منابع مشابه
Novel carbazole/fluorene hybrids: host materials for blue phosphorescent OLEDs.
[reaction: see text] A series of carbazole/fluorene (CBZm-Fn) hybrids were effectively synthesized through Friedel-Crafts-type substitution of the carbazole rings. These compounds were thermally and morphologically stable host materials for OLED applications. Efficient blue phosphorescent OLEDs were obtained when employing CBZ1-F2 as the host and FIrpic as the guest.
متن کاملGaN photonic-crystal surface-emitting laser at blue-violet wavelengths.
Shorter-wavelength surface-emitting laser sources are important for a variety of fields, including photonics, information processing, and biology. We report on the creation of a current-driven blue-violet photonic-crystal surface-emitting laser. We have developed a fabrication method, named "air holes retained over growth," in order to construct a two-dimensional gallium nitride (GaN)/air photo...
متن کاملStrong room-temperature blue-violet photoluminescence of multiferroic BaMnF4.
BaMnF4 microsheets have been prepared using a hydrothermal method. Strong room-temperature blue-violet photoluminescence has been observed (an absolute luminescence quantum yield of 67%) with two peaks located at 385 nm and 410 nm. More interestingly, photon self-absorption phenomenon has been observed, leading to an unusual abrupt decrease in the luminescence intensity at a wavelength of 400 n...
متن کاملBrain Responses to Violet, Blue, and Green Monochromatic Light Exposures in Humans: Prominent Role of Blue Light and the Brainstem
BACKGROUND Relatively long duration retinal light exposure elicits nonvisual responses in humans, including modulation of alertness and cognition. These responses are thought to be mediated in part by melanopsin-expressing retinal ganglion cells which are more sensitive to blue light than violet or green light. The contribution of the melanopsin system and the brain mechanisms involved in the e...
متن کاملStrong Blue and Violet Photo- and Electroluminescence from Ge- and Si-Implanted Silicon Dioxide
The photoluminescence (PL) and electroluminescence (EL) properties of Ge-implanted SiO2 films thermally-grown on a Si substrate have been investigated and compared to those of Si-implanted SiO2 films. It is found that the blue-violet PL from both Si and Ge-rich layers reaches a maximum after annealing at 500 C for 30 min. The PL and EL from Ge-implanted SiO2 are distinctly higher than that from...
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ژورنال
عنوان ژورنال: J. Chem. Soc., Trans.
سال: 1920
ISSN: 0368-1645
DOI: 10.1039/ct9201701542