PHOTOCONDUCTION IN MULTICOMPONENT OXIDE GLASSES

Photoconductive properties and atomic structures have been studied in CdO(PbO)-SiO2-B2O3 ternary glasses to obtain insight into photoconduct ion in amorphous materials. X-ray diffraction patterns indicate that C dO and PbO phases exist in these glasses. Photoconduction spectra in C dO-containing glasses show sub-bandgap responses, which are modified w ith light soaking. Photocurrents become smaller at lower temperatures. These observations suggest that photocurrents flow through percolativ e CdO phases. (C) 1998 Elsevier Science B.V.