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    • 22. 发明申请
    • ELECTRICAL MEASUREMENTS IN SAMPLES
    • 样品中的电气测量
    • WO2006051550A2
    • 2006-05-18
    • PCT/IL2005/001201
    • 2005-11-15
    • YEDA RESEARCH AND DEVELOPMENT COMPANY LTD.COHEN, HagaiLUBOMIRSKY, Igor
    • COHEN, HagaiLUBOMIRSKY, Igor
    • G01R31/302
    • G01N27/66G01N2223/076G01N2223/079G01N2223/081
    • A method and device are presented for measuring the electrical properties of a specimen. The specimen is excited with high energy radiation to cause emission of internal charged particles from the specimen. Electrical power is supplied to a circuit, that is formed by the specimen and any added component connected to a back contact of the specimen. The electric power supply includes at least one of the following: irradiating the circuit with low energy charged particles; subjecting the circuit to an external field of the kind affecting the flux of emitted internal charged particles, and supplying a bias voltage to the back contact of the specimen. During the power supply to the specimen, at least one of the following is carried out: an electric current through the specimen is measured, and the emitted charged particles are analyzed versus their energy (using a contactless voltmeter) which provides local potential values at chemical entities of the specimen. This technique enables determination of rich, chemically resolved, electrical properties of a specimen, such as I-V characteristic, and/or evaluation of a work function characteristic, and/or characterization of electric leakage or breakdown conditions of the sample, and/or characterization of accumulation of charge within at least one region of the sample, and/or chemically resolved photovoltaic characteristics (photovoltage and/or photocurrent) of the sample.
    • 提出了一种用于测量样本的电特性的方法和装置。 用高能辐射激发试样以引起样品内部带电粒子的发射。 向电路提供电源,该电路由样本和与样本的背面触点连接的任何附加组件形成。 电源包括以下中的至少一个:用低能量带电粒子照射电路; 使电路经受影响发射的内部带电粒子的通量的外部场,并且向样本的背部触点提供偏置电压。 在向试样供电期间,至少执行下列操作之一:测量通过试样的电流,并分析发射的带电粒子与它们的能量(使用非接触式电压表)的比较,该能量在化学试剂中提供局部电位值 标本的实体。 该技术能够确定样本的丰富的,化学分辨的电特性,例如IV特性,和/或评估功函数特性,和/或表征样本的漏电或击穿条件,和/或表征 电荷在样品的至少一个区域内的积累和/或样品的化学分解的光伏特性(光电压和/或光电流)。
    • 23. 发明公开
    • THREE-DIMENSIONAL IMAGING IN CHARGED-PARTICLE MICROSCOPY
    • 带电粒子显微镜的三维成像
    • EP3240013A1
    • 2017-11-01
    • EP16166998.1
    • 2016-04-26
    • FEI Company
    • Boughorbel, FaysalPotocek, PavelGestmann, Ingo
    • H01J37/22H01J37/28G01N23/22
    • H01J37/28G01N23/225G01N2223/079G01N2223/08G01N2223/423H01J37/20H01J37/222H01J37/244H01J2237/226
    • A method of investigating a specimen using charged-particle microscopy, comprising the following steps:
      (a) On a surface of the specimen, selecting a virtual sampling grid extending in an XY plane and comprising grid nodes to be impinged upon by a charged-particle probing beam during a two-dimensional scan of said surface;
      (b) Selecting a landing energy E i for said probing beam, with an associated nominal Z penetration depth d i below said surface;
      (c) At each of said nodes, irradiating the specimen with said probing beam and detecting output radiation emanating from the specimen in response thereto, thereby generating a scan image l i ;
      (d) Repeating steps (b) and (c) for a series {E i } of different landing energies, corresponding to an associated series {d i } of different penetration depths,
      further comprising the following steps:
      (e) Pre-selecting an initial energy increment ΔE i by which E i is to be altered after a first iteration of steps (b) and (c);
      (f) Associating energy increment ΔE i with a corresponding depth increment Δd in the value of d i ;
      (g) Selecting said sampling grid to have a substantially equal node pitch p in X and Y, which pitch p is matched to the value of Δd so as to produce a substantially cubic sampling voxel;
      (h) Selecting subsequent energy values in the series {E i } so as to maintain a substantially constant depth increment Δd between consecutive members of the series {d i }, within the bounds of selected minimum and maximum landing energies E min and E max , respectively.
    • 包括以下步骤:(a)在样本的表面上选择在XY平面中延伸并且包括将由带电粒子撞击的网格节点的虚拟采样网格 在所述表面的二维扫描期间探测光束; (b)为所述探测光束选择着陆能量E i,其中相关的标称Z穿透深度di低于所述表面; (c)在每个所述节点处,用所述探测光束照射样本并响应于此探测从样本发出的输出辐射,由此产生扫描图像li; (d)对与不同穿透深度的相关系列{di}对应的不同着陆能量的系列{Ei}重复步骤(b)和(c),还包括以下步骤:(e)预先选择初始 在步骤(b)和(c)的第一次迭代之后Ei将被改变的能量增量ΔEi; (f)将能量增量ΔEi与di中的相应深度增量Δd相关联; (g)选择所述采样网格在X和Y中具有基本相等的节点节距p,该节距p与Δd的值相匹配,从而产生基本上立方体的采样体素; (h)选择序列{Ei}中的后续能量值,以便在所选最小和最大着落能量Emin和Emax的界限内分别在系列{di}的连续成员之间保持基本恒定的深度增量Δd。