Full color emission

Fig. 24 Discovery of novel fluorophore, l,2-dihydropyrrolo[3,4-(3]indolizin-3-one, using a combinatorial approach (a) Synthetic schemes of fluorescent core skeleton (b) Collected emission spectra of selected compounds covering full-color emission wavelength (c) Table of photophysical properties of all fluorescent compounds. All the photophysical properties were measured in DCM (dichloromethane). Reproduced with permission from [92]...

The spiro compound 61 has been prepared and evaluated as a new charge transport material <07AM4049>. It has also been demonstrated that several 3-boryl-2,2 -bithiophene systems, for instance 62, may have potential as full-color emissive materials <07AG(E)4273>. The donor-acceptor system 5-diphenylamino-5 -... 

Energy transfer, either within the oligomer or to neighboring groups, governs the efficiency of the full-color emission. Fluorene-ethynylene-pyrene ter-oligomers were synthesized and characterized to demonstrate that pyrene s... 

This study attempts to identify the experimental parameters required to achieve the full-colored emission under accelerated electrons (cathode ray tube) and ultraviolet light excitations for ZnGa204 phosphor with graded and non-stoichiometric composition. 

Silicon-based oxynitride and nitride phosphors have encouraging luminescent properties (excitability by blue light, high conversion efficiency, and the possibility of full color emission), as well as a low thermal quenching, high chemical stability, and high potential for use in white LEDs [288, 289]. 

Zhang Y, Wu ZJ, Geng DL, Kang XJ, Shang MM, Li XJ, Lian HZ, Chen ZY, Lin J (2014) Full color emission in ZnGa204 simultaneous controlof the spherical morphology, luminescent, and electric properties via hydrothermal approach. Adv Funct Mater 10 1002... 

Because of their favorable size and weight considerations, PDF systems are well suited to large screen (40-in. diagonal) full-color emissive display applications. 

In the sol-gel process, various concentrations of quinoline polymers in formic acid solutions were mixed with tetraethyl orfiiosilicate (TEOS) at room tenqierature. The gelation of the solutions occurred rapidly (< IS minutes in most cases). The gels were then heated at 40-50°C to complete the TEOS polymerization. When the resulting composite materials were excited by UV, full-colored emissions spanning the entire visible range with high... 

Electron-Deficient Polymers - Luminescent Transport Layers 16 Other Electron-Deficient PPV Derivatives 19 Electron-Deficient Aromatic Systems 19 Full Color Displays - The Search for Blue Emitters 21 Isolated Chromophores - Towards Blue Emission 21 Comb Polymers with Chromophores on the Side-Chain 22 Chiral PPV - Polarized Emission 23 Poly(thienylene vinylene)s —... 

Kim E, Koh M, Ryu J, Park SB (2008) Combinatorial discovery of full-color-tunable emissive fluorescent probes using a single core skeleton, 1, 2-dihydropyrrolo[3, 4-P]indolizin-3-one. J Am Chem Soc 130 12206-12207... 

Apart from the tunable color emission covering the full visible range, there are several other aspects supporting the interest in PTs for PLEDs. PTs are examples of classical conjugated polymers with intrinsic one-dimensionality of the polymer chain. Alignment can induce anisotropy in macroscopic properties such as electron transport or optical properties. Polarized... 

A bewildering array of materials has been used as emitters in SMOLEDs since this early work on Alq3. In the following sections, we will present a brief review of host-guest emitter materials and give a perspective description of all the current state-of-the-art small molecule materials for emission at the three primary colors needed for full-color display applications. 

Quantum dots represent three-dimensional confinement in semiconductor materials. The optical spectroscopy of lanthanides-doped III-V semiconductor QDs has been observed to be very different from the bulk or thick film. For example, carrier confinement in QDs can strongly enhance the radiative quantum efficiency of the lanthanide emission, which thus makes lanthanide-doped III-V semiconductor QDs very promising candidates for full-color LEDs. It is notoriously difficult to dope lanthanide into III-V semiconductor nanocrystals by wet chemical synthesis methods. To date, most of these samples were prepared either by MBE, ion implantation or magnetron co-sputtering. 

OLEDs are nowadays the most important type of light source for artificial lighting, making them potential candidates in the development of full-color flat panel display devices. Challenging problems to be addressed are emission color, emission efficiency and device lifetime. The emission color problem results from the broad emission bands exhibited by electroluminescent devices containing organic emitting layers, since pure and sharp emission bands from these materials, a requisite for display applications, are... 

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