Chin. Phys. Lett.  2002, Vol. 19 Issue (10): 1447-1449    DOI:
Original Articles |
Three-Colour Single-Mode Electroluminescence from Alq3 Tuned by Microcavities
ZHAO Jia-Min1;MA Feng-Ying2;LIU Xing-Yuan1,2;LIU Yun1;CHU Guo-Qiang1;NING Yong-Qiang1;WANG Li-Jun1,2
1Changchun Institute of Optics and Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130021 2Laboratory of Excited State Processes, Chinese Academy of Sciences, Changchun 130021
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ZHAO Jia-Min, MA Feng-Ying, LIU Xing-Yuan et al  2002 Chin. Phys. Lett. 19 1447-1449
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Abstract Organic metal microcavities were fabricated by using full-reflectivity aluminum film and semi-transparent silver film as cavity mirrors. Unlike conventional organic microcavities, such as the typical structure of glass/DBR/ITO/organic layers/metal mirror, a microcavity with a shorter cavity length was obtained by using two metal mirrors, where DBR is the distributed Bragg reflector consisted of alternate quarter-wave layers of high and low refractive index material. It is realized that red, green and blue single-mode electroluminescence (EL) from the microcavities with the structure, glass/Ag/TPD/Alq3/Al, are electrically-driven when the thickness of Alq3 layer changes. Compared to a non-cavity reference sample whose EL spectrum peak is located at 520 nm with a full width at half maximum (FWHM) of 93 nm, the microcavity devices show apparent cavity effects. The EL spectra of red, green and blue microcavities are peaked at 604 nm, 540 nm, and 491 nm, whose FWHM are 43 nm, 38 nm, and 47 nm, respectively.
Keywords: 42.50.Ct      78.60.Fi      68.65.Ac      61.82.Pv     
Published: 01 October 2002
PACS:  42.50.Ct (Quantum description of interaction of light and matter; related experiments)  
  78.60.Fi (Electroluminescence)  
  68.65.Ac (Multilayers)  
  61.82.Pv (Polymers, organic compounds)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2002/V19/I10/01447
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ZHAO Jia-Min
MA Feng-Ying
LIU Xing-Yuan
LIU Yun
CHU Guo-Qiang
NING Yong-Qiang
WANG Li-Jun
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