Influence of Erbium Ions on the Optical and Structural Properties of Polyvinyl Alcohol

Abstract

Polyvinyl alcohol (PVA) films doped with erbium chloride (ErCl 3 ) have been prepared by casting from their aqueous solutions. The structure of the doped samples as well as the interactions between the host PVA and Er +3 was investigated using FTIR spectroscopy. The optical measurement was recorded at room temperature in the range from 200 nm to 2000 nm. FTIR measurements revealed that Er +3 forms complex configuration within the PVA structure. PVA doped with 9 wt% of ErCl 3 exhibits energy gap and refractive index of 5.1 eV and 1.72, respectively. The effect of the doping increment of ErCl 3 on the optical parameters has been discussed.

Polyvinyl alcohol: A review of research status and use of polyvinyl alcohol based nanocomposites

“…The band gap of PVA–PPY composite (2.68 eV) was decreased to 2.03 eV after adding 1 wt% CoCl 2 [29]. Hamdalla et al doped PVA with erbium chloride (ErCl 3 ) and obtained composite films by casting method. The FTIR studies showed complex formation of Er +3 in PVA structure.…”

“…The 9 wt% ErCl 3 doped sample decreased energy band gap of PVA to 5.1 eV and enhanced refractive index to 1.72. The composites were suggested to be useful as new materials for optical devices . Muhammad et al explored the optical properties of sodium nitrate (NaNO 3 ) doped PVA nanocomposites.…”

Preparation and investigation of suitability of gadolinium oxide nanoparticle doped polyvinyl alcohol films for optoelectronic applications

“…An increase in the excitation and emission wavelengths with increasing particle size was observed in ZnO-polybutanediol mono acrylate (PBDMA) nanocomposites [16] and for ZnO quantum dots dispersed in PMMA [17]. Polyvinyl alcohol (PVA) has easy film forming ability, ease in incorporation of dopants, sensing property, biocompatibility and ability to encapsulate unstable nanoparticles and is a promising candidate for opto-electronic applications [18][19][20][21][22][23][24][25][26]. Salicyclic acid (SA) and its sodium salt added to PVA is found to make a good optical sensor for water/humidity as its photoluminescence gets quenched in the presence of moisture [18].…”

Bragg wavelength shift for irradiated polymer fiber Bragg grating

“…Therefore, the refractive index (n) of the optical fiber plays a vital role in its optical properties and can be calculated as follows [31]:…”