Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Ju Hyun Hwang"'
Autor:
Ju Hyun Hwang, Young Nam Kwon, Joon Sung Shin, Jae Yeon Lee, Yoobin Choi, Yoonji Lee, Sung Min Kim, Soo-Hee Choi
Publikováno v:
Medicine
Although both multiple sclerosis (MS) and neuromyelitis optica (NMO) are demyelinating diseases, their psychiatric disturbances may differ given differences in the neurological manifestations. We used subjective and objective measurements to compare
Publikováno v:
Nanoscale. 8:4113-4120
This paper reports organic light-emitting diodes (OLEDs) with improved light extraction fabricated by embedding an extremely low-index photonic crystal (LIPC) layer. The LIPC layer increases the optical efficiency through the reduced wave-guide mode
Autor:
Ju Hyun Hwang, Hong Seok Jo, Sun Gyu Jung, Yong Sub Shim, Young Wook Park, Byeong Kwon Ju, Seongpil An, Cheol Hwee Park, Hyun Jun Lee, Sam S. Yoon, Kyu Nyun Kim
Publikováno v:
ACS Applied Materials & Interfaces. 7:68-74
We fabricated a PAN (polyacrylonitrile) NF (nanofiber)-embedded composite layer to adjust the light-control layer in light-emitting-diode (LED) and organic-light-emitting-diode (OLED) lighting systems with unique optical characteristics, for effectiv
Autor:
Yong Sub Shim, Byeong Kwon Ju, Dong Jun Lee, Chan Hyuk Park, Sun-Gyu Jung, Bong Han Bae, Young Wook Park, Cheol Hwee Park, Ju Hyun Hwang
Publikováno v:
SID Symposium Digest of Technical Papers. 47:1717-1719
Highly enhanced performance OLEDs have been demonstrated by high refractive index nanostructure (HRIN). The HRIN scatters the waveguided light and extracts the light into the air. From these properties, the enhancement ratio of the devices with HRIN
Autor:
Hyun Jun Lee, Sun Gyu Jung, Byeong Kwon Ju, Cheol Hwee Park, Yong Sub Shim, Kyung Bok Choi, Kyu Nyun Kim, Young Wook Park, Ju Hyun Hwang
Publikováno v:
Advanced Functional Materials. 24:6414-6421
In this study, organic light-emitting diodes (OLEDs) with enhanced optical properties are fabricated by inserting a nanosized stripe auxiliary electrode layer (nSAEL) between the substrate and an indium tin oxide (ITO) layer. This design can avoid th
Autor:
Kyung Bok Choi, Hyun Jun Lee, Young Wook Park, Tae Hyun Park, Ju Hyun Hwang, Jung Ho Park, Bo Yeon Hwang, Byeong Kwon Ju, Se Joong Shin
Publikováno v:
Organic Electronics. 15:111-117
Out-coupling enhanced organic light-emitting diodes (OLEDs) with micro-lens arrays and a nano-scale periodic light-extraction structure—a photonic crystal (PC)—utilizing laser interference lithography (LIL) are demonstrated. Generally, PC-based O
Autor:
Cheol Hwee Park, Kyu Nyun Kim, Sun Gyu Jung, Yong Sub Shim, Young Wook Park, Byeong Kwon Ju, Ju Hyun Hwang
Publikováno v:
Nanotechnology. 28(4)
Despite their generally good performance, photonic crystal (PC)-based organic light-emitting diodes (OLEDs) encounter a serious spectral distortion problem. In this study, we obtained spectral-distortion-free PC-based OLEDs by lowering the pitch (per
Autor:
Ju Hyun Hwang, Bong Han Bae, Sun Gyu Jung, Cheol Hwee Park, Yong Sub Shim, Chan Hyuk Park, Kyu Nyun Kim, Young Wook Park, Dong Jun Lee, Byeong Kwon Ju, Hyun Jun Lee
Publikováno v:
SID Symposium Digest of Technical Papers. 46:1647-1649
A hybrid buffer layer with superior plasma protection ability and high injection efficiency was developed. The hybrid buffer layer composed by dual-layered structure of HATCN/MoO3 enhances hole-injection efficiency and protects organic layers under t
Autor:
Ju Hyun Hwang, Cheol Hwee Park, Young Wook Park, Byeong Kwon Ju, Sun-Gyu Jung, Yong Sub Shim, Kyu Nyun Kim, Hyun Jun Lee
Publikováno v:
SID Symposium Digest of Technical Papers. 46:1699-1701
Organic light emitting diodes (OLEDs) with nanoscale corrugation for light extraction (NCLE) enhanced the current efficiency and power efficiency. The haze of the nanoscale corrugation for light extraction is comparable to that of bare glass. Further
Autor:
Sun Gyu Jung, Chan Hyuk Park, Byeong Kwon Ju, Cheol Hwee Park, Bong Han Bae, Kyu Nyun Kim, Hyun Jun Lee, Young Wook Park, Ju Hyun Hwang, Dong Jun Lee, Yong Sub Shim
Publikováno v:
SID Symposium Digest of Technical Papers. 46:1704-1706
In this study, we report the thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs) having enhanced efficiency. We optimized TADF OLED by HTL, ETL materials and thickness. An enhanced power efficiency, current efficienc