Zobrazeno 1 - 10
of 101
pro vyhledávání: '"June O. Song"'
Publikováno v:
IEEE Photonics Journal, Vol 5, Iss 6, Pp 8200708-8200708 (2013)
A high-brightness GaN-based vertical light-emitting diode (VLED) was demonstrated by introducing a large-area low-cost direct printing process. A hexagonally close-packed micrometer convex array was fabricated on the n-GaN top layer of the VLED by di
Externí odkaz:
https://doaj.org/article/98c9139964594eeea876d970243ee07d
Autor:
June O. Song, Hwan Hee Jeong, Hiroshi Amano, Ho Young Kim, Ki Seok Kim, Tae Yeon Seong, Lim Chang Man, Jeong Tak Oh
Publikováno v:
ECS Journal of Solid State Science and Technology. 8:Q165-Q170
We investigated the effect of via-holes in the lead-frame on the reliability of blue flip-chip light-emitting diodes (FCLEDs). For bonding, conventional Sn-Ag(3.0%)-Cu(0.5%) solder (SAC) and Ag sintered paste were adopted. Lateral LED, conventional F
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::50782eaa4ab29aad38d13f0247cdc68a
https://doi.org/10.1149/2.0171909jss
https://doi.org/10.1149/2.0171909jss
Autor:
Won Jung Kim, Gyu Hyeong Bak, Hwan Hee Jeong, June O. Song, Sun Woo Oh, Suk Bum Yoon, Hyun Ho Sung, Tae Yeon Seong
Publikováno v:
ECS Transactions. 85:67-72
Light-emitting diodes (LEDs) have been widely applied for backlight unit for displays, general lighting, and automotive illumination because they have a high light efficiency and long life time, and are environmentally friendly. These diverse applica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68e14f7fe876f3854df7437004449a17
https://doi.org/10.1149/08507.0067ecst
https://doi.org/10.1149/08507.0067ecst
Autor:
Mojtaba Asadirad, June-o Song, Jeong Tak Oh, Shahab Shervin, Keon Hwa Lee, Seung Kyu Oh, Jae-Hyun Ryou, Yong-Tae Moon
Publikováno v:
IEEE Photonics Technology Letters. 28:1956-1959
Demonstrated are visible GaN-based light-emitting diodes (LEDs) on economical large-area Si substrates using an advanced device and packaging architecture to improve optical output power, while reducing manufacturing costs. The process employs thin-f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fa278b6330a92eeacc21d8e851f217e3
https://doi.org/10.1109/lpt.2016.2580039
https://doi.org/10.1109/lpt.2016.2580039
Autor:
Won Jung Kim, June O. Song, Taek Kyun Kim, Suk Bum Yoon, Hwan Hee Jeong, Tae Yeon Seong, Sung Ho Kim
Publikováno v:
Optics express. 26(22)
We investigated the effect of phosphor deposition methods on the correlated color temperature (CCT), luminous flux and thermal characteristics of packaged white light-emitting diodes (WLEDs) for use in mobile display products. For both the samples, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4ff865790bb8b771bb236440b397daa3
https://pubmed.ncbi.nlm.nih.gov/30470036
https://pubmed.ncbi.nlm.nih.gov/30470036
Autor:
Jeong Tak Oh, Dae Sung Kang, Chan Keun Park, Hwan Hee Jeong, Jae Woong Han, Yong-Tae Moon, Youn Joon Sung, Tae Yeon Seong, June O. Song, Myung Hoon Jung
Publikováno v:
Optics express. 26(5)
We demonstrated the growth of crack-free high-quality GaN-based UV vertical LEDs (VLEDs) (λ = 365 nm) on 6-inch sapphire substrates by using an ex-situ sputtered AlN nucleation layer (NL) and compared their performance with that of UV VLEDs with an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7afe9aa70c32375943168658f8a79203
https://pubmed.ncbi.nlm.nih.gov/29529718
https://pubmed.ncbi.nlm.nih.gov/29529718
Autor:
Sun Kyung Kim, Myunghoon Jung, Ki-Young Song, Daesung Kang, June O. Song, Hwan-Hee Jeong, Tae Yeon Seong, Da Som Kim, Eunsil Choi
Publikováno v:
ECS Journal of Solid State Science and Technology. 5:Q1-Q6
We investigated the effects of in situ GaN and sputtered AlN nucleation layers on the output power of GaN-based blue (445 nm) LEDs on patterned sapphire substrate (PSS) and planar sapphire substrates. Both the PSS LEDs and planar LEDs showed the same
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::39f76434c206c0ff0aa4da89c280cff4
https://doi.org/10.1149/2.0011602jss
https://doi.org/10.1149/2.0011602jss
Publikováno v:
Materials Science in Semiconductor Processing. 31:209-213
In this work, simple n-type electrode structures were used to enhance the electrical and optical performances of fully packaged commercially mass-produced vertical-geometry light-emitting diodes (VLEDs). The forward bias voltage of the VLED with a Y-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ef974e4ea3c1a4e770457e13a2a7cc37
https://doi.org/10.1016/j.mssp.2014.11.043
https://doi.org/10.1016/j.mssp.2014.11.043
Publikováno v:
Materials Science in Semiconductor Processing. 31:153-159
The effects of the n-contact design and chip size on the electrical, optical and thermal characteristics of thin-film vertical light-emitting diodes (VLEDs) were investigated to optimize GaN-based LED performance for solid-state lighting applications
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d4896c88d735d171b8e50466a7180a3a
https://doi.org/10.1016/j.mssp.2014.11.038
https://doi.org/10.1016/j.mssp.2014.11.038
Publikováno v:
Microwave and Optical Technology Letters. 56:2881-2884
A multiband power amplifier (MBPA) with a switch-based reconfigurable output matching network is presented for long-term evolution handset applications. The MBPA is designed in a dual-path configuration to improve efficiency in two different power le
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::810ec359a84d5f4ece8966b7f1a554f9
https://doi.org/10.1002/mop.28730
https://doi.org/10.1002/mop.28730