Nano-sized light emitting diodes by near field laser exposure
| F. Intonti, V. Matarazzo, A. Nasir, O. Makarovsky, R. Campion, A. Patanè, S. Kumar, A. Rastelli, O. G. Schmidt, M. Gurioli Appl. Phys. Lett. 98, 183102 (2011) URL PDF |
|
| Abstract | |
| We report a postfabrication process for the realization of nanosized light emitting diodes. The method is based on the exposure of the device to an Ar+ laser through an aperture near field optical microscope and can produce a large (>100 fold) increase in the electroluminescence within a near field hot spot as small as 440 nm. A study of morphological, photoluminescence and electroluminescence properties highlights the interplay between oxidation, annealing, and ablation processes for various laser exposure conditions. |