研究目的
Investigating the effect of FeCl3 doping on PVA to develop composites that are fairly transparent for light in the visible range, and able to block most wavelengths below 400 nm for increasing performance of some significant applications.
研究成果
FeCl3-doped PVA films are good candidates in the packaging community and also for photovoltaic application due to their enhanced UV absorption and reduced optical band gap.
研究不足
The distribution of FeCl3 particles in PVA is not uniform with very high agglomerations, forming irregular shapes.
1：Experimental Design and Method Selection:
PVA and FeCl3 were prepared by dissolving them separately in distilled water. A mixture of the dissolved polymer and the fillers of their different mass fractions of FeCl3 were cast on a glass dish and reserved in a dry atmosphere at room temperature for about 1 week.
2：Sample Selection and Data Sources:
PVA films with different mass fractions of FeCl3 were obtained, where the fillers concentration =0,
3：1, 5, 1, 5, 10 and 20 wt%. List of Experimental Equipment and Materials:
X-ray diffractometer (Schimadzu, 7000) with a Cu Kα (λ =
4：1542 nm) source. A UV-Vis double beam scanning spectrophotometer (UVD-2950) measured UV-Vis spectra. Experimental Procedures and Operational Workflow:
The thickness of the films was about
5：1 mm. XRD patterns of PVA and FeCl3 doped PVA films were recorded. UV-Vis spectra were measured. Data Analysis Methods:
The absorption coefficient α (ν) was estimated from the absorbance (A) by Beer Lambert’s formula. The optical energy gap and the types of electronic transition were concluded from the absorption spectra.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
