期刊
APPLIED PHYSICS LETTERS
卷 94, 期 10, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.3097027
关键词
diffraction gratings; organic compounds; permittivity; photoluminescence; plasmonics; surface plasmons
资金
- National Science Council of the Republic of China [NSC 97-2221-E-002-056, NSC 97-2221-E-259-009, NSC 97-2218-E-002-014]
- Ministry of Education, Republic of China
In this paper, we had quantitatively investigated the photoluminescence of organic emitter on a Si substrate with periodically corrugated metal thin film experimentally and theoretically. Due to the plasmonic coupling by the metal gratings, 4.3 times and 1.7 times enhancements in optical intensities were observed at specified and full viewing angles at certain wavelengths, respectively. Good agreement of angular-frequency versus in-plane wavevector (omega-k) curves between experiments and calculations were obtained when varying organic materials, metal materials, and grating pitches. Two different metal materials were used, which show slight shift in omega-k curves due to the high sensitivity of the surface plasmon to the relative permittivity.
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