Thin Film Passivation Characteristics in OLED Using In-situ Passivation

다국어 초록 (Multilingual Abstract)

In this study, the fabrication and the characteristic analyses of OLED using in-situ passivation are investigated.
OLEDs represent a disadvantage in decreasing its life due to the degradation caused by the penetration of moisture and oxygen. After the fabrication of OLED, an in-situ passivation method for inorganic thin films is developed. A process that uses PECVD method which can apply a vapor deposition process at room temperature is also developed.
Changes in the degradation and electric characteristics of OLEDs are also analyzed by applying SiO2 and SiNx thin films to OLED as a passivation layer. By applying the fabricated thin film to OLEDs as a passivation layer, the moisture penetration in a single layer film is ensured below 1×10-2 g/m2.day. This leads to the improvement of such degradation characteristics in the application of multilayer films.

참고문헌 (Reference)

1 H. Lifka, 35 : 1384-, 2004

2 J. S. Lewis, "Thin-Film Permeation-BarrierTechnology for Flexible Organic Light-Emitting Devices" 10 (10): 45-, 2004

3 Manju Rajestwaran, "Structural, thermal and spectralchracterization of the different crystalline forms of Alq3, anelectroluminescent material in OLED technology" 28 : 835-, 2009

4 P. E. Burrows, "Reliability and degradation oforganic light emitting devices" 65 (65): 2923-, 1994

5 Zoran D. Popovic, "Reliability and Degradationof Small Molecule-Based Organic Light-Emitting Devices(OLEDs)" 8 (8): 2002

6 Kiran T. Kamtekar, "Recent advances in white organic light-emitting materials anddevices (WOLEDs)" 22 : 572-, 2010

7 M. Vogt, "Plasma-deposited passivation layersfor moisture and water protection" 74 : 676-, 1995

8 이칠원, "Organic light-emitting device using new distyrylarylene host materials" Elsevier BV 157 (157): 421-426, 200706

9 C. W. Tang, "Organic electroluminescent diodes" 51 : 913-, 1987

10 H. Lin, "Moisture-resistant properties of SiNx filmsprepared by PECVD" 333 : 71-, 1998

11 G. L. Graff, "Machanisms ofvapor permeation through multilayer barrier films: Lag timeversus equilibrium permeation" 96 (96): 1840-, 2004

12 Chan-Ching Chang, "Highly power efficient organic light-emitting diodes with ap-doping layer" 89 : 253504-, 2006

13 J. H. Seo, "Highly efficient white organic light-emittingdiodes using two emitting materials for three primary colors(red, green, and blue)" 90 : 203507-, 2007

14 Yiru Sun, "High-efficiency white organiclight emitting devices with three separate phosphorescentemission layers" 91 : 263503-, 2007

15 J. H. Seo, "Blue organic light-emitting diodes with efficient hostdopantenergy level alignment" 11 : S356-, 2011