Effect of silver concentration on the silver-activated phosphate glass

Silver centers luminescence in phosphate glasses subjected to X‐Rays or combined X‐rays and femtosecond laser exposure

“…Considering the X‐Ray irradiated GPN glasses in terms of effective absorption coefficients (Figure A,B) and the GPN p excitation/emission spectra (Figure ), the main 620 nm emission band is related to the absorption/excitation bands peaking at 280 nm, 320 nm and 380 nm. The associated lifetime is around 3 µs and it corresponds to Ag 2+ hole trap silver species detected using electronic paramagnetic resonance (not shown here) . In the GPN p 500 Gy vs 50 Gy differential absorption spectrum (Figure C), the band intensity ratio between contributions at 280 nm and 320 nm is noticeably different in comparison to the one in the 650 nm excitation spectrum.…”

Structural features of silver-doped phosphate glasses in zone of femtosecond laser-induced modification

“…Table 1 shows more complete information about structure units of experimental samples. Identification of spectral data was made accordingly to [10,[12][13][14][15][16][17][18][19][20][21][22][23][24][25]. …”

“…It is a multistep process that includes nonlinear absorption of laser pulse energy, carrier excitation and subsequent carrier-lattice thermalisation, followed by structural and thermal effects. The generated photoelectrons can participate in reduction of silver ions via several possible alternative reactions as well as holes may be trapped: Ag + +e=Ag 0 , Ag + + h + = Ag 2+ ; Ag 0 +Ag + = Ag 2 + [14,18] or Ag 2 + +Ag + = Ag 3 2+ [9]. The described processes can result in formation of neutral defects (Ag 0 , Ag n ) or charged agglomerates -large clusters like Ag 4 2+ and Ag 8 2+ [5].…”

Synthesis, characterization and properties of SrO-doped silver phosphate glass

“…The move from passive inert implant materials to active degradable materials indicates that phosphate glasses may have a role in tissue engineering. They are extensively used in the area of electronic and laser because of their low glass transition (T g ) and softening (T d ) temperatures, TEC and good ultraviolet transparency [6]. Apart from above, these glasses are important materials because of their structural versatility to accept several cation and/or anion exchanges [7].…”

“…The results clearly indicated that SrO doping changed the morphology of silver phosphate glass. Log frequency 6 …”