[PDF] Top 20 High-efficiency GaN-based light-emitting diodes : light extraction by photonic crystals and microcavities.

... Routing and ltering A broad class of modeling studies has been performed with the aim of applying photonic crystals to the routing of optical signals, in the spirit of telecoms applications ... Voir le document complet

... UV Light emitting diodes (LEDs) based on Al x Ga 1-x N material are nowadays gaining particular attention due to their potential for replacing mercury lamps, currently used for sterilization ... Voir le document complet

... 8 and resistances of 1x10 -3 Ωcm 2 ) for a 327nm-emission ...reference and 5.3 µW and 12 µW for the AlGaN TJ and AlGaN IL TJ ...the high dislocation density in the AlN buffer layer ... Voir le document complet

... demonstrate and characterize flexible phosphor-converted white LEDs based on core/shell n-p junction NWs grown by catalyst-free metal-organic chemical vapor deposition ...substrate and ... Voir le document complet

... c-directional and m-directional axial heterostructures in which the QW is inserted along the nanowire length, as well as the c-directional radial heterostructure in which the QW is wrapped around the nanowire in a ... Voir le document complet

... organic light-emitting diodes using an ultrathin yellow-emitting layer of rubrene (5,6,11,12-tetraphenylnaphtacene) inserted on either side of the interface of a hole- transporting α-NPB ... Voir le document complet

... organic light-emitting diodes (OLED), organic field-effect transistors (OFET), to solar cells due to their good film-forming properties, relatively easy purification processes, high thermal ... Voir le document complet

... [24], and dopant excitation could arise from a better electron-hole recombination with the carbazole compounds playing the role of the carrier traps according to the trap mechanism ...PMC-doped and 2% ... Voir le document complet

... occupancy and negative sites. This bootstrapping method is not unique to RIP, and is indeed used in both isomorphous and anomalous methods, but it is much more critical in RIP because of the ... Voir le document complet

... Tuning the dot height in the active region of the device structure was achieved using the In flush process [ 10 , 11 ], which consists in removing all surface-resident In at a certain position during the overgrowth of ... Voir le document complet

... limited by the perovskite film ...LEDs and the corresponding thin film PLQYs is sum- marized in Table I ...device efficiency is also included in ...quantum efficiency spectrum of the ... Voir le document complet

... III-nitride based micro-light-emitting-diodes (µLEDs) are promising candidate for next- generation display applications, including near-eye displays and head-up ...in high ... Voir le document complet

... This thesis employs colloidal semiconductor nanocrystals (NCs) as nanoscale emissive probes to investigate the physics of light emitting diodes (LEDs), as we as to [r] ... Voir le document complet

... Organic Light Emitting Diodes (OLEDs) work very much like LEDs, except that the emissive (N-type material) and conductive (P-type material) layers are made from organic mat[r] ... Voir le document complet

... dominated by crystalline Si solar cells with power conversion efficiency (PCE) above 25 % [ 1 ...costs and material usage is to develop thin-film technologies [ 2 , 3 ...efficient light ... Voir le document complet

... plate and a linear analyzer and is defined as P C = 共I ␴+ − I ␴− 兲/共I ␴+ + I ␴− 兲 where I ␴+ and I ␴− are the intensities of the right 共 ␴ + 兲 and left 共 ␴ − 兲 circularly polarized components ... Voir le document complet

... 1 and 2 were measured using a device geometry having a mesa area of ...for high drive current ...or high drive currents, the I–V behavior is dominated by parasitic ...MX, and a ... Voir le document complet

... efficient and ultra-compact silicon polarization ...device and to the literature, showing potential state of the art performances evaluated ...a high confidence on the expected performances when the ... Voir le document complet

... Slow-light enabled photonic integrated microwave filter. S. Combri´ e 1 , J. Bourderionnet 1 , D. Martin 1 , A. De Rossi 1 , Z. Han 2 , X. Checoury 2 , M. Gay 3 , L. Bramerie 3 , C. Peucheret 3 , ... Voir le document complet

... the light blanket, a ...the light transmission to enhance the efficiency of light ...catheter‐ based light blanket technology is able to produce large diffusers with output power  ... Voir le document complet