Introduction
| Topics | Application | Instrument |
|---|---|---|
| Oriented Films / Substrate | Impurity / abnormality analysis Contrast evaluation by polarization spectroscopy |
FTIR Microscope, Raman UV/Vis |
| Color Filter | Analysis of pigments and binder resin Color appraisal |
FTIR Microscope UV/Vis, UV/Vis Microscope |
| Organic EL / LED | Color analysis Film thickness, optical constant |
Fluorescence Ellipsometer |
| Energy Conversion of Emitting Material | Quantum efficiency | Fluorescence |
Transmittance Measurement of Color Filter for LCD Panel
JASCO MSV-5000 UV/Vis/NIR Microscope system allows wide range of applications in material research field such as evaluation of optical characteristics of functional crystal, band gap measurement and film thickness measurement of semiconductor materials and evaluation of transmission / reflection property of micro size devices.
Transmittance spectra of color filters for LCD panel
A circular 10 µm aperture was applied for each subpixel of red, green and blue (R, G, B).
3D Imaging of LCD Panel
Raman spectroscopy is optimum measurement method to obtain 3D imaging of samples with even complex structure such as LCD Panel. In this application, 3-D image indicates the structure of polarization film which is sandwiched by TAC films, thickness of glass substrate and depth position of color filter.
NRS-7100 Laser Raman Spectrophotometer
Fluorescence / Phosphorescence Quantum Yield Measurements
Quantum yield measurement is essential to evaluate fluorescent materials, such as organic EL or white LED used in illumination system. Three models of integrating sphere are available for FP-8000 series for measurement of total fluorescence of films, liquid and powder samples. Quantum yield can be calculated by analyzing obtained spectra using quantum yield calculation program.
Especially by using a model ILFC-847 100 mm diameter integrating sphere unit which can cool the sample by liquid nitrogen, measurement of phosphorescence quantum yield of material for organic EL can be done in addition to fluorescence quantum yield measurement.
FP-8500 with ILF-835 and ESC-842
Fluorescence Quantum Yield Measurement of Magnesium Tungstate
Magnesium tungstate used as blue-white fluorescent material in fluorescent lamp was sandwiched between two KBr plates and fluorescence spectrum was measured using FP-8500 with ILFC-847 / 100 mm diameter integrating sphere unit. Then quantum yield was calculated and internal quantum efficiency was determined to be 80.8 %, which is in good agreement with the published value of 81 % ( J. Illum. Engng. Inst. Jpn.Vol.83 No.2, 1999)
Phosphorscence Quantum Yield Measurement of Benzophenone
Benzophenone was measured using FP-8500 with ILFC-847 / 100 mm diameter integrating sphere unit by cooling sample by liquid nitrogen and then phosphorescence quantum yield of bezophenone was determined to be 93 %.
