1,721,064 research outputs found
Optical microscopy and spectroscopy for readout and characterization of lithium fluoride x-ray imaging detectors
No full textOptical Characterization of Active Waveguides produced in Lithium Fluoride by He+ Implantation
No full textMorphological, electrical and optical properties of organic light-emitting diodes with a LiF/Al cathode and an Al-hydroxyquinoline/diamine junction
No full textWe report the results of the morphological, electrical and optical characterisation of double-layer Alq3-based organic emitting diodes with a lithium fluoride (LiF)/Al cathode. A detailed electron microscopy investigation of their cross-section shows the presence of LiF isolated grains underneath the Al film. Due to the introduction of the LiF layer, luminance was larger than 30,000cd/m2 at a bias voltage VB=25V with a maximum external luminous efficiency as large as 46lm/W at VB=20V. Performing on/off VB cycles at a very low frequency, each time a recovery of the initial electric and luminous performance was observed. The non-exponential decay of both electric current and luminance during each on-cycle has been interpreted as the signature of dispersive transport controlled by multiple trapping on localised states in an amorphous system. © 2004 Elsevier B.V. All rights reserved
Optical investigation of metallic lithium colloids and F-centers in ion-assisted LiF thin films
No full textConcetration of F2 and F3+ Defects in He+ Implanted LiF Crystals Determined by Absorption and Photoluminescence Measurements
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