[PDF] Top 20 Anisotropy of light extraction from two-dimensional photonic crystal light-emitting diodes

... Republic of China 共Received 8 August 2007; accepted 4 September 2007; published online 20 September 2007兲 Anisotropic light extraction of photonic crystal 共PhC兲 ... See full document

... anisotropic light extraction in the azimuthal direction of PhC ...images of the anisotropy in the azi- muthal direction are obtained using annular structure with triangular lattice and ... See full document

... anisotropic light extraction dependence on the orientations of the PhC lattice and lattice constants of 2D PhC GaN LED ...images of the anisotropy in the azimuthal direction are ... See full document

... investigation of the directionality in the far-field pattern and light extraction enhancement in collected cone were performed in GaN-based film-transferred photonic crystal 共PhC兲 ... See full document

... properties of the GaN blue PhC LEDs were measured at room temperature using a scanning optical microscopic system, the same as in ...observed light emission is from the light propagation along ... See full document

... using two dimensional (2D) PhCs 11 on non-polar or semi-polar LEDs with focus, how- ever, not on the performance of polarization ...face of the a-plane LED. We match the E//m (primary polar- ... See full document

... Directional light enhancement behavior including collimated far-field patterns sensitively depending on both photonic crystal (PhC) lattice constant and GaN thickness from GaN film-transferred ... See full document

... modes extraction based on the Bragg’s diffraction via PhC effect in the GaN PhC ...evolution of the collinear and non-collinear ...the light enhancement of ...102.3° from GaN PhC FT-LED ... See full document

... influence of the PQC structure on the devices, we also measured the light output radiation patterns of the compared LEDs packaged in TO cans at a driving current of 20 mA, as shown in ...data ... See full document

... GaN-based light-emitting diodes ...replacement of incandescent, fluorescent, Hg and Xe lamps for general lighting, back lighting in large liquid-crystal displays, and vehicle head lamps ... See full document

... distribution of III–nitride ultrathin film-transferred light-emitting diodes (FTLEDs) with ellipse holes of triangular photonic crystal (PhC) lattice have been ... See full document

... peaks of their typical room-temperature EL spectra are all located at 460 nm at a driving current of 20 ...mA. From Fig. 3(b), guided light can be extracted outside LED chips by scatterings at ... See full document

... effect of photons from various valance band states and light ...asymmetric two-dimensional PhCs on a-plane GaN ...ability of the polarized photons in different valence bands is ... See full document

... source of nonradiative recombination ...because of a phonon ...other two samples; therefore, its heat effect was strongest, resulting in an earlier output ...that of the CS-LED, the power ... See full document

... pattern from a non-optimized cavity length of 550 nm GaN uMCLED, we used the GaN uMCLED incor- porated with a PhC lattice to enhance the ...constant of a = 370 nm, and two different PhC hole ... See full document

... Terms—Holography, light-emitting diode (LED), photonic ...based light-emitting diode (LED) in ...reliability of LEDs with dif- ferent colors, as well as effective reductions in ... See full document

... GaN-based photonic crystal surface-emitting lasers(PCSELs) with AlN/GaN distributed Bragg reflectors were fabricated and ...characteristics of GaN-based PCSEL has been determeined and ... See full document

... vertical-type light-emitting diode with a two-dimensional photonic crystal (PC) on the emitting surface and a TiO 2 –SiO 2 omnidirectional reflector on the bottom was ... See full document

... developments of advanced gallium nitride 共GaN兲- based 共light-emitting diode兲 LED structures are critical to a wide range of applications that include intelligent interior lighting and optical ... See full document

... starts from window regions and grows vertically as well as laterally to cover the SiO strips until obtaining planar surface over whole ...For light extraction efficiency improvement, various surface ... See full document