Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Jaehyeok Park"'
Autor:
Sangjin Min, Won-Jin Choi, Dong Hwan Kim, Keuk Kim, Jaehyeok Park, Han-Youl Ryu, Jong-In Shim, Dong-Soo Shin
Publikováno v:
AIP Advances, Vol 14, Iss 10, Pp 105201-105201-4 (2024)
Red micro-light-emitting diodes (μ-LEDs) with AlGaInP/GaInP multiple quantum wells are fabricated with an oxide perimeter region to control the current injection path. When the values of the external quantum efficiency (EQE) of the 30 μm-size μ-LE
Externí odkaz:
https://doaj.org/article/7c1f442fe70c4de3bd3b63373d5269fe
Publikováno v:
Electronics Letters, Vol 59, Iss 23, Pp n/a-n/a (2023)
Abstract The ideality factor of a diode gives the information on the current conduction or recombination processes occurring inside the device. The ideality factor obtained from the electrical current–voltage (I–V) characteristics by the conventi
Externí odkaz:
https://doaj.org/article/c0109b33a7aa4987aa8216361588e01d
Autor:
Yeseung Park, Kanghee Lee, Jaehyeok Park, Jong Bin Bae, Sang-Su Kim, Do-Won Kim, Se Joon Woo, Seunghyup Yoo, Ki Woong Kim
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-12 (2022)
Abstract With aging, optimal parameters of flickering light stimulation (FLS) for gamma entrainment may change in the eyes and brain. We investigated the optimal FLS parameters for gamma entrainment in 35 cognitively normal old adults by comparing ev
Externí odkaz:
https://doaj.org/article/da88eb60c795436691ac7eb4aba2c2d7
Autor:
Kanghee Lee, Yeseung Park, Seung Wan Suh, Sang-Su Kim, Do-Won Kim, Jaeho Lee, Jaehyeok Park, Seunghyup Yoo, Ki Woong Kim
Publikováno v:
Scientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
Abstract Although light flickering at 40 Hz reduced Alzheimer’s disease (AD) pathologies in mice by entraining gamma waves, it failed to reduce cerebral amyloid burden in a study on six patients with AD or mild cognitive impairment. We investigated
Externí odkaz:
https://doaj.org/article/e90ac9f623694a3fa1aa7db34594f98c
Publikováno v:
Advanced Photonics Research, Vol 2, Iss 9, Pp n/a-n/a (2021)
While organic light‐emitting diodes (OLEDs) have seen huge success as light sources in high‐end displays, efforts are being made to extend their spectral coverage beyond the visible region. Among such endeavors, the development of ultraviolet (UV
Externí odkaz:
https://doaj.org/article/b4e78451d79e4340aec503b5514e3eda
Autor:
Chanhyung Park, Jeongmin Shin, Sanmun Kim, Songju Lee, Juho Park, Jaehyeok Park, Sehong Park, Seunghyup Yoo, Min Seok Jang
Publikováno v:
Optics Express.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76d255a011c15503c7dc91adafa9cc5d
https://doi.org/10.1364/oe.489758
https://doi.org/10.1364/oe.489758
Publikováno v:
ACS Photonics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fd61b1a7e0502ea03ff7b26b225cccb
https://doi.org/10.1021/acsphotonics.3c00017
https://doi.org/10.1021/acsphotonics.3c00017
Autor:
Hyuk Joo Lee, Seunghyup Yoo, Jung Kyung Hong, Jun Seok Ahn, Eunyoung Lee, Hanul Moon, Sunhyoung Koo, Tae Kim, Jaehyeok Park, In-Young Yoon
Publikováno v:
European journal of clinical nutrition.
Many people in modern society have insufficient exposure to ultraviolet B (UVB) sunlight, which may lead to vitamin D deficiency. We aimed to investigate the effect of a proto-type wearable light-emitting diode (LED) device emitting UVB light on seru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bce564054cd9d0d3024468f26294bec9
https://pubmed.ncbi.nlm.nih.gov/36418536
https://pubmed.ncbi.nlm.nih.gov/36418536
Autor:
Tae Hee Han, Su Hun Jeong, Kai Zhu, Matthew O. Reese, Jaehyeok Park, Fei Zhang, Joo Sung Kim, Tae-Woo Lee, Seunghyup Yoo, Min-Ho Park
Publikováno v:
Joule. 4:1206-1235
Summary Metal halide perovskites (MHPs) are being widely studied as a light-absorber for high-efficiency solar cells. With efforts being made throughout the globe, the power conversion efficiency of MHP solar cells has recently soared up to 25.2%. MH
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e2300bc2d70271a70ffbac23f3a48ddc
https://doi.org/10.1016/j.joule.2020.04.007
https://doi.org/10.1016/j.joule.2020.04.007