caa a22 4500 469041307 CHVBK 20180323132812.0 cr unu---uuuuu 170328e19920801xx s 000 0 eng 10.1007/BF02857503 doi (NATIONALLICENCE)springer-10.1007/BF02857503 Photoconductivity and dark conductivity studies of (MgO-ZnO) mixed system [Elektronische Daten] [Sadhana Devi, S Prakash] The photoconductivity and dark conductivity of (20% MgO-80% ZnO) mixed system in polystyrene binder layer have been studied and compared with (50% MgO-50% ZnO) and ZnO samples. For (20% MgO-80% ZnO) and (50% MgO-50% ZnO) samples, the dark current is found to be space charge limited at higher voltages. The photocurrent shows non-Ohmic behaviour at lower voltages and tends to saturation at higher voltages. For 100% ZnO system at higher voltages the photocurrent does not show any saturation effect and the dark current becomes linear. The change in photocurrent versus intensity curve from superlinear to sublinear indicates the presence of sensitizing centres near to the valence band and the existence of an exponential trap distribution in (20% MgO-80% ZnO) and (50% MgO-50% ZnO) samples. For 100% ZnO system, the photocurrent versus intensity curve changes from sublinear to linear indicating the presence of exponential trap distribution. Photocurrent decays more rapidly with increasing percentage of MgO in the mixed system. The X-ray diffraction pattern of these samples do not show formation of solid solutions. the Indian Academy of Sciences, 1992 Semiconductors nationallicence photoconductors nationallicence photo-excitation nationallicence 72·40 nationallicence Devi Sadhana Department of Electronics and Communication, University of Allahabad, 211 002, Allahabad, India aut Prakash S. Department of Electronics and Communication, University of Allahabad, 211 002, Allahabad, India aut Pramana Springer India 39/2(1992-08-01), 145-155 0304-4289 39:2<145 1992 39 12043 https://doi.org/10.1007/BF02857503 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02857503 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Devi Sadhana Department of Electronics and Communication, University of Allahabad, 211 002, Allahabad, India aut NATIONALLICENCE 700 1- Prakash S. Department of Electronics and Communication, University of Allahabad, 211 002, Allahabad, India aut NATIONALLICENCE 773 0- Pramana Springer India 39/2(1992-08-01), 145-155 0304-4289 39:2<145 1992 39 12043 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer