Both ohmic and space-charge-limited conduction (SCLC) are observed, together with a low temperature mechanism which may be variable range hopping. Oxygen exposure leads to more rapid oxygen doping of the films than exposure to dry air. SCLC is controlled by either an exponential trap distribution...
The effects of Ti-doping on the crystal structure, electrical conductivity and oxygen permeability are investigated. The chemical stability in low oxygen partial pressure atmospheres is enhanced by Ti-doping. The partial substitution of Ti for Co is charge-compensated by the reduction of oxygen ...
Oxygen-Vacancy-Related Low-Frequency Dielectric Relaxation and Electrical Conduction in Bi:SrTiO3 The temperature dependence of dielectric properties and electrical conduction of $({\\mathrm{Sr}}_{1\\ensuremath{-}1.5x}{\\mathrm{Bi}}_{x}){\\mathrm{TiO}}_{3} (0.0133<~x<~0.133)$ was ...
Monovalent cationic vacancies and intrinsic defects of oxygen ions formed during the preparation process are the primary sources of hole carriers [84]. Recent studies have shed light on the conduction mechanism of p-type carriers in CuAlO2, revealing that acceptor defects can control semiconductor ...
The Ga3+/Ti4+ aliovalent substitution is accompanied by extra oxygen needed for the charge compensation. This oxygen transforms the isolated ditetrahedral groups in La4(Ga2O7□1)O2 into infinite trigonal bipyramid chains with interruptions due to the oxygen vacancies in La4(Ga1.0Ti1.0O7.5□0.5)...
Besides, slow reversible changes in the photodetectors conductivity were observed when moved from vacuum to the air and under illumination with a xenon lamp, which can be explained by the formation of charge transfer complexes with molecular oxygen and the polymer. The photogenerated current-light ...
et al. Interaction of oxygen with halide perovskites. J. Mater. Chem. A 6, 10847–10855 (2018). Article CAS Google Scholar Yang, Y. et al. Effect of doping of NaI monovalent cation halide on the structural, morphological, optical and optoelectronic properties of MAPbI3 perovskite. J. ...
In ad- dition to varying the oxygen content, cation doping [3-12], e.g., at the Y site, may also change n and affect many properties accordingly. These two meth- ods, though similar in terms of charge counting, may differ in many ways in affecting the normal state and superconducting...
Silicon dioxide films, 8鈥 nm thick, are sputter deposited in an oxygen鈥恆rgon atmosphere onto a silicon substrate at 200鈥壜癈. Electrical conduction and... S Suyama,A Okamoto,T Serikawa,... - 《Journal of Applied Physics》 被引量: 26发表: 1987年 Sodium-Induced Barrier-Height Lowering...
Clay minerals are composed of sheetlike particles that are stacked with two to three layers of alumino-oxygen octahedrons or silicon-oxygen tetrahedrons, with a large specific surface. Because the tetravalent silicon (Si4 +) in the silica tetrahedron is substituted by the trivalent aluminum (Al3 ...