Hamamatsu News 2 / 2017

SYSTEMS PRODUCTS 29 News 2017 Vol. 2 Molecular Orientation Characteristic Measurement System C14234-11 New The measurement result is comparable to simulation data The C14234-11 is designed for measuring fluorescence spectra with multichannel analyzer PMA-12 and for angle dependency of P-polarized fluorescence with newly designed optics. Features „ „ Measurement of angle dependency of PL intensity „ „ Comparison to the simulation results is possible „ „ Easy alignment of the optics and easy measurement „ „ Selectable excitation wavelength of LED light source unit (Options) „ „ Integrated shutter to prevent material degradation Application „ „ Automatically measure the angle dependence of P-polarized light of fluorescence spectra ND Inspection Industry Security Optical Comms Semicon Prod. Analytical Measurement Drug Discovery Life Science Medical Academic Res. C14234-11 Specifications Parameter Specification Unit Angle range of measurement −90° to 90° (the vertical direction of sample is 0°) - Excitation wavelength 365 nm Emission wavelength 350 to 950 nm Angle resolution Approx. 3.5° - Sample size 30 (using R20 mm lens) mm Angle (degree) 0 0.3 -0.3 0.6 0.9 1.2 0 22.5 45 67.5 90 Normalized intensity 0 0.375 0.75 1.125 1,5 0 22.5 45 67.5 90 Simulation Experimental HPK Comparison with the simulation Angular dependent PL intensity data of a PL material measured by C14234-11 and the simulation. The molecular orientation pattern in the organic EL device is reflected in the photoluminescence (PL) emission pattern versus the detection angle. This PL emission pattern can be obtained by simulation from the molecular orientation pattern in the device. In order to compare and confirm whether the sample has the characteristics as simulated, it is necessary to measure the PL emission pattern of the device. For this measurement, adjustment of a complicated optical system is necessary, and researchers have required much time and labor. With the molecular orientation characteristic measurement system C14234-11, it is possible to accurately measure the PL emission pattern of the organic EL device simply by setting the sample. Courtesy of Prof. Chihaya Adachi, Center for Organic Photonics and Electronics Research, Kyushu University and Prof. Takeshi Komino, Education Center for Global Leaders in Molecular Systems for Devices, Kyushu University