Indium tin oxide

About: Indium tin oxide is a research topic. Over the lifetime, 17857 publications have been published within this topic receiving 402127 citations. The topic is also known as: indium tin oxide.

Photovoltaic structure with a conductive nanowire array electrode

Abstract: A photovoltaic (PV) structure is provided, along with a method for forming a PV structure with a conductive nanowire array electrode The method comprises: forming a bottom electrode with conductive nanowires; forming a first semiconductor layer of a first dopant type (ie, n-type) overlying the nanowires; forming a second semiconductor layer of a second dopant type, opposite of the first dopant type (ie, p-type), overlying the first semiconductor layer; and, forming a top electrode overlying the second semiconductor layer The first and second semiconductor layers can be a material such as a conductive polymer, a conjugated polymer with a fullerene derivative, and inorganic materials such as CdSe, CdS, Titania, or ZnO The conductive nanowires can be a material such as IrO2, In2O3, SnO2, or indium tin oxide (ITO)

Effects of 160 MeV Ni12+ ion irradiation on HCl doped polyaniline electrode

Abstract: Conducting polymers are suitable as electrode materials for high performance supercapacitors because of their high specific capacitance and high dc conductivity in the charged state. Ion beam (energy >1 MeV) irradiation of materials is a novel technique to modify their properties. Polyaniline conducting polymer thin films doped with HCl are synthesized electrochemically on indium tin oxide coated glass substrates and are irradiated with 160 MeV Ni12+ ions at different fluences, namely, 5 × 1010, 5 × 1011 and 3 × 1012 ions cm−2. The dc conductivity measurements of the irradiated films showed up to 70% increase in conductivity, which may be due to the increase of carrier concentration in the polymer film as observed in UV-Vis spectroscopy and other effects like the cross linking of polymer chains, bond breaking and creation of defects sites. An x-ray diffractogram study shows that the degree of crystallinity of polyaniline increases upon swift heavy ion (SHI) irradiation with the increase in ion fluence. The capacitance of the irradiated films is lowered but that of the supercapacitors with irradiated films showed enhanced electrochemical stability compared with the devices with unirradiated films while characterized for a cycle life up to 10 000 cycles. This effect could possibly be ascribed to the stabilization of volatile surface groups upon SHI irradiation.

Dielectric response of ferroelectric thin films on non-metallic electrodes

Abstract: The dielectric response of thin films of perovskite ferroelectrics fabricated on electrodes such as indium tin oxide is calculated as a function of frequency, film & barrier layer thickness, and dielectric constant using an equivalent circuit model based on properties of the bulk, the electrode and a series resistance. Using reasonable estimates of parameters it is shown that measurements of the dielectric constant and loss by conventional dielectric bridges can lead to results which vary in a complex fashion and which may bear little relation to the true dielectric properties of the film. In particular, observation of a Curie temperature in thin films can often be masked by circuit or electrode effects. Results are given in terms of direct frequency plots and as impedance spectra.

Glancing Angle Deposition of Copper Iodide Nanocrystals for Efficient Organic Photovoltaics

Abstract: We report a simple method to achieve efficient nanostructured organic photovoltaics via patterning copper iodide (CuI) nanocrystals on indium tin oxide by glancing angle deposition. The strong interfacial interaction between zinc phthalocyanine (ZnPc) and CuI leads to the formation of nanopillar arrays with lying-down molecular order, which greatly improve light absorption and surface roughness for exciton dissociation. Optimized ZnPc/C60 bilayer cell has a power conversion efficiency of 4.0 ± 0.1%, which is about 3-fold larger than that of conventional planar cell.