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    • 3. 发明申请
    • ENHANCED P-CONTACTS FOR LIGHT EMITTING DEVICES
    • 增强用于发光装置的P-CONT
    • WO2011028855A1
    • 2011-03-10
    • PCT/US2010/047606
    • 2010-09-02
    • BHAT, RajaramNAPIERALA, JeromeSIZOV, DmitryXI, JingqunZAH, Chung-EnCORNING INCORPORATED
    • BHAT, RajaramNAPIERALA, JeromeSIZOV, DmitryXI, JingqunZAH, Chung-En
    • H01L33/02H01L33/32
    • H01L33/02H01L33/32H01L33/40
    • An optoelectronic light emitting semiconductor device is provided comprising an active region, a p-type Group III nitride layer, an n-type Group III nitride layer, a p-side metal contact layer, an n-side metal contact layer, and an undoped tunneling enhancement layer. The p-side metal contact layer is characterized by a work function W satisfying the following relation: W ≤ e - AFF ± 0.025 eV where e- AFF is the electron affinity of the undoped tunneling enhancement layer. The undoped tunneling enhancement layer and the p-type Group III nitride layer comprise conduction and valence energy bands. The top of the valence band V1 of the undoped tunneling enhancement layer is above the top of the valence band V2 of the p-type Group III nitride layer at the band offset interface to generate a capacity for a relatively high concentration of holes in the undoped tunneling enhancement layer at the band offset interface. Additional embodiments are disclosed and claimed.
    • 提供了一种光电子发光半导体器件,其包括有源区,p型III族氮化物层,n型III族氮化物层,p侧金属接触层,n侧金属接触层和未掺杂的 隧道增强层。 p侧金属接触层的特征在于满足以下关系式的功函数W:e = AFF±0.025eV其中e-AFF是未掺杂的隧道增强层的电子亲和力。 未掺杂的隧道增强层和p型III族氮化物层包括导电和价态能带。 未掺杂的隧道增强层的价带V1的顶部在带偏移界面处高于p型III族氮化物层的价带V2的顶部,以产生未掺杂的较高浓度的孔的能力 隧道增强层在带偏移接口。 公开和要求保护附加实施例。
    • 9. 发明申请
    • HOLE BLOCKING LAYERS IN NON-POLAR AND SEMI-POLAR GREEN LIGHT EMITTING DEVICES
    • 非极性和半极绿色发光装置中的阻塞层
    • WO2013025662A1
    • 2013-02-21
    • PCT/US2012/050675
    • 2012-08-14
    • CORNING INCORPORATEDBHAT, RajaramSIZOV, Dmitry SergeevichZAH, Chung-En
    • BHAT, RajaramSIZOV, Dmitry SergeevichZAH, Chung-En
    • H01S5/30
    • H01S5/2004B82Y20/00H01L33/02H01L33/06H01L33/32H01S5/2009H01S5/3202H01S5/34333
    • Light emitting devices are provided comprising an active region interposed between n-type and p-type sides of the device and a hole blocking layer interposed between the active region and the n-type side of the device. The active region comprises an active MQW structure and is configured for electrically-pumped stimulated emission of photons in the green portion of the optical spectrum. The n-type side of the light emitting device comprises an n-doped semiconductor region. The p-type side of the light emitting device comprises a p-doped semiconductor region. The n-doped semiconductor region comprises an n-doped non-polar or n-doped semi-polar substrate. Hole blocking layers according to the present disclosure comprise an n-doped semiconductor material and are interposed between the non-polar or semi-polar substrate and the active region of the light emitting device. The hole blocking layer (HBL) composition is characterized by a wider bandgap than that of the quantum well barrier layers of the active region.
    • 提供发光器件,其包括插入在器件的n型和p型侧之间的有源区和插入在器件的有源区和n型侧之间的空穴阻挡层。 有源区域包括有源MQW结构,并且被配置为在光谱的绿色部分中电激发受激发射的光子。 发光器件的n型侧包括n掺杂半导体区域。 发光器件的p型侧包括p掺杂半导体区域。 n掺杂半导体区域包括n掺杂的非极性或n掺杂的半极性衬底。 根据本公开的空穴阻挡层包括n掺杂半导体材料,并且介于非极性或半极性衬底和发光器件的有源区之间。 空穴阻挡层(HBL)组合物的特征在于具有比有源区的量子阱势垒层更宽的带隙。