Using film nanostructure to control photoluminescence angular emission profiles

M. T. Taschuk; J. P. Gospodyn; J. C. Sit; M. J. Brett

doi:10.1117/12.763382

5 February 2008 Using film nanostructure to control photoluminescence angular emission profiles

M. T. Taschuk, J. P. Gospodyn, J. C. Sit, M. J. Brett

Proceedings Volume 6890, Optical Components and Materials V; 689005 (2008) https://doi.org/10.1117/12.763382
Event: Integrated Optoelectronic Devices 2008, 2008, San Jose, California, United States

Abstract

Luminescent thin films are used for many applications, including light-emitting diodes, lasers and flat panel displays. Glancing angle deposition (GLAD) is a physical vapor deposition technique which relies on highly oblique flux angles to create porous thin films. When combined with real-time substrate motion control and measurement of deposition rates, it is possible to produce high quality nanostructered thin films. A rugate filter uses a sinusoidally varying index profile to produce a stop band. Using the GLAD technique, it is possible to produce a rugate filter from a single material. The central wavelength, depth and width of the stop band can be designed by adjusting the film nanostructure. In this paper, rugates composed of Y₂O₃:Eu are used to control the angular emission profiles of the photoluminescent thin film. Confined, annular and isotropic emission profiles film is nearly uniform for emission angles between ~ -60° and ~60°.

Citation Download Citation

M. T. Taschuk, J. P. Gospodyn, J. C. Sit, and M. J. Brett "Using film nanostructure to control photoluminescence angular emission profiles", Proc. SPIE 6890, Optical Components and Materials V, 689005 (5 February 2008); https://doi.org/10.1117/12.763382

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