Effective extraction of photoluminescence from a diamond layer with a photonic crystal

0358910 - FZÚ 2012 RIV US eng J - Journal Article
Ondič, Lukáš - Dohnalová, Kateřina - Ledinský, Martin - Kromka, Alexander - Babchenko, Oleg - Rezek, Bohuslav
Effective extraction of photoluminescence from a diamond layer with a photonic crystal.
ACS Nano. Roč. 5, č. 1 (2011), s. 346-350. ISSN 1936-0851. E-ISSN 1936-086X
R&D Projects: GA AV ČR KAN400100701; GA MŠMT LC510; GA AV ČR KJB100100903
Grant - others:AV ČR(CZ) M100100902
Institutional research plan: CEZ:AV0Z10100521
Keywords : photonic crystals * spontaneous emission * light extraction * diffraction * nanocrystalline diamond films
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 10.774, year: 2011

Diamond-based materials possess many unique properties, one of them being a broad-band visible photoluminescence due to a variety of color centers. However, a high material refractive index makes the extraction of photoluminescence (PL) from a diamond layer inefficient. In this paper, we show that by periodical nanopatterning of the film’s surface into a form of two-dimensional photonic crystal, the extraction of PL can be strongly enhanced within the whole visible spectrum compared to the extraction of PL in a pristine or randomly nanopatterned film. On the basis of theoretical calculations, enhancement is shown to be due to the photonic crystal effect, including efficient coupling of an excitation laser into the diamond.
Permanent Link: http://hdl.handle.net/11104/0196820