Substrate thermal conductivity effect on heat dissipation and lifetime improvement of organic light-emitting diodes
نویسندگان
چکیده
improvement of organic light-emitting diodes Seungjun Chung, Jae-Hyun Lee, Jaewook Jeong, Jang-Joo Kim, and Yongtaek Hong Department of Electrical Engineering and Computer Science, Inter-University Semiconductor Research Center, Seoul National University, San 56-1 Sillim-9-Dong, Gwanak-Gu, Seoul 151-744, Republic of Korea Department of Material Science and Engineering, Center for OLED, Seoul National University, San 56-1 Sillim-9-Dong, Gwanak-Gu, Seoul 151-744, Republic of Korea
منابع مشابه
Thin-film Encapsulation of Organic Light-Emitting Diodes Using Single and Multilayer Structures of MgF2, YF3 and ZnS
In this research, the lifetime of green organic light emitting diodes (OLEDs) is studied using four passivation layers. To encapsulate the OLEDs, MgF2, YF3, composed of alternating MgF2/ZnS and YF3/ZnS layers were grown by thermal vacuum deposition. Measurements show that the device lifetime is significantly improved by using YF3 and ZnS as passivation layers. However, diodes encapsulated by Mg...
متن کاملStudy of temperature sensitive optical parameters and junction temperature determination of light-emitting diodes
Related Articles Causes of driving voltage rise in phosphorescent organic light emitting devices during prolonged electrical driving Appl. Phys. Lett. 101, 173502 (2012) Effect of diamond like carbon layer on heat dissipation and optoelectronic performance of vertical-type InGaN light emitting diodes Appl. Phys. Lett. 101, 171102 (2012) A new model for optimization of organic light-emitting dev...
متن کاملThermal distribution of multiple LED module
Light-emitting diode (LED) is an electronic device with high heat flux. The simulation and analysis of the heat dissipation play an important role in the improvement of performance and design of LEDmodule. In this paper, a thermal model was developed using ANSYS software to simulate the temperature distribution of LED module. The effect of thermal conductivity of MCPCB (metal-core printed circu...
متن کاملVertical Thinking in Blue Light Emitting Diodes: GaN-on-Graphene Technology
In this work, we show that a 2D cleave layer (such as epitaxial graphene on SiC) can be used for precise release of GaNbased light emitting diodes (LEDs) from the LED-substrate interface. We demonstrate the thinnest GaN-based blue LED and report on the initial electrical and optical characteristics. Our LED device employs vertical architecture: promising excellent current spreading, improved he...
متن کاملHeat dissipation performance of a high-brightness LED package assembly using high-thermal conductivity filler.
This paper presents a thermal analysis and experimental validation of natural convective heat transfer of a high-brightness light-emitting diode (LED) package assembly. The substrate materials used in the LED package assembly were filled and doped using boron nitride (BN) filler. The thermal conductivity of the BN-filled substrate was measured. The temperature distribution and heat flow of the ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2009