Page 5 - Shimadzu UV-2600-2007i

Electricity, Electronics, Band Gap Measurements for Window Glass Transmittance
and Optics Semiconductors Construction Measurements
The diffuse re ection spectra for two types of semiconductors (red line: Two types of window glass were measured utilizing the ISR-2600Plus
Culn 0.5 Ga 0.5 Se 2 , blue line: CulnSe 2 ) used as solar cell materials have been integrating sphere. The sample shown by the red line is highly
measured using the ISR-2600Plus integrating sphere. It is evident that the transparent to near-infrared light at 800 nm or more.
absorption edge (position where the re ectance drops) differs depending The sample shown by the blue line, however, is apparently not very
on the sample. This difference signi es a difference in the band gap* for transparent to near-infrared light.
these samples. (The samples were provided by Wada Laboratory, Faculty
of Science and Technology, Ryukoku University.)
The band gaps for the samples were calculated utilizing the Tauc
method. The results obtained were 1.27 eV for Culn 0.5 Ga 0.5 Se 2 (red line)
and 0.99 eV for CulnSe 2 (blue line).
* The term band gap refers to the energy difference between the top of the valence
band, which is full of electrons, and the bottom of the conduction band, which does
not contain electrons.

Chemicals Thickness Measurements of Cling Films Textiles Evaluation of CNF

Undulating interference waveforms sometimes occur if light is passed An ISR-2600Plus integrating sphere was used to measure the total
through a lm. The lm thickness of a sample can be determined by transmittance spectrum of cellulose nano ber (CNF). Depending on the
using these interference waveforms. The black line shows transmittance raw materials used, spectra can vary, transparency can vary, and spectral
data for polyvinylidene chloride lm, the red line for nylon lm, and the tendencies in the ultraviolet region can vary.
blue line for polypropylene lm.
By using the optional thickness calculation software, the interference
waveforms were calculated to be 10.0 m, 17.0 m, and 21.4 m,
respectively.
Transmittance
(Caution) The sample’s refractive index must be entered for the lm thickness
calculation.

Wavelength

Life Sciences DNA and Protein Measurements Foods Vitamin Measurements
The red and blue lines are the absorption spectra for dsDNA and BSA This shows the absorption spectra for ribo avin (vitamin B 2 ). The sample
(bovine serum albumin), respectively. The concentration values are 45 concentrations are, in order from the highest absorbance, 0.08, 0.04,
ng/ L for dsDNA and 2.2 mg/mL for BSA. 0.02, and 0.01 mg/mL.

UV-2600i/UV-2700i
UV-VIS Spectrophotometer 5