臺灣博碩士論文加值系統

我們將利用高真空蒸鍍系統，在透明的導電陽極-氧化錫銦玻璃基板上成長有機薄膜與金屬陰極，進而完成兩波長之白光有機發光二極體白光照明面板的製備。在研究過程中，我們將利用多層結構的方法來完成有機電機發光元件的研製，其完整結構為透明陽極/電洞傳導層/紅光發光層/電子傳導層/金屬陰極。而我們將改變不同發光層厚度比例來進行元件光電特性的探討。
緊接著，我們將有系統地探討不同發光層厚度比例對白光有機發光二極體光電特性的影響。經我們研究證實，最佳化的白光有機發光二極體具有高穩定性的CIE值表現，其原因推測可能為在不同操作電流下，所產生的激子均能夠有效地被侷限在TDAF : Rubrene / undoped TDAF界面附近的區域。其中為了得到最佳白光有機發光二極體元件，我們將利用10 Å厚度的TDAF摻雜Rubrene並搭配90 Å厚度的TDAF來得到最佳白光，色度座標為(x = 0.32, y = 0.32)。

A white-light illumination panel with high brightness using two-wavelength white organic light-emitting diodes (WOLEDs) was deposited on Indium tin oxide (ITO) substrate by high vacuum evaporator system. In our study, the device configurations of WOLEDs using multilayer structure were ITO/m-MTDATA (550 Å)/NPB (400 Å)/TDAF : Rubrene (M Å , red emitting)/undoped TDAF (100-M Å , blue emitting)/TPBI (400 Å)/Mg : Ag (1500 Å) with various thickness of red dopant, providing a blue-light emission from emitting layer.
Effect of the thickness of emitting layer on the optoelectronic performance of WOLEDs has been systematically investigated. Evidence shows that the optimal WOLED has the quite stable CIE coordinates performance. It was suggested that the created excitons under different operating currents could be effectively confined within a short distance at the junction of TDAF : Rubrene / undoped TDAF. The optimal white-light OLED with CIE coordinate of (x = 0.32, y = 0.32) was realized by using a 10-Å-thick TDAF : Rubrene layer associating a 90-Å-thick undoped TDAF layer.

Publications and Preprints I
ABSTRAT (in Chinese) II
ABSTRAT (in English) IV
Acknowledgment VI
CONTENTS VII
Figure Caption IX
Table Caption X

Chapter 1. Introduction
1.1 Background 1
1.2 Motivation 3
1.3 Organization of This Thesis 4

Chapter 2. Basic Concept and Experiment Procedure
2.1 Basic concepts 5
2.1.1 Electroluminescence in Organic Materials 5
2.1.2 Charge Carrier Injection and Transport 5
2.1.3 Luminescent Mechanisms of Organic Materials 7
2.2 Experiment Procedure 9
2.2.1 ITO Substrate Etching and Cleaning 9
2.2.2 Deposition of Organic Thin Film and Electrodes 10
2.2.3 Measurement 10

Chapter 3. A Study of White-light Illumination Characteristics of Two-wavelength White Organic Light Emitting Diodes
3.1 Introduction 12
3.2 Experiment 14
3.3 Results and Discussions 15
3.4 Conclusions 16

Reference
Figure
Table
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