Results 31 to 40 of about 1,029 (198)
User acceptance studies for LED office lighting: light spectrum and correlated colour temperature [PDF]
, 2015 During the last decade, lighting technology based on light-emitting diodes (LEDs) has advanced rapidly and is paving the way for the application of LED lighting in offices. Two experiments were carried out to study user preference for different LED light
Islam, Mohammad Shahidul
core +1 more source
Band-Engineered Structural Design of High-Performance Deep-Ultraviolet Light-Emitting Diodes
Crystals, 2021 In this study, systematic structural design was investigated numerically to probe into the cross-relating influences of n-AlGaN layer, quantum barrier (QB), and electron-blocking layer (EBL) on the output performance of AlGaN deep-ultraviolet (DUV) light-
Jih-Yuan Chang +5 more
doaj +1 more source
, 2022 We report on the illustration of the novel electron blocking layer (EBL) free AIlnN nanowire light-emitting diodes (LED) with a single-quantum well (SQW) operating in the deep ultraviolet (DUV) wavelength region (sub-250 nm).
Das, Samadrita +4 more
core +1 more source
Nanoscale Research Letters, 2019 AlGaN-based deep ultraviolet (DUV) light-emitting diodes (LEDs) suffer from electron overflow and insufficient hole injection. In this paper, novel DUV LED structures with superlattice electron deceleration layer (SEDL) is proposed to decelerate the ...
Jiahui Hu +9 more
doaj +1 more source
Angewandte Chemie, EarlyView.H2O2‐directed solvate engineering reorganizes ∞[4HP] (4‐hydroxypyridine) chains from a crossed arrangement into a nearly parallel packing through strengthened hydrogen‐bonding interactions. The resulting peroxide‐containing crystal, 4HP·H2O2, exhibits a solar‐blind UV cutoff edge (278 nm) and giant birefringence (0.609 @ 546 nm). This work demonstrates
Yang Li, Congcong Jin, Kang Min Ok
wiley +2 more sources
Scientific Reports, 2021 Smart integrative lighting systems aim to support human health and wellbeing by capitalising on the light-induced effects on circadian rhythms, sleep, and cognitive functions, while optimising the light’s visual aspects like colour fidelity, visual ...
Babak Zandi +5 more
doaj +1 more source
, 2022 Reliable disinfection and sterilization technologies are needed to deal with the various infectious diseases spreading around the world. Furthermore, bacteria that are difficult to eliminate by ordinary disinfection are also a problem in the medical ...
Yoshitaka Goto (5549273) +6 more
core +1 more source
IEEE Photonics Journal, 2017 The photoelectric properties and physical mechanism of AlGaN-based deep ultraviolet light emitting diodes (DUV-LEDs) with the superlattice p-type doping layer (PSL) are studied numerically and compared with the Al-composition (50%) conventional p ...
Qianying Si +4 more
doaj +1 more source
Advanced Science, 2020 Efficient and low‐cost production of high‐quality aluminum nitride (AlN) films during heteroepitaxy is the key for the development of deep ultraviolet light‐emitting diodes (DUV‐LEDs).
Hongliang Chang +14 more
doaj +1 more source
Efficacy of 265-nm ultraviolet light in inactivating infectious SARS-CoV-2
Journal of Photochemistry and Photobiology, 2021 Although, Low-pressure (LP) mercury lamps that emit wavelengths of around 254 nm have been widely applied as ultraviolet (UV) light devices for decontamination of microorganisms, they have raised environmental concerns due to their mercury content ...
Hiroshi Shimoda +3 more
doaj +1 more source