Commissariat a L'energie Atomique Et Aux Energies Alternatives

Stmicroelectronics S.a.

Stmicroelectronics Maroc

Commissariat À L'énergie Atomique Et Aux Énergies Alternatives

Sylvain Nizou

Sami Oukassi

Messaoud Bedjaoui

Frédéric Lanois

Frederic Le Cras

Christophe Secouard

Johnny Amiran

Edgard Jeanne

Nicolas Lopez

Jouhaiz Rouchou

Pierre Garrec

A method for manufacturing an electronic device including a substrate, including assembling the substrate, by a joining zone of a first face of the substrate, with a joining zone of a first face of a carrier, and disjoining the substrate relatively to the carrier. After the step of assembling, the method includes formation of a film on the substrate, the film being configured to adhere to an adhesion zone of a second face of the substrate opposite the first face of the substrate, the adhesive force between the film and the adhesion zone of the second face of the substrate being chosen greater than the joining force between the joining zone of the carrier and the joining zone of the first face of the substrate. A traction on the film has a force of traction configured to overcome the joining force without overcoming the adhesive force.

Method for manufacturing an electronic device

A thin layer lithium-ion type battery comprising, on a substrate (), a cathode current collector layer () and an active portion constituted by a stack of a cathode layer () made of material suitable for inserting lithium ions, an electrolyte layer (), and an anode layer (), wherein the cathode layer presents, across its thickness, porosity that varies between its interface with the cathode current collector layer and its interface with the electrolyte layer, the variation in the porosity being non-zero so as to improve cohesion at both interfaces.

Battery of lithium-ion type with a cathode of varying porosity, and a corresponding method

A method for producing lithium-ion batteries comprising the steps of (a) forming, on a substrate, a cathode current collector layer and a stack of a cathode layer made from a material capable of inserting lithium ions, an electrolyte layer and an anode layer, (b) depositing a lithium layer on the anode layer in order to form a lithium alloy, (c) short-circuiting the anode and cathode layers by depositing an anode current collector layer on the anode layer, thereby causing the diffusion of the lithium ions from the anode layer to the cathode layer, and (d) separating the batteries, resulting in the opening of the short-circuit between the anode and cathode layers in all the batteries. The method simplifies and improves the method for producing lithium-ion microbatteries and improves the diffusion of the lithium ions from the anode layer to the cathode layer after short-circuiting these two layers.

Method for producing lithium-ion batteries

A method for processing at least one wall of an opening formed in a silicon substrate, successively including the steps of implanting fluorine atoms into an upper portion of the wall of the opening, performing an oxidization step, and applying a specific processing to at least a portion of the non-implanted portion of the opening.

Method for processing portions of walls of an opening formed in a silicon substrate

A Schottky diode with a vertical barrier extending perpendicularly to the surface of a semiconductor chip having a vertical central metal conductor in contact on the one hand with the substrate of the semiconductor chip with an interposed interface forming a Schottky barrier, and on the other hand with radially-extending conductive fingers.

Schottky diode with a vertical barrier

Growing community of inventors

Noizay, France

Sylvain Nizou