Concentration and temperature dependences of infrared reflectivity spectra in glass ionic conductor AgI– and Ag2X–AgPO3 systems (X=S, Se, Te)

Decoupling mobility and charge carrier concentration in AgR-AgPO3 glasses (R = Cl, Br, I)

“…Even to this day, however, there is no widely accepted model of ion transport in disordered media, all the while the horizon of potential applications keeps broadening [1][2][3][4][5][6] . Since the first experimental reports on salt-doped metaphosphates from the late 1970's [7][8][9] , this family of glasses has been under investigation; especially because metaphosphates can be combined with high molar concentrations of halides, sulphides, and sulphates while maintaining reasonable glass forming ability 7,8,[10][11][12][13][14][15][16] , and the addition of such salts increases the measured ionic conductivity by several orders of magnitude. The prime example of such behaviour is the silver metaphosphates doped with silver iodide, where the addition of 50 mol% of AgI increases the conductivity at room temperature by 6 orders of magnitude in comparison with the pure silver metaphosphate, with very little change in the number density of silver atoms, and therefore, of charge carriers 9,17 .…”