Micro lens design for efficiency improvement of red organic light-emitting diode

被引：1

作者：

Ki, Hyun-Chul ^{[1
]}

Kim, Doo-Gun ^{[1
]}

Kim, Seon-Hoon ^{[1
]}

Jung, U-Ra ^{[1
]}

Kim, Sang-Gi ^{[2
]}

Hong, Kyung-Jin ^{[3
]}

机构：

[1] Photon Fus Syst Res Ctr, Korea Photon Technol Inst, Kwangju 500779, South Korea

[2] Linkline I&C, Kwangju 500470, South Korea

[3] GwangJu Univ, Dept New Reclaimed Energy Engn, Kwangju 503703, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2012年 / 61卷 / 09期

关键词：

OLED; Micro lens; Out-coupling; Efficiency; EMISSION;

D O I：

10.3938/jkps.61.1532

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have proposed a micro lens to improve the luminance of red organic light-emitting devices (ROLEDs). The micro lenses were applied on the glass/indium tin oxide (ITO)/OLED. The size, thickness and diameter of micro lenses were calculated by using FDTD (finite-difference timedomain) method. Simulations were performed for 5 A mu m and 10 A mu m sized. The thickness and the gap of the micro lens were both 1 A mu m. The material of the micro lenses was silicon dioxide. The highest luminance of an OLED applied with a micro lens was 11,185 cd/m(2), at on approval voltage of 14.5 V, The efficiency of the device with a micro lens increased by 3 times compared to that of the device with no micro lens.

引用

页码：1532 / 1535

页数：4

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