螢光研究非對稱性半導體微空腔結構,分別觀察到量子井激子與空腔共振模式光子的螢光訊號。量子井激子的能量在共振腔模式的影響下有微量的位移,且在空腔模式的品質因子隨溫度的變化中,可以發現量子井激子與空腔模式有交互作用。

關鍵字

介孔材料 微空腔 光激螢光

並列摘要


Photoluminescence (PL) was used to investigate silica mesoporous material. The results found that the red luminescence, origin from non-bridging oxygen hole centers (NBOHCs), can be enhanced by rapid thermal annealing in pure N2 environment. In addition,we found the red luminescence intensity decay with time. The decay behavior may be related to the recombination of H and NBOHCs. We also investigated asymmetric semiconductor microcavities using in-plane and normal PL. The luminescence from quantum well excitons and cavity mode photons was observed. The energy of quantum-well excitons shifts slightly by the influence of cavity mode. In the temperature-dependent quality factor measurement,it was observed the cavity mode interacts with the quantum-well excitons

並列關鍵字

mesoporous photoluminescence microcavity

參考文獻


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