| dc.description.abstract | The paper focus on the studying of establishment and calibration the one-snap multi-angle spectroscopy optical system, and apply for organic light emitting diodes. The optical system is designed by the Afocal system, which makes establish the system simpler but also easier match magnification. Furthermore, the light of the analyte is collected by the object lens and expand the information of angle dimension. The space spectrum is limited by the system slit, and wavelength dimension is separated by the grating.
First, we obtain that the wavelength corresponds to the pixel of Complementary Metal-Oxide-Semiconductor (CMOS) in the early of the establishment, and use the Lambertian source to confirm the imaging and the system wavelength. The wavelength calibration which uses three different wavelength laser (635 nm, 532 nm, 473 nm) and the mercury lamp (546.07 nm, 576.96 nm, 579.07 nm) incidence the optical system, and show that the system is linear in the wavelength dimension. Second, the angle calibration shows that the system is the cubic polynomial curve in the angle dimension, and wavelength independent. Finally, Industrial Technology Research Institute provide the high stability organic light-emitting diodes (OLED), which are used to correct the optical system intensity in this paper. The paper uses the red (NPB/TPB3:DCJTB/Alq3) and green (NPB /Alq3) OLED to confirm the intensity correction result and the accuracy.
Moreover, the advantage of one-snap multi-angle spectroscopy optical system can be obtained from the experiment procedure, and the requirement of the element is less than the fiber system and the variable is less too. The one-snap multi-angle spectroscopy optical system is more convenient and fast, which can capture the image immediately (<1 s), compare to the fiber system, which needs the longer drive time. However, the way of the two system capture image is also different, and the spectroscopy optical system capture image directly the element attached to the objective lens. The fiber system must stay a certain height (7 mm) and sweep, therefore, it needs the larger element active area.
There are two important points in this paper. First, the establishment step and the calibration. Second, provides a reproducible way to measure the spatial spectrum of OLED. This system can be applied not only to the spatial spectrum measurement of general OLED but also to the future research of spectral measurement of organic microcavity components, which is helpful for research in the organic laser. | en_US |