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以溶膠凝膠法製作氧化鋅摻鎂之光學性質分析 = Optical prope...

國立高雄大學應用物理學系碩士班

以溶膠凝膠法製作氧化鋅摻鎂之光學性質分析 = Optical properties of sol-gel Zn1-xMgxO powders

Record Type:	Language materials, printed : monographic
Paralel Title:	Optical properties of sol-gel Zn1-xMgxO powders
Author:	賴彥傑,
Secondary Intellectual Responsibility:	國立高雄大學
Place of Publication:	[高雄市]
Published:	撰者;
Year of Publication:	民99[2010]
Description:	53面圖，表 : 30公分;
Subject:	激子
Subject:	photoluminescence
Online resource:	http://ethesys.nuk.edu.tw/ETD-db/ETD-search-c/view_etd?URN=etd-0629110-173619
Summary:	本研究是利用光致螢光光譜技術，來分析氧化鋅摻鎂的光學特性。我們利用溶液凝膠法製作出摻雜鎂濃度x=0.01~0.1 的樣品。在結構部分，摻雜鎂濃度x=0.1 時發現到有MgO 的析出。線性光譜分析部分，我們發現到氧化鋅摻鎂樣品的能隙，有隨著摻雜濃度增加而變大；而在摻雜鎂所造成的侷限態，會影響低溫時s-shift 的發光機制。而在非線性光譜部份，我們針對氧化鋅與氧化鋅摻鎂的雙激子做研究，我們發現到氧化鋅在很弱的激發強度就發現到雙激子的存在，而氧化鋅摻鎂的雙激子的束縛能與氧化鋅接近，約13.5 meV±1.5 meV，做成量子井可穩定存在於室溫。 The optical properties of Zn1-xMgxO powders were studied byphotoluminescence (PL) in this thesis. The Zn1-xMgxO (x=0.01~0.1) powderswere grown by sol-gel method. In the structural analysis, we observed theMgO phase in the ZnMgO powder with Mg concentration x=0.1. In the regimeof linear optics, we found that the bandgap of Zn1-xMgxO increase as the Mgconcentration increases and Mg-induced localization states influenced theexciton emission at low-temperature. In the regime of nonlinear optics, westudied the biexciton properties of ZnO and Zn1-xMgxO powders. We found thatthe biexciton emission of the ZnO powder appears at low-threshold density.The free biexciton energies of the ZnMgO alloys are nearly constant at13.5±1.5 meV, as the Mg concentration x increases from 0.01 to 0.05.

以溶膠凝膠法製作氧化鋅摻鎂之光學性質分析 = Optical properties of sol-gel Zn1-xMgxO powders
賴, 彥傑

以溶膠凝膠法製作氧化鋅摻鎂之光學性質分析 = Optical properties of sol-gel Zn1-xMgxO powders / 賴彥傑撰 - [高雄市] : 撰者, 民99[2010]. - 53面 ; 圖，表 ; 30公分.
參考書目：面.
激子photoluminescence

以溶膠凝膠法製作氧化鋅摻鎂之光學性質分析 = Optical properties of sol-gel Zn1-xMgxO powders
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328 $a 碩士論文--國立高雄大學應用物理學系碩士班
330 $a 本研究是利用光致螢光光譜技術，來分析氧化鋅摻鎂的光學特性。我們利用溶液凝膠法製作出摻雜鎂濃度x=0.01~0.1 的樣品。在結構部分，摻雜鎂濃度x=0.1 時發現到有MgO 的析出。線性光譜分析部分，我們發現到氧化鋅摻鎂樣品的能隙，有隨著摻雜濃度增加而變大；而在摻雜鎂所造成的侷限態，會影響低溫時s-shift 的發光機制。而在非線性光譜部份，我們針對氧化鋅與氧化鋅摻鎂的雙激子做研究，我們發現到氧化鋅在很弱的激發強度就發現到雙激子的存在，而氧化鋅摻鎂的雙激子的束縛能與氧化鋅接近，約13.5 meV±1.5 meV，做成量子井可穩定存在於室溫。 The optical properties of Zn1-xMgxO powders were studied byphotoluminescence (PL) in this thesis. The Zn1-xMgxO (x=0.01~0.1) powderswere grown by sol-gel method. In the structural analysis, we observed theMgO phase in the ZnMgO powder with Mg concentration x=0.1. In the regimeof linear optics, we found that the bandgap of Zn1-xMgxO increase as the Mgconcentration increases and Mg-induced localization states influenced theexciton emission at low-temperature. In the regime of nonlinear optics, westudied the biexciton properties of ZnO and Zn1-xMgxO powders. We found thatthe biexciton emission of the ZnO powder appears at low-threshold density.The free biexciton energies of the ZnMgO alloys are nearly constant at13.5±1.5 meV, as the Mg concentration x increases from 0.01 to 0.05.
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