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The study of FT-IR spectrum, Raman spectrum, UV-Vis absorption spectrum as well as photoluminescence spectrum on
organic ultraviolet semiconductor KIP-OUVS-1 has been investigated. The main vibrational peaks of organic ultraviolet
semiconductor KIP-OUVS-1 in FT-IR spectrum and Raman spectrum have been assigned. The study of UV-Vis solution
absorption spectrum on the organic ultraviolet semiconductor KIP-OUVS-1 shows that there is an obvious ultraviolet
absorption peak in 210~280nm range, there are several ultraviolet absorption peaks in 290~390nm range too. The
photoluminescence spectra of organic ultraviolet semiconductor KIP-OUVS-1 at different excitation wavelengths have
also been investigated, the result shows that in the excitation wavelength of 220~360nm range, the shapes for different
photoluminescence peaks are similar under different excitation wavelengths, the sole difference among them is strength
of the peaks. At 280nm and 300nm excitation wavelengths, the relatively strong peaks have been gotten, at 220nm and
250nm excitation wavelengths, however, the photoluminescence peaks are relatively weak. Furthermore, for organic
ultraviolet semiconductor KIP-OUVS-1, the photoluminescence peaks have a stokes' red shift compared with those
absorption peaks for the solution samples, and an enantiomorphous symmetry, which is the powerful experimental proof
of Franck-Condon theory, between the absorption spectrum and photoluminescence spectrum has been observed too. For
the reason that the organic ultraviolet semiconductor KIP-OUVS-1 may be used to prepare large-area thin film and
flexible device on low-price, flexible substrates by means of thermal evaporation and solution method, thus, the authors
deduce that the organic ultraviolet semiconductor KIP-OUVS-1 may have an important application potential in
ultraviolet optoelectronic detecting or lighting field.
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