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  • 學位論文

氮化銦鎵量子井/聚醯胺樹狀高分子的能量轉移特性研究

The Energy Transfer studies of InGaN Quantum Wells/PAMAM Dendrimers

指導教授 : 沈志霖

摘要


本論文我們利用觀察光激螢光光譜與時間解析光激螢光光譜的減少量,研究氮化銦鎵/氮化鎵量子井與奈米材料之間的轉移機制。我們使用氮化銦鎵/氮化鎵量子井作為施子、樹狀高分子作為受子。我們在室溫底下,以光波導的形式,藉由利用時間解析光激螢光光譜觀察其載子生命週期的變化,改變施子與受子二者之間的距離(d),瞭解到螢光共振能量轉移和施子與受子的距離之間有倒數平方反比(d-2)的關係,暗示著其電偶極矩是以二維對二維的方式存在。此系統最大能量轉移效率約略是72±5%,非常有希望被應用在生醫感測元件上。

並列摘要


In this thesis we demonstrated a transfer dynamics between InGaN/GaN quantum wells (QWs) and nanomaterials by observing a reduction in the photoluminescence (PL) and time-resolved PL (TRPL) measurements. we introduced InGaN/GaN QWs as donors and PAMAM dendrimers as acceptors. We used TRPL measurements to observe the lifetime changing under room temperature through optical waveguiding, the energy transfer efficiency depended on the distance (d) between the InGaN/GaN QWs and PAMAM dendrimers by a factor of d-2, suggesting a layer-to-layer dipole interactions. The maximum energy transfer efficiency of PAMAM dendrimers system is 72±5%, which has a great potential application in biomedical sensors.

並列關鍵字

PAMAM Dendrimers Energy Transfer

參考文獻


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