On-chip polychromatic visible light emitters obtained by 3D capillary force assembly
•Three-dimensional particle structures were built from a multi-color (red, green and blue) colloidal suspension using capillary for assembly.•Optical response was studied under UV irradiation after transfer on a silicon surface.•Particle structures exhibit a polychromatic visible light emission.•Spe...
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Veröffentlicht in: | Microelectronic engineering 2013-10, Vol.110, p.414-417 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | •Three-dimensional particle structures were built from a multi-color (red, green and blue) colloidal suspension using capillary for assembly.•Optical response was studied under UV irradiation after transfer on a silicon surface.•Particle structures exhibit a polychromatic visible light emission.•Spectrum and color can be controlled by varying the red, green and blue particle ratio.•We report color coordinates very closed to the ideal pure white.
This work presents the fabrication of on-chip polychromatic light source from a colloidal suspension. Capillary force assembly of the colloidal mixture composed from red, blue and green fluorescent dye doped 100nm particles is performed on a patterned substrate to create particles structure composed of ∼10,000 nanoparticles with a natural hexagonal close-packed arrangement. Under UV excitation, the particle structure exhibit a white light emission closed to the CIE characteristics of the ideal pure white. |
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ISSN: | 0167-9317 1873-5568 |
DOI: | 10.1016/j.mee.2013.02.100 |