摘要:
A method of performing electroless electrochemical atomic layer deposition is provided and includes: providing a substrate including an exposed upper metal layer; exposing the substrate to a first precursor solution to create a sacrificial metal monolayer on the exposed upper metal layer via underpotential deposition, where the first precursor solution is an aqueous solution including a reducing agent; subsequent to the forming of the sacrificial metal monolayer, rinsing the substrate; subsequent to the rinsing of the substrate, exposing the substrate to a second precursor solution to replace the sacrificial metal monolayer with a first deposition layer; and subsequent to replacing the sacrificial metal monolayer with the first deposition layer, rinsing the substrate. The exposure of the substrate to the first precursor solution and the exposure of the substrate to the second precursor solution are electroless processes.
摘要:
A composition comprising a plurality of coated metal particles with a metal core surrounded by nested shells formed by an electrically conductive layer and by a barrier layer, at least one of the shells being formed by electroless plating. The invention also comprises a method of producing such compositions as well as the use of the composition in, for example, crystalline- silicon solar cell devices having contact structures formed on one or more surfaces of a solar cell device, such as those used in back contact solar cell devices or emitter wrap through (EWT) solar cell devices.
摘要:
A doped tin oxide contains a tin oxide and an oxide of a doping element. The doping element includes at least one of vanadium and molybdenum. Based on the total amount of the doped tin oxide,the tin oxide is about90-99mol%,and the oxide of the doping element is about1-10mol%. A polymer article containing the doped tin oxide,an ink composition containing the doped tin oxide,and method for preparing them are also provided.In addition,a method for selective metallization of the polymer article and a method for selective metallization of an insulating substrate are provided.
摘要:
To achieve fast electroless plating while ensuring that the plating composition used for this purpose is stable against decomposition, a method for regenerating said plating composition is provided. Said plating composition is suitable for depositing at least one first metal on a substrate 10 and which is accommodated by at least one plating device 100. Said plating composition contains said at least one first metal in an ionic form and at least one second metal in an ionic form. Said at least one second metal may be provided in a higher and in a lower oxidation state and, when it is provided in a lower oxidation state, is capable of reducing said at least one first metal being in the ionic form to a metallic state. Said method comprises the following method steps: (a) providing a regeneration device 200 having a working electrode 205 and a counter electrode 206, said working electrode 205 being disposed in a working electrode compartment 202 and said counter electrode 206 being disposed in a counter electrode compartment 203; said working electrode compartment 202 and said counter electrode compartment 203 are separated from each other by an ion selective membrane 204; said counter electrode compartment 203 accommodates a counter electrode liquid; (b) removing at least part of said plating composition from said at least one plating device 100; (c) contacting at least a fraction of said removed plating composition with said working electrode 205 of said regeneration device 200 and polarizing said working electrode 205 cathodically, so that said at least one second metal being provided in the higher oxidation state is reduced to the lower oxidation state and said at least one first metal is deposited on the working electrode 205 in the metallic state, thereby yielding a first portion of said removed composition; thereafter (d) removing said first portion from said removed composition and then contacting a remainder of said removed composition with said working electrode 205 having said at least one first metal having been deposited thereon in method step (c) in the metallic state and polarizing said working electrode 205 anodically, so that said at least one first metal being deposited on said working electrode 205 in the metallic state is dissolved into said remainder of said removed composition to form said at least one first metal in the ionic form, thereby yielding a second portion of said removed composition; thereafter (e) returning said first and second portions to said at least one plating device 100 to result in said plating composition containing said at least one first metal in the ionic form and said at least one second metal being provided in the lower oxidation state, so that said plating composition is capable of reducing said at least one first metal being in the ionic form to the metallic state.