Photoluminescence and electroluminescence from a hybrid of lumogen red in nanoporous-silica
Wang, Junling1; He, Zhiqun1; Wang, Yongsheng1; Mu, Linping1; Cao, Anmin2
AbstractIn this paper white electroluminescence from a lumogen red-doped nanoporous silica matrix is presented. The matrix was prepared using a sol-gel process, and lumogen red-a perylene derivative-was doped at a number of concentrations. The photoluminescence and electroluminescence of the lumogen red-doped nanoporous-silica composite were investigated in detail. The structures, surface morphology, and optical properties of the nanoporous silica composites were investigated. The average pore size of the nanoporous-silica matrix was similar to 5 nm. The absorption spectra of the lumogen red in the nanoporous-silica matrix were broader than those from solution specimens. The photoluminescence of the lumogen red-doped nanoporous-silica matrix depended strongly on the excitation wavelengths. When excited at relatively longer wavelengths, e.g., 467 nm, the emissions peaked at constant positions (similar to 608 nm) for all cases, except a small shift to the red from its solution 601 nm. However, if excited at a shorter wavelength in the range of 200-400 nm, additional blue emissions were observed, which were particularly strong and suggested defect centers of the nanoporous-silica matrix. The electroluminescence from a single-layered sandwich device consisting of the lumogen red-doped nanoporous-silica was interesting. When driving with an AC electric field, electroluminescence spectra covered a whole spectral range, consisting of the red emission from lumogen red and the blue and green emission from the nanoporous silica matrix. In this way, we actually achieved a white electroluminescence from this hybrid organic and silica device with a color coordinate, CIE [x, y] = [0.30, 0.35] at a driving electric field of 3.0 x 10(6) V/cm. This was a first attempt to investigate electroluminescence from an organic dye-doped nanoporous silica matrix.
KeywordLumogen Red Nanoporous Silica Photoluminescence Electroluminescence White
Indexed BySCI
WOS IDWOS:000254540700045
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Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorHe, Zhiqun
Affiliation1.Beijing Jiaotong Univ, Key Lab Luminescence & Opt Informat, Minist Educ, Inst Optoelect Technol, Beijing 100044, Peoples R China
2.Chinese Acad Sci, Key Lab Mol Nanostruct & Nanotechnol, Inst Chem, Beijing 100080, Peoples R China
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GB/T 7714
Wang, Junling,He, Zhiqun,Wang, Yongsheng,et al. Photoluminescence and electroluminescence from a hybrid of lumogen red in nanoporous-silica[J]. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,2008,8(3):1336-1340.
APA Wang, Junling,He, Zhiqun,Wang, Yongsheng,Mu, Linping,&Cao, Anmin.(2008).Photoluminescence and electroluminescence from a hybrid of lumogen red in nanoporous-silica.JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,8(3),1336-1340.
MLA Wang, Junling,et al."Photoluminescence and electroluminescence from a hybrid of lumogen red in nanoporous-silica".JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 8.3(2008):1336-1340.
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