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    • 1. 发明申请
    • III-Nitride Light Emitting Devices Grown on Templates to Reduce Strain
    • III型氮化物发光器件生长在模板上以减少应变
    • US20080149961A1
    • 2008-06-26
    • US11615834
    • 2006-12-22
    • Patrick N. GrillotNathan F. GardnerWerner K. GoetzLinda T. Romano
    • Patrick N. GrillotNathan F. GardnerWerner K. GoetzLinda T. Romano
    • H01L33/00
    • H01L33/007H01L31/184
    • In a III-nitride light emitting device, the device layers including the light emitting layer are grown over a template designed to reduce strain in the device, in particular in the light emitting layer. Reducing the strain in the light emitting device may improve the performance of the device. The template may expand the lattice constant in the light emitting layer over the range of lattice constants available from conventional growth templates. Strain is defined as follows: a given layer has a bulk lattice constant abulk corresponding to a lattice constant of a free standing material of a same composition as that layer and an in-plane lattice constant ain-plane corresponding to a lattice constant of that layer as grown in the structure. The amount of strain in a layer is |(ain-plane−abulk)/abulk. In some embodiments, the strain in the light emitting layer is less than 1%.
    • 在III族氮化物发光器件中,包括发光层的器件层在设计成减小器件中特别是在发光层中的应变的模板上生长。 降低发光器件中的应变可以提高器件的性能。 模板可以在常规生长模板可获得的晶格常数的范围内扩展发光层中的晶格常数。 应变定义如下:给定层具有对应于与该层相同组成的自由材料的晶格常数和体内晶格常数a的体晶格常数a 对应于在该结构中生长的该层的晶格常数。 一层中的应变量是|(一个平面内的)本体体积。 在一些实施方案中,发光层中的应变小于1%。
    • 6. 发明授权
    • III-nitride light emitting devices grown on templates to reduce strain
    • 在模板上生长的III族氮化物发光器件以减少应变
    • US07547908B2
    • 2009-06-16
    • US11615834
    • 2006-12-22
    • Patrick N. GrillotNathan F. GardnerWerner K. GoetzLinda T. Romano
    • Patrick N. GrillotNathan F. GardnerWerner K. GoetzLinda T. Romano
    • H01L29/06
    • H01L33/007H01L31/184
    • In a III-nitride light emitting device, the device layers including the light emitting layer are grown over a template designed to reduce strain in the device, in particular in the light emitting layer. Reducing the strain in the light emitting device may improve the performance of the device. The template may expand the lattice constant in the light emitting layer over the range of lattice constants available from conventional growth templates. Strain is defined as follows: a given layer has a bulk lattice constant abulk corresponding to a lattice constant of a free standing material of a same composition as that layer and an in-plane lattice constant ain-plane corresponding to a lattice constant of that layer as grown in the structure. The amount of strain in a layer is |(ain-plane−abulk)|/abulk. In some embodiments, the strain in the light emitting layer is less than 1%.
    • 在III族氮化物发光器件中,包括发光层的器件层在设计成减小器件中特别是在发光层中的应变的模板上生长。 降低发光器件中的应变可以提高器件的性能。 模板可以在常规生长模板可获得的晶格常数的范围内扩展发光层中的晶格常数。 应变定义如下:给定层具有对应于与该层相同组成的自由材料的晶格常数的块状晶格常数吸收和对应于该层的晶格常数的面内晶格常数ain-平面 如在结构中生长。 一层中的应变量为|(ain-plane-abulk)| / abulk。 在一些实施方案中,发光层中的应变小于1%。
    • 7. 发明申请
    • III-Nitride Device Grown on Edge-Dislocation Template
    • 边缘位错模板上生长的III型氮化物器件
    • US20090032828A1
    • 2009-02-05
    • US11833921
    • 2007-08-03
    • Linda T. RomanoPatrick N. Grillot
    • Linda T. RomanoPatrick N. Grillot
    • H01L33/00H01L21/20
    • H01L33/32H01L21/02378H01L21/0242H01L21/02458H01L21/02505H01L21/02507H01L21/02513H01L21/0254H01L33/12
    • A semiconductor light emitting device includes a wurtzite III-nitride semiconductor structure including a light emitting layer disposed between an n-type region and a p-type region. A template layer and a dislocation bending layer are grown before the light emitting layer. The template layer is grown such that at least 70% of the dislocations in the template layer are edge dislocations. At least some of the edge dislocations in the template layer continue into the dislocation bending layer. The dislocation bending layer is grown to have a different magnitude of strain than the template layer. The change in strain at the interface between the template layer and the dislocation bending layer causes at least some of the edge dislocations in the template layer to bend to a different orientation in the dislocation bending layer. Semiconductor material grown above the bent edge dislocations may exhibit reduced strain.
    • 半导体发光器件包括含有设置在n型区域和p型区域之间的发光层的纤锌矿III族氮化物半导体结构。 模板层和位错弯曲层在发光层之前生长。 生长模板层使得模板层中至少70%的位错是边缘位错。 模板层中的至少一些边缘位错继续进入位错弯曲层。 使位错弯曲层生长成具有与模板层不同的应变大小。 在模板层和位错弯曲层之间的界面处的应变变化导致模板层中的至少一些边缘位错在位错弯曲层中弯曲成不同的取向。 在弯曲边缘位错以上生长的半导体材料可能表现出减小的应变。