Abstract:
The invention relates to a method for manufacturing heterostructures for applications in the fields of electronics, optics or opto-electronics. This method is remarkable in that it consists of : - forming and/or depositing a silicon oxide Si?2 layer (3, 4) with a thickness of less than or equal to 25 nanometers on a donor substrate (1) and/or on a receiver substrate (2), - submitting this or these substrates (1, 2) to a treatment at a temperature comprised between 900°C and 1,200°C, under an atmosphere containing at least argon and/or hydrogen and no oxygen, in order to form in said silicon oxide layer (3, 4), trapping holes (30, 40), - bonding both substrates (1, 2), - carrying out annealing for reinforcing the bonding interface (5) at low temperature, said trapping holes (30, 40) being capable of retaining the gas species present at this interface, - transferring a portion (14) of the donor substrate (1), onto the receiver substrate (2).
Abstract:
The present invention relates to a method for transferring a layer (12) by the formation of an embhttlement area in a source substrate (10) onto a support substrate (30), comprising the successive steps of: (a) formation of a bonding layer (20) on the source substrate (10), (b) implantation of ions from a first species in the source substrate (10) through the bonding layer (20), so as to form an embrittlement area defining the layer (12) to transfer, (c) placement of the bonding layer (20) and the support substrate (30) in close contact, (d) fracturing of the source substrate (10) along the embrittlement area so as to transfer the layer (12) onto the support substrate (30). Said method comprises, before step (a), the implantation of ions from a second species in the source substrate (10) so as to form said embrittlement area.
Abstract:
The invention relates to a method for manufacturing heterostructures for applications in the fields of electronics, optics or opto-electronics. This method is remarkable in that it consists of : - forming and/or depositing a silicon oxide Siθ2 layer (3, 4) with a thickness of less than or equal to 25 nanometers on a donor substrate (1) and/or on a receiver substrate (2), - submitting this or these substrates (1, 2) to a treatment at a temperature comprised between 9000C and 1,2000C, under an atmosphere containing at least argon and/or hydrogen and no oxygen, in order to form in said silicon oxide layer (3, 4), trapping holes (30, 40), - bonding both substrates (1, 2), - carrying out annealing for reinforcing the bonding interface (5) at low temperature, said trapping holes (30, 40) being capable of retaining the gas species present at this interface, - transferring a portion (14) of the donor substrate (1), onto the receiver substrate (2).
Abstract:
The invention relates to a method for making a substrate of the semiconductor on insulator (SeOI) type, comprising an integrated ground plane (5) under the insulating layer (3, 4), this substrate being intended to be used in making electronic components. This method is remarkable in that it comprises the steps of : implanting atoms and/or ions of a metal, in at least one portion of a semiconducting receiver substrate (D, carrying out a heat treatment of said receiver substrate (1) in order to obtain an integrated ground plane (5) on or in at least one portion of said receiver substrate (1), transferring an active layer (23) stemming from a semiconducting donor substrate onto said receiver substrate (1), an insulating layer (3, 4) being inserted in between said donor and receiver (1) substrates, so as to obtain said substrate with an integrated ground plane (5).
Abstract:
A method of making a virtual substrate includes providing a device substrate (1) of a first material containing a device layer (2) of a second material different from the first material located over a first side of the device substrate, implanting ions (10) into the device substrate such that a damaged region (1b) is formed in the device substrate below the device layer, bonding the device layer to a handle substrate (4), and separating at least a portion of the device substrate from the device layer bonded to the handle substrate along the damaged region to form a virtual substrate comprising the device layer bonded to the handle substrate.
Abstract:
A method of forming a semiconductor device on a heavily doped P-type (110) semiconductor layer over a metal substrate includes providing a first support substrate and forming a P-type heavily doped (110) silicon layer overlying the first support substrate. At least a top layer of the first support substrate is removable by a selective etching process with respect to the P-type heavily doped (110) silicon layer. A vertical semiconductor device structure is formed in and over the (110) silicon layer. The vertical device structure includes a top metal layer and is characterized by a current conduction in a direction. The method includes bonding a second supporting substrate to the top metal layer and removing the first support substrate using a mechanical grinding and a selective etching process to expose a surface of the P-type heavily doped (110) silicon layer and to allow a metal layer to be formed on the surface.
Abstract:
A method of trapping hydrogen in a material (1) which comprises an epitaxially-grown hydrogen-trapping substance forming a hydrogen- trapping region, the method comprising bombarding the material (1) with hydrogen atoms substantially all of which have an energy in the range of approximately 0.05 eV to approximately 0.1 eV, and allowing at least some of the hydrogen atoms to interact with the hydrogen-trapping region, effecting trapping of at least some of the hydrogen atoms in the hydrogen-trapping region of the material (1).
Abstract:
Methods and apparatus for re-using a semiconductor donor wafer in a semiconductor-on-insulator (SOI) fabrication process provide for: (a) subjecting a first implantation surface of a donor semiconductor wafer to an ion implantation process to create a first exfoliation layer of the donor semiconductor wafer; (b) bonding the first implantation surface of the first exfoliation layer to a first insulator substrate; (c) separating the first exfoliation layer from the donor semiconductor wafer, thereby exposing a first cleaved surface of the donor semiconductor wafer, the first cleaved surface having a first damage thickness; and (d) subjecting the first cleaved surface of the donor semiconductor wafer to one or more elevated temperatures over time to reduce the first damage thickness to a sufficient level to produce a second implantation surface.
Abstract:
The invention concerns a method for producing a hybrid substrate, comprising a support substrate (40), a continuous buried insulator layer (42) and, on this layer, a hybrid layer (26 ) comprising alternating zones of a first material (26) and at least one second material (32), wherein these two materials are different by their nature and/or their crystallographic characteristics, said method comprising: - the formation of a hybrid layer (26), comprising alternating zones of first and second materials, on a homogeneous substrate (22), - the assembly of this hybrid layer, the continuous insulator layer (42) and the support substrate (40), - the elimination of a part at least of the homogeneous substrate (40), before or after the assembly step.