AlGaInP light-emitting diodes with SACNTs as current-spreading layer
نویسندگان
چکیده
Transparent conductive current-spreading layer is important for quantum efficiency and thermal performance of light-emitting diodes (LEDs). The increasing demand for tin-doped indium oxide (ITO) caused the price to greatly increase. Super-aligned carbon nanotubes (SACNTs) and Au-coated SACNTs as current-spreading layer were applied on AlGaInP LEDs. The LEDs with Au-coated SACNTs showed good current spreading effect. The voltage bias at 20 mA dropped about 0.15 V, and the optical power increased about 10% compared with the LEDs without SACNTs.
منابع مشابه
Theoretical and experimental analysis of current spreading in AlGaInP light emitting diodes
The profile of light emission from aluminum gallium indium phosphide AlGaInP light emitting diodes has been studied and compared with the theoretical modeling of current spreading using a lossy transmission line model of current injected into the active region. Discrepancies between the experimentally determined emission profile and the theoretically predicted current injected into the active r...
متن کاملRadial Nanowire Light-Emitting Diodes in the (AlxGa1-x)yIn1-yP Material System.
Nanowires have the potential to play an important role for next-generation light-emitting diodes. In this work, we present a growth scheme for radial nanowire quantum-well structures in the AlGaInP material system using a GaInP nanowire core as a template for radial growth with GaInP as the active layer for emission and AlGaInP as charge carrier barriers. The different layers were analyzed by X...
متن کاملDirect evidence for suppression of Auger recombination in GaInAsSbP/InAs mid-infrared light-emitting diodes
Related Articles Large-area transparent conductive few-layer graphene electrode in GaN-based ultra-violet light-emitting diodes Appl. Phys. Lett. 99, 143101 (2011) Efficiency droop behaviors of the blue LEDs on patterned sapphire substrate J. Appl. Phys. 110, 073102 (2011) Effect of organic bulk heterojunction as charge generation layer on the performance of tandem organic light-emitting diodes...
متن کاملOmni-directional reflectors for light-emitting diodes
This article discusses possible solutions to limitations in light extraction efficiency of light-emitting diodes (LEDs) using new types of triple-layer omni-directional reflectors (ODRs). The ODRs have lower mirror losses than metal reflectors and distributed Bragg reflectors (DBRs). High-reflectivity ODRs have been incorporated into AlGaInP LEDs and GaInN LEDs. It is shown that the ODR signifi...
متن کاملAPPLIED PHYSICS REVIEWS—FOCUSED REVIEW High-efficiency AlGaInP light-emitting diodes for solid-state lighting applications
AlGaInP lattice matched to GaAs is suited for light-emitting diodes ~LEDs! operating in the red, orange, yellow, and yellow–green wavelength range. Such long-wavelength visible-spectrum devices will play an important role in solid-state lighting applications. This review discusses the major classes of AlGaInP device structures, including absorbing-substrate ~AS! LEDs, absorbing substrate LEDs e...
متن کامل