title: Integration by self-aligned writing of nanocrystal/epoxy composites on InGaN micro-pixelated light-emitting diodes.
abstract: We report on the integration of monodisperse semiconductor nanocrystal (NC) color converters onto gallium nitride ultraviolet micro-pixelated light-emitting diodes ('micro-LEDs'). Integration is achieved in a 'self-aligned' process by forming a nanocomposite of the respective NCs in a photocurable epoxy polymer. Blue, green, yellow and red NC/epoxy blend microstructures have been successfully integrated onto micro-pixelated LEDs by this technique and utilised for color conversion, resulting in a five color emission single chip. Optical output power density of up to about 166 mW/cm2 is measured; spectral emission at 609 nm gives an estimated optical-to-optical conversion as high as 18.2% at 30 mA driving current.
authors: Institute of Photonics, University of Strathclyde, Glasgow, UK. benoit.guilhabert@strath.ac.uk
authors: B
authors: B
authors: Guilhabert
authors: D
authors: D
authors: Elfström
authors: A J C
authors: AJ
authors: Kuehne
authors: D
authors: D
authors: Massoubre
authors: H X
authors: HX
authors: Zhang
authors: S R
authors: SR
authors: Jin
authors: A R
authors: AR
authors: Mackintosh
authors: E
authors: E
authors: Gu
authors: R A
authors: RA
authors: Pethrick
authors: M D
authors: MD
authors: Dawson
mesh_terms: D017076:Computer-Aided Design; D003460:Crystallization / Q000379:methods; D004852:Epoxy Compounds / Q000737:chemistry*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005708:Gallium / Q000737:chemistry; D007204:Indium / Q000737:chemistry; D008029:Lighting / Q000295:instrumentation*; D049329:Nanostructures / Q000737:chemistry*; D036103:Nanotechnology / Q000295:instrumentation*; D015203:Reproducibility of Results; D012666:Semiconductors; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation
chemical_list: D004852:Epoxy Compounds; D007204:Indium; C473348:gallium nitride; D005708:Gallium; C513701:indium nitride