نتایج جستجو برای: light emitting device
تعداد نتایج: 1043552 فیلتر نتایج به سال:
Management of periungual wart is a great challenge, especially when there is subungual extension. The major cause of recurrence of wart is improper clinical assessment of its extent and not directing therapy against the entire wart. This difficulty of ascertaining its extent could be overcome with this finger-shaped red light emitting diode device. Red light in the device penetrates the thick p...
In this study, we report the fabrication and characterization of organic/inorganic hybrid polymer light emitting diodes (PLEDs) made with ZnS-capped CdSe core/shell type nanocrystals and a light-emitting polymer poly[2-phenyl-3-(9,9-dihexylfluoren-2-yl)-1,4-phenylene vinylene]-co-[2-methoxy-5-(2'-ethylhexyloxy)-1,4-phenylene vinylene]. The device using pristine polymer as active layer emitted y...
Dual-functioning displays, which can simultaneously transmit and receive information and energy through visible light, would enable enhanced user interfaces and device-to-device interactivity. We demonstrate that double heterojunctions designed into colloidal semiconductor nanorods allow both efficient photocurrent generation through a photovoltaic response and electroluminescence within a sing...
In this work, we fabricated the small molecule green fluorescent bottom-emission organic light emitting device (OLED) with the configuration of glass substrate/indium tin oxide (ITO)/Copper Phthalocyanine (CuPc) 25 nm/ N,N’-di(naphthalen-1-yl)-N,N’-diphenyl-benzidine (NPB) 45 nm/ tris(8-hydroxyquinoline) aluminium (Alq3) 60 nm/ Lithium fluoride (LiF) 1 nm/Aluminum (Al) 100 nm where CuPc and NPB...
Current density [mA/cm] L um in an ce [c d/ m 2 ] Voltage [V] Over last several years, light-emitting devices based on organic materials have been attractive research subjects because of their potential applicability to large size flat panel displays and solid-state lighting with low fabrication costs and easy manufacturing processes. Recently, the topic of white light generation from singlelay...
Silicon-based. light-emitting devices (LED's) should find numerous uses in optoelectronics. For example, the integration of silicon LED's with silicon microelectronics could lead to reliable and inexpensive optical displays and optical interconnects. Until recently, however, it had not been possible to obtain efficient room-temperature luminescence from silicon. The demonstration in 1990 that a...
In this latter, the authors demonstrated a phosphorescent organic light-emitting device OLED with a lower driving voltage and a longer operation lifetime based on 2,2 -bis 5-phenyl-21,3,4 oxadazolyl biphenyl, an oxadiazole OXD derivative, as the host of the emitting layer doped with a common green-emitting phosphorescent dopant, fac-tris 2-phenylpyridine iridium Ir ppy 3 . Rather than an electr...
We have designed and fabricated two-color infrared light emitting diode (LED) emitting in the wavelength regions of 3–4 lm and 5–10 lm. The interband cascade (IC) LED device was grown on n-type GaSb substrate and has 30 cascaded stages for the long-wave infrared (LWIR) and 15 cascaded stages for the mid-wave infrared (MWIR) emission bands. The two active regions are separated by a 0.5 lm thick ...
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