Structural, Optical and Electrical Properties of Undoped and Doped ZnO Thin Films

ZnO, which has high electrochemical stability, wide band gap energy, large excitonic binding energy, intense near band excitonic emission and is non-toxic, have potential applications in all fields. This chapter reviews the structural, optical and electrical properties of undoped and doped ZnO thin films. The type of doping highly influences the structural properties such as grain size, texture coefficient and unit cell properties. The dopants of transition metal and nonmetals have unique characteristics. Moreover, mono-doping and co-doping encourage this research. The optical properties such as bandgap, charge carrier concentrations and transmissions of the films depend on the doping as well as the preparation condition of the films. The effect of doping on its properties is also discussed

[1,3-Bis(diphenyl­phosphino)pentane-κ2 P,P′]tetra­carbonyl­chromium(0)

In the title compound, [Cr(C29H30P2)(CO)4], the Cr atom is octa­hedrally coordinated by four carbonyl ligands and one bidentate phosphine ligand, which is bounded as a chelate in a cis position. The average Cr—P and Cr—C bond lengths are 2.377 and 1.865 Å, respectively

Bidentate mixed ligand ruthenium(III) complexes containing triphenylphosphine or triphenylarsine and their antibacterial activity

573-576Ruthenium(III) mixed ligand complexes of the type [RuX2(LL')(EPh3)2] (X = Cl or Br; LL' = α, β-unsaturated-β - ketoaminate; E = P or As) have been synthesized by the reactions of [RuCl3(PPh3)3], [RuCl3(AsPh3)3], [RuBr3(AsPh3)3]or [RuBr3(PPh3)2h(MeOH)] with appropriate bidentate chelating ligands. The complexes have been characterised by elemental analyses, spectral (IR, electronic and EPR) and electrochemical data. An octahedral structure has been tentatively proposed for all these complexes. The antibacterial activities of some of the ligands and their complexes have also been carried out

Synthesis and characterisation of ruthenium(III) complexes containing dibasic tetradentate Schiff bases

741-745Several hexacoordinated ruthenium (III) complexes of the type [RuX(LL')(EPh3)] (where, X=CI or Br; LL'=tetradentate Schiff bases; E=P or As) have been synthesised by the reactions of [RuX3,(EPh3)3] or [RuBr3,(PPh3)2MeOH)] with appropriate Schiff bases having the donor groups (O,N) viz., <i style="mso-bidi-font-style: normal">o-hydroxy acetophenone ethylenediimine (<i style="mso-bidi-font-style: normal">o-hyacen), o-hydroxy acetophenone propylenediimine (o-hyacpn), o-hydroxy acetophenone tetramethylenediimine (o-hyactn) and o-hydroxy acetophenone orthophenylenediimine (o-hyac<i style="mso-bidi-font-style: normal">opn) in 1:1 molar ratio. All the complexes have been characterised on the basis of elemental analyses and spectral (IR, electronic and EPR), electrochemical and magnetic moment data. The antibacterial activities have also been tested for these complexes. </span