Continuous and discontinuous growth of single crystalline light-emitting films on mica

Frank Balzer; Horst-Guenter Rubahn

doi:10.1117/12.451660

4 November 2002 Continuous and discontinuous growth of single crystalline light-emitting films on mica

Frank Balzer, Horst-Guenter Rubahn

Proceedings Volume 4809, Nanoscale Optics and Applications; (2002) https://doi.org/10.1117/12.451660
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

In this work we investigate with the help of low energy electron scattering, force microscopy and optical spectroscopy the growth of ultrathin p-nP (n=4,5,6) films on mica surfaces. We find conditions under which we obtain on a nanometric scale spatially localized emission and conditions under which the emission is spatially non-localized. The latter case results from continuous films of upright molecules (i.e. with transition dipole moments oriented parallel to the surface normal) whereas the former case is obtained if - under certain growth conditions - films consisting of high-aspect ratio 'needles' of laying molecules with well-oriented transition dipole moments along the surface have been grown. Because of a strong interaction between substrate surface dipoles and induced dipoles along the long molecular axes, the needles form macroscopic domains of almost perfectly mutually parallel aligned entities. The quality of the alignment depends on the length of the molecules.

Citation Download Citation

Frank Balzer and Horst-Guenter Rubahn "Continuous and discontinuous growth of single crystalline light-emitting films on mica", Proc. SPIE 4809, Nanoscale Optics and Applications, (4 November 2002); https://doi.org/10.1117/12.451660

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