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    • 3. 发明申请
    • ELECTRONIC DEVICE WITH IMPROVED OHMIC CONTACT
    • 具有改进OHMIC接触的电子设备
    • WO2008120094A2
    • 2008-10-09
    • PCT/IB2008000788
    • 2008-03-25
    • PICOGIGA INTERNATLAHRECHE HACENE
    • LAHRECHE HACENE
    • H01L29/452H01L21/28575H01L29/41725H01L29/66462H01L29/778
    • The invention relates to an electronic device successively comprising from its base to its surface: - a support layer (1), - a channel layer (3) to contain an electron gas, - a barrier layer (4) - at least one ohmic contact electrode (5) formed by a superposition of metallic layers a first layer of which is in contact with the barrier layer (4). The device is remarkable in that the barrier layer (4) presents a region called contact region (10), under the ohmic contact electrode(s) (5), which region comprises at least one metal selected from the metals forming said superposition of metallic layers, and in that a local alloying (12) binds the contact region (10) and the first layer of the electrode (5).
    • 本发明涉及一种从其基底到其表面依次包括的电子器件: - 支撑层(1), - 包含电子气体的通道层(3), - 阻挡层(4) - 至少一个欧姆接触 电极(5)通过金属层的叠加形成,其第一层与阻挡层(4)接触。 该装置是显着的,其中阻挡层(4)在欧姆接触电极(5)下方具有称为接触区域(10)的区域,该区域包括选自形成金属叠加金属的金属中的至少一种金属 并且局部合金化(12)结合接触区域(10)和电极(5)的第一层。
    • 5. 发明申请
    • METHOD FOR MANUFACTURING A LAYER OF GALLIUM NITRIDE OR GALLIUM AND ALUMINUM NITRIDE
    • 制备氮化铝或铝和氮化铝层的方法
    • WO2009118244A1
    • 2009-10-01
    • PCT/EP2009/052881
    • 2009-03-11
    • PICOGIGA INTERNATIONALLAHRECHE, Hacene
    • LAHRECHE, Hacene
    • H01L21/20
    • H01L21/02458H01L21/02376H01L21/02378H01L21/02381H01L21/02505H01L21/02513H01L21/0254H01L21/02598H01L21/02631
    • The present invention relates to a method for manufacturing a crack-free monocrystalline layer (5) of nitride with a composition of Al x Ga- 1-x N, where 0 ≤ x ≤ 0.3, on a substrate (1 ) likely to generate tensile stress in the layer, said method comprising the following steps: a) the formation, on the substrate (1), of a nucleation layer (2) b) the formation, on the nucleation layer (2), of a monocrystalline intermediate layer (3) c) the formation, on the intermediate layer (3), of a monocrystalline seed layer (4) d) the formation, on the seed layer (4), of the monocrystalline layer (5) of Al x Ga- 1-x N nitride, This method is characterized in that: - the material of the intermediate layer (3) is aluminum and gallium nitride; - the material of the seed layer (4) is an AIBN compound in which the boron content is between 0 and 10%; - the ratio between the thickness of the seed layer (4) and the thickness of the intermediate layer (3) is between 0.05 and 1; - the temperature of forming the seed layer (4) is 50 to 150°C higher than the temperature of forming said crack-free monocrystalline layer (5) of Al x Ga 1-x N nitride.
    • 本发明涉及一种在具有Al x Ga 1-x N组成的氮化物的无裂纹单晶层(5)的方法,其中0 = x = 0.3,在基板(1)上可能会产生拉伸应力 所述方法包括以下步骤:a)在基底(1)上形成成核层(2)b)在成核层(2)上形成单晶中间层(3)c )在单晶种子层(4)的中间层(3)上形成d)在Al x Ga 1-x N氮化物的单晶层(5)的种子层(4)上形成该方法 其特征在于: - 中间层(3)的材料是铝和氮化镓; - 种子层(4)的材料是其中硼含量在0和10%之间的AIBN化合物; - 种子层(4)的厚度与中间层(3)的厚度之间的比率在0.05和1之间; - 形成种子层(4)的温度比形成Al x Ga 1-x N氮化物的无裂纹单晶层(5)的温度高50至150℃。