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    • 2. 发明授权
    • Schottky diode with silver layer contacting the ZnO and MgxZn1−xO films
    • 具有银层的肖特基二极管与ZnO和MgxZn1-xO膜接触
    • US07400030B2
    • 2008-07-15
    • US11042533
    • 2005-01-25
    • Yicheng LuHaifeng ShengSriram MuthukumarNuri William EmanetogluJian ZhongShaohua Liang
    • Yicheng LuHaifeng ShengSriram MuthukumarNuri William EmanetogluJian ZhongShaohua Liang
    • H01L29/04
    • H01L31/0392H01L31/022408H01L31/108H01L31/1123Y02E10/50
    • In the present invention, there is provided semiconductor devices such as a Schottky UV photodetector fabricated on n-type ZnO and MgxZn1-xO epitaxial films. The ZnO and MgxZn1-xO films are grown on R-plane sapphire substrates and the Schottky diodes are fabricated on the ZnO and MgxZn1-xO films using silver and aluminum as Schottky and ohmic contact metals, respectively. The Schottky diodes have circular patterns, where the inner circle is the Schottky contact, and the outside ring is the ohmic contact. Ag Schottky contact patterns are fabricated using standard liftoff techniques, while the Al ohmic contact patterns are formed using wet chemical etching. These detectors show low frequency photoresponsivity, high speed photoresponse, lower leakage current and low noise performance as compared to their photoconductive counterparts. This invention is also applicable to optical modulators, Metal Semiconductor Field Effect Transistors (MESFETs) and more.
    • 在本发明中,提供了半导体器件,例如在n型ZnO和Mg x 1 Zn 1-x O O外延膜上制造的肖特基UV光电探测器。 ZnO和Mg x Zn 1-x O薄膜生长在R平面蓝宝石衬底上,肖特基二极管制造在ZnO和Mg < 分别使用银和铝作为肖特基和欧姆接触金属的ZnO 1-x O O膜。 肖特基二极管具有圆形图案,其中内圆是肖特基接触,外环是欧姆接触。 Ag肖特基接触图案使用标准剥离技术制造,而Al欧姆接触图案是使用湿化学蚀刻法形成的。 与其感光对手相比,这些检测器显示低频光响应,高速光响应,较低的漏电流和低噪声性能。 本发明还可应用于光学调制器,金属半导体场效应晶体管(MESFET)等。
    • 4. 发明申请
    • Zinc oxide nanotip and fabricating method thereof
    • 氧化锌纳米尖端及其制造方法
    • US20070151508A1
    • 2007-07-05
    • US11311092
    • 2005-12-19
    • Yicheng LuSriram MuthukumarNuri Emanetoglu
    • Yicheng LuSriram MuthukumarNuri Emanetoglu
    • C30B25/00C23C16/00C30B23/00C30B28/12
    • B82Y30/00B82Y15/00C30B25/02C30B29/16C30B29/60H01J1/3044H01J9/025H01J2201/30446Y10S977/811Y10T428/24802Y10T428/24917
    • In the present invention, there are provided self-assembled ZnO nanotips grown on relatively low temperatures on various substrates by metalorganic chemical vapor deposition (MOCVD). The ZnO nanotips are made at relatively low temperatures, giving ZnO a unique advantage over other wide bandgap semiconductors such as GaN and SiC. The nanotips have controlled uniform size, distribution and orientation. These ZnO nanotips are of single crystal quality, show n-type conductivity and have good optical properties. Selective growth of ZnO nanotips also has been realized on patterned (100) silicon on r-sapphire (SOS), and amorphous SiO2 on r-sapphire substrates. Self-assembled ZnO nanotips can also be selectively grown on patterned layers or islands made of a semiconductor, an insulator or a metal deposited on R-plane (01 12) Al2O3 substrates as long as the ZnO grows in a columnar structure along the c-axis [0001] of ZnO on these materials. Such self-assembled ZnO nanotips and nanotip arrays are promising for applications in field emission displays and electron emission sources, photonic bandgap devices, near-field microscopy, UV optoelectronics, and bio-chemical sensors.
    • 在本发明中,提供了通过金属有机化学气相沉积(MOCVD)在各种基底上在较低温度下生长的自组装的ZnO纳米二极管。 ZnO纳米芯片在相对低的温度下制成,使ZnO比其他宽带隙半导体(如GaN和SiC)具有独特的优势。 纳米片具有均匀的尺寸,分布和取向。 这些ZnO纳米芯片具有单晶质量,显示n型导电性,并具有良好的光学性能。 ZnO纳米片的选择性生长也已经在r-蓝宝石(SOS)上的图案化(100)硅和r-蓝宝石衬底上的无定形SiO 2上实现。 自组装ZnO纳米技术也可以选择性地生长在由半导体,绝缘体或沉积在R平面上的金属(01 12)Al 2 / 只要ZnO沿着这些材料上的ZnO的c轴[0001]以柱状结构生长,就可以进行。 这种自组装的ZnO纳米片和纳米尖端阵列对于场发射显示器和电子发射源,光子带隙器件,近场显微镜,UV光电子学和生物化学传感器的应用是有希望的。
    • 5. 发明授权
    • Zinc oxide nanotip and fabricating method thereof
    • 氧化锌纳米尖端及其制造方法
    • US06979489B2
    • 2005-12-27
    • US10243269
    • 2002-09-13
    • Yicheng LuSriram MuthukumarNuri William Emanetoglu
    • Yicheng LuSriram MuthukumarNuri William Emanetoglu
    • C30B25/02H01J1/304H01J9/02B32B15/00B32B9/04B32B3/00
    • B82Y30/00B82Y15/00C30B25/02C30B29/16C30B29/60H01J1/3044H01J9/025H01J2201/30446Y10S977/811Y10T428/24802Y10T428/24917
    • In the present invention, there are provided self-assembled ZnO nanotips grown on relatively low temperatures on various substrates by metalorganic chemical vapor deposition (MOCVD). The ZnO nanotips are made at relatively low temperatures, giving ZnO a unique advantage over other wide bandgap semiconductors such as GaN and SiC. The nanotips have controlled uniform size, distribution and orientation. These ZnO nanotips are of single crystal quality, show n-type conductivity and have good optical properties. Selective growth of ZnO nanotips also has been realized on patterned (100) silicon on r-sapphire (SOS), and amorphous SiO2 on r-sapphire substrates. Self-assembled ZnO nanotips can also be selectively grown on patterned layers or islands made of a semiconductor, an insulator or a metal deposited on R-plane (01{overscore (1)}2) Al2O3 substrates as long as the ZnO grows in a columnar stucture along the c-axis [0001] of ZnO on these materials. Such self-assembled ZnO nanotips and nanotip arrays are promising for applications in field emission displays and electron emission sources, photonic bandgap devices, near-field microscopy, UV optoelectronics, and bio-chemical sensors.
    • 在本发明中,提供了通过金属有机化学气相沉积(MOCVD)在各种基底上在较低温度下生长的自组装ZnO纳米二极管。 ZnO纳米芯片在相对低的温度下制成,使ZnO比其他宽带隙半导体(如GaN和SiC)具有独特的优势。 纳米片具有均匀的尺寸,分布和取向。 这些ZnO纳米芯片具有单晶质量,显示n型导电性,并具有良好的光学性能。 ZnO纳米片的选择性生长也已经在r-蓝宝石(SOS)上的图案化(100)硅和r-蓝宝石衬底上的无定形SiO 2上实现。 自组装ZnO纳米技术也可以选择性地生长在由R平面上沉积的半导体,绝缘体或金属制成的图案化的层或岛上(01(过滤(12)Al 2 O 2 只要ZnO沿着这些材料上的ZnO的c轴[0001]在柱状结构中生长,这些自组装的ZnO纳米尖端和纳米尖端阵列对于在场发射显示器和电子发射中的应用是有希望的 光源带隙器件,近场显微镜,紫外光电子学和生物化学传感器。
    • 10. 发明授权
    • Look-up table overdrive circuits
    • 查找表超速电路
    • US07800402B1
    • 2010-09-21
    • US11982865
    • 2007-11-05
    • Irfan RahimSriram MuthukumarWilliam Bradley VestMyron Wai Wong
    • Irfan RahimSriram MuthukumarWilliam Bradley VestMyron Wai Wong
    • H03K19/173G06F7/38
    • H03K19/17736H03K19/17728H03K19/1778
    • A programmable logic device integrated circuit or other integrated circuit may have logic circuitry that produces data signals. The data signals may be routed to other logic circuits through interconnects. The interconnects may be programmable. A level recovery circuit may be used at the end of each interconnect line to strengthen the transmitted data signal. The level recovery circuit that is attached to a given interconnect line may produce true and complementary versions of the data signal that is on that interconnect line. Level shifting circuitry may be provided to boost the data signals on the interconnects. Each interconnect line may have a level shifter circuit that receives the true and complementary versions of a data signal and that produces corresponding boosted true and complementary versions of the data signal. The boosted signals may be provided to the control inputs of complementary-metal-oxide-semiconductor transistor pass gates in programmable look-up table circuitry.
    • 可编程逻辑器件集成电路或其他集成电路可以具有产生数据信号的逻辑电路。 数据信号可以通过互连路由到其他逻辑电路。 互连可以是可编程的。 可以在每条互连线的末端使用电平恢复电路,以加强传输的数据信号。 连接到给定互连线的电平恢复电路可以产生在该互连线上的数据信号的真实和互补版本。 可以提供电平移位电路以升高互连上的数据信号。 每个互连线可以具有电平移位器电路,其接收数据信号的真实和互补版本并且产生数据信号的相应增强的真实和互补版本。 升压的信号可以提供给可编程查找表电路中的互补金属氧化物半导体晶体管栅极的控制输入。