[PDF] Top 20 Luminous efficiency enhancement of white light-emitting diodes by using a hybrid phosphor structure

... yellow-emitting phosphor powders are mixed with transparent encapsulated resin and then dispersed in a cup reflector or directly coated on the LED chip ...thickness of the phosphor ... See full document

... examines a hybrid phosphor structure for white light-emitting ...The hybrid phosphor structure produces more efficient luminosity and more uniform ... See full document

... proposed a simple method to use imprinting technique with a wet-etched c-Si sub- strate to fabricate the textured phosphor ...intensity of the textured phosphor structure shows ... See full document

... cation of the shape of the surface phosphor layer 23 were proposed and ...for white LED by the optimized design package and using with patterned sapphire ...encapsulation ... See full document

... insertion of a thin silicone layer into a dual-layer remote phosphor structure enhances light extraction in white light-emitting diodes ...experiment, ... See full document

... form phosphor suspension slurry and sprayed onto the surface of ...centage of phosphor slurry was about 100 m and 50 ...distribution of the PET with phos- phor sample is measured ... See full document

... report a new constructive method of fabricating white organic light-emitting devices (OLEDs) with a flexible plastic film embedded with yellow ...composed of ... See full document

... report a new constructive method of fabricating white organic light-emitting devices (OLEDs) with a flexible plastic film embedded with yellow ...composed of ... See full document

... effect of thermal influence on the conformal and remote phosphor structures is demonstrated using the junction temperature and phosphor ...phosphor structure. Then, the junction ... See full document

... efficiency of remote phosphor white LEDs was further improved by embedding an air-gap layer in the LED ...package. By inserting a low-index layer under the phosphor layer, ... See full document

... Department of Electrical Engineering, b Institute of Micro-Electro-Mechanical-System Engineering, c Department of Chemistry, and d Department of Materials Science and Engineering, National ... See full document

... the hybrid white LED with the PFO materials and colloidal CdSe/ZnS QD are implemented in a UV LED by the dispense method, creating a simple device that generate the pure white ... See full document

... 共InGaN兲-based light emitting diodes 共LEDs兲 have a huge impact on the solid-state lighting 共SSL兲 ...composed of InGaN LEDs in the blue or UV wave- lengths and a combination ... See full document

... properties of over 200 SHG compounds with general formula ALiPO 4 (A ) Sr, Ba, Pb) have been ...hand, white light emitting diodes (LEDs) can offer benefits in terms of ... See full document

... solution. By the solvent evaporation method, 6 a 30 ␮ m phosphor film was formed on the chip, and the blue and yellow light intensityies, PB and PY, were measured by an integrating ... See full document

... r a c t In this study, the electroluminescence efficiency of the blue–green polymer light-emitting diodes (PLEDs) is enhanced by the insertion of blocking ...form a ... See full document

... presented a method for calculating phosphor conversion efficiency from the viewpoint of wavelength ...ratio A t to the phosphor concentration and thus can accurately predict the ... See full document

... coupling efficiency of the PIC structure, the 3D geometric model of the OLED was built by the ray tracing software, Light tools ...parameters—arrangement of PIC, the ... See full document

... angle of light–output to become larger and let total internal reflection ...p-metal of FC-LEDs would not baffle light–output and can be served as a reflective mirror to reflect the ... See full document

... part by the National Science Council of Taiwan under Grant ...Department of Electrical Engineering, National Central University, Tainan 701, Taiwan, ... See full document