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公开(公告)号:US20090045394A1
公开(公告)日:2009-02-19
申请号:US12189972
申请日:2008-08-12
IPC分类号: H01L33/00 , H01L31/0352 , H01L21/20
CPC分类号: H01L31/101 , B82Y10/00 , B82Y20/00 , B82Y30/00 , H01L21/0237 , H01L21/0242 , H01L21/02458 , H01L21/0254 , H01L21/02639 , H01L29/127 , H01L29/2003 , H01L33/06 , H01S5/3412 , H01S5/34333 , H01S5/4087
摘要: A method of manufacturing a semiconductor device comprises depositing a semiconductor layer over a semiconductor surface having at least one first region with a first (average surface lattice) parameter value and at least one second region having a second parameter value different from the first. The semiconductor layer is deposited to a thickness so self-organised islands form over both the first and second regions. The difference in the parameter value means the islands over the first region have a first average parameter value and the islands over the second region have a second average parameter value different from the first. A capping layer is deposited over islands and has a greater forbidden bandgap than the islands whereby the islands form quantum dots, which have different properties over the first and second regions due to difference(s) between the first and second region islands.
摘要翻译: 一种制造半导体器件的方法包括在半导体表面上沉积半导体层,所述半导体表面具有至少一个具有第一(平均表面晶格)参数值的第一区域和至少一个第二区域,该第二区域具有与第一参数值不同的第二参数值。 半导体层被沉积成厚度,从而在第一和第二区域上形成自组织的岛状物。 参数值的差异意味着第一区域上的岛具有第一平均参数值,并且第二区域上的岛具有与第一区不同的第二平均参数值。 覆盖层沉积在岛上并且具有比岛更大的禁止带隙,由此岛由于第一和第二区域之间的差异而形成量子点,其在第一和第二区域上具有不同的性质。
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公开(公告)号:US20110079767A1
公开(公告)日:2011-04-07
申请号:US12995773
申请日:2009-06-03
CPC分类号: H01S5/34333 , B82Y10/00 , B82Y20/00 , G06N10/00 , H01S5/041 , H01S5/06236 , H01S5/3412
摘要: A nitride semiconductor device comprises: a layer structure including an active region (102) containing AlxGayIn1-x-yN quantum dots layers (102a), and means (104a,104b) for applying an electric field across the active region to modify the spin orientation of excitons in the quantum dots. The exciton spin lifetime at 300K is, for at least a range of values of the electric field applied across the active region, at least 1 ns, more preferably at least 10 ns, and particularly preferably at least 15 ns or 20 ns. These lifetimes may be obtained by configuring the device such that the exciton binding energy is, for at least a range of values of the electric field applied across the active region, 25 meV or greater.
摘要翻译: 氮化物半导体器件包括:包括含有Al x Ga y In 1-x-y N量子点层(102a)的有源区(102)的层结构,以及用于在有源区上施加电场以修改自旋取向的装置(104a,104b) 的量子点中的激子。 对于在有源区域施加的电场的至少一个值的范围,300K处的激子自旋寿命至少为1ns,更优选为至少10ns,特别优选为至少15ns或20ns。 这些寿命可以通过将器件配置成使激子结合能量在施加在有源区域上的电场的至少一个值的范围为25meV或更大的范围内来获得。
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公开(公告)号:US20090321781A1
公开(公告)日:2009-12-31
申请号:US12147667
申请日:2008-06-27
CPC分类号: H01L33/08 , B82Y10/00 , B82Y20/00 , H01L21/0242 , H01L21/02458 , H01L21/0254 , H01L33/06 , H01L33/32 , H01S5/3412 , H01S5/34333
摘要: A semiconductor device includes an AlxGayIn1-x-yN layer and (Al,Ga,In)N quantum dots disposed on the AlxGayIn1-x-yN layer, wherein the indium fraction in the AlxGayIn1-x-yN layer is non-zero (1-x-y≠0).
摘要翻译: 半导体器件包括设置在Al x Ga y In 1-x-y N层上的Al x Ga y In 1-x-y N层和(Al,Ga,In)N量子点,其中Al x Ga y In 1-x-y N层中的铟部分为非零 -x-y0)。
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公开(公告)号:US08334157B2
公开(公告)日:2012-12-18
申请号:US12189972
申请日:2008-08-12
CPC分类号: H01L31/101 , B82Y10/00 , B82Y20/00 , B82Y30/00 , H01L21/0237 , H01L21/0242 , H01L21/02458 , H01L21/0254 , H01L21/02639 , H01L29/127 , H01L29/2003 , H01L33/06 , H01S5/3412 , H01S5/34333 , H01S5/4087
摘要: A method of manufacturing a semiconductor device comprises depositing a semiconductor layer over a semiconductor surface having at least one first region with a first (average surface lattice) parameter value and at least one second region having a second parameter value different from the first. The semiconductor layer is deposited to a thickness so self-organized islands form over both the first and second regions. The difference in the parameter value means the islands over the first region have a first average parameter value and the islands over the second region have a second average parameter value different from the first. A capping layer is deposited over islands and has a greater forbidden bandgap than the islands whereby the islands form quantum dots, which have different properties over the first and second regions due to difference(s) between the first and second region islands.
摘要翻译: 制造半导体器件的方法包括在半导体表面上沉积半导体层,所述半导体表面具有至少一个具有第一(平均表面晶格)参数值的第一区域和至少一个第二区域,该第二区域具有与第一参数值不同的第二参数值。 半导体层被沉积成厚度,从而在第一和第二区域上形成自组织的岛状物。 参数值的差异意味着第一区域上的岛具有第一平均参数值,并且第二区域上的岛具有与第一区不同的第二平均参数值。 覆盖层沉积在岛上并且具有比岛更大的禁止带隙,由此岛由于第一和第二区域之间的差异而形成量子点,其在第一和第二区域上具有不同的性质。
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公开(公告)号:US07858962B2
公开(公告)日:2010-12-28
申请号:US12354317
申请日:2009-01-15
IPC分类号: H01L29/06
CPC分类号: H01S5/34333 , B82Y20/00 , H01L33/08 , H01L33/32 , H01S5/0213 , H01S5/341 , H01S5/3412
摘要: A semiconductor light-emitting device fabricated in the (Al,Ga,In)N materials system has an active region for light emission (3) comprising InGaN quantum dots or InGaN quantum wires. An AlGaN layer (6) is provided on a substrate side of the active region. This increases the optical output of the light-emitting device. This increased optical output is believed to result from the AlxGa1-xN layer serving, in use, to promote the injection of carriers into the active region.
摘要翻译: 在(Al,Ga,In)N材料体系中制造的半导体发光器件具有包含InGaN量子点或InGaN量子线的用于发光的有源区(3)。 在有源区的基板侧设置AlGaN层(6)。 这增加了发光装置的光输出。 这种增加的光输出被认为是由AlxGa1-xN层在使用中产生的,以促进载流子注入有源区。
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6.
公开(公告)号:US20100269895A1
公开(公告)日:2010-10-28
申请号:US12430308
申请日:2009-04-27
申请人: Katherine Louise Smith , Thomas Heinz-Helmut Altebaeumer , James Ying Jun Huang , James Andrew Robert Dimmock
发明人: Katherine Louise Smith , Thomas Heinz-Helmut Altebaeumer , James Ying Jun Huang , James Andrew Robert Dimmock
CPC分类号: H01L31/03529 , H01L31/03685 , H01L31/03762 , H01L31/0725 , H01L31/076 , Y02E10/544 , Y02E10/545 , Y02E10/548
摘要: A multijunction photovoltaic structure includes a first subcell including a p-n or p-i-n junction with elongated structures; and a second subcell, arranged in tandem with the first subcell, and including a planar p-n or p-i-n junction.
摘要翻译: 多结光伏结构包括具有细长结构的p-n或p-i-n结的第一子电池; 和与第一子电池串联布置的第二子电池,并且包括平面p-n或p-i-n结。
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