Abstract:
System and method generating a polycrystalline thin film with a particular crystalline orientation for use as thin film transistors, microelectronic devices and the like. In one exemplary embodiment, a polycrystalline silicon thin film that has a substantially uniform crystalline orientation is produced so that its crystals are provided in at least one direction. The crystalline orientation may be any low index orientation and may be achieved with sequential lateral solidification. The polycrystalline thin film may then be crystallized in a direction that is perpendicular to the first direction by, e.g., a sequential lateral solidification procedure so that the crystalline orientation is approximately the same as the first direction, and is substantially uniform in all directions.
Abstract:
PROBLEM TO BE SOLVED: To provide an SiC single crystal ingot from which high quality SiC single crystal wafers having intended characteristics can be manufactured with high yield, and a method for manufacturing the same. SOLUTION: The SiC single crystal ingot is characterized in that the maximum value of the concentration of a dopant element in an SiC single crystal is 17 atoms/cm 3 and the maximum value of the concentration of the dopant element is ≤50 times of the minimum value. The method for manufacturing the same is also provided. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract translation:要解决的问题:提供一种可以以高产率制造具有预期特性的高质量SiC单晶晶片的SiC单晶锭及其制造方法。 解决方案:SiC单晶锭的特征在于,SiC单晶中的掺杂元素的浓度的最大值为<5×10 17原子/ cm 3, / SP>,掺杂剂元素的浓度的最大值为最小值的50倍。 还提供了其制造方法。 版权所有(C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a laser light irradiation apparatus and method therefor wherein, when a diffraction optical element is irradiated with laser light via a beam expander optical system, error of irradiation position is reduced with laser light to the diffraction optical element. SOLUTION: Laser light oscillated from a laser oscillator is expanded in the scale of the laser light via a beam expander optical system composed of two sets of lenses, and is then made to enter a diffraction optical element. In that case, exit point of the laser light, the first lens, and the second lens are arranged such that the position of the exit point of the laser light and the position of the second lens satisfy a conjugate relation with respect to the first lens. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
The present disclosure controls the heat source unit such that a to-be-processed object in which a hydrogen-containing to-be-processed layer is formed is irradiated with light in two stages, and thus the electrical characteristics of a semiconductor device may be suppressed and prevented from being deteriorated due to hydrogen. That is, ultraviolet light (UV) which is firstly radiated may induce a chemical reaction for separating Si—H bonds in the to-be-processed layer, and infrared light (IR) which is secondly radiated may induce a thermal reaction for vaporizing the separated hydrogen from the Si—H bonds. As such, both a chemical reaction for separating bonds of hydrogen and other ions in the to-be-processed layer and a thermal reaction for vaporizing hydrogen are performed, and thus hydrogen may be more easily removed than a temperature at which hydrogen is vaporized from the to-be-processed layer by only a thermal reaction.
Abstract:
According to one embodiment, a laser annealing method includes: detecting an intensity distribution of a laser light formed as a line beam by a line beam optical system; dividing width in short axis direction of the line beam in the detected intensity distribution by number of times of the irradiation per one site and partitioning the width; and calculating increment of crystal grain size of a non-crystalline thin film for energy density corresponding to wave height of the partitioned intensity distribution, and summing the increments by number of times of pulse irradiation, when energy density of the laser light is larger than a threshold, the crystal grain size of the non-crystalline thin film taking a downward turn at the threshold, the increment summed before the energy density exceeds the threshold being set to zero.
Abstract:
Provided is a monocrystalline silicon carbide ingot containing a dopant element, wherein a maximum concentration of the dopant element is less than 5×1017 atoms/cm3 and the maximum concentration is 50 times or less than that of a minimum concentration of the dopant element. Also provided is a monocrystalline silicon carbide wafer made by cutting and polishing the monocrystalline silicon carbide ingot, wherein a electric resistivity at room temperature of the wafer is 5×103 Ωcm or more. Further provided is a method for manufacturing the monocrystalline silicon carbide including growing the monocrystalline silicon carbide on a seed crystal from a sublimation material by a sublimation method. The sublimation material includes a solid material containing a dopant element, and the specific surface of the solid material containing the dopant element is 0.5 m2/g or less.
Abstract:
The disclosed subject matter relates to systems and methods for preparing epitaxially textured polycrystalline films. In one or more embodiments, the method for making a textured thin film includes providing a precursor film on a substrate, the film includes crystal grains having a surface texture and a non-uniform degree of texture throughout the thickness of the film, wherein at least a portion of the this substrate is transparent to laser irradiation; and irradiating the textured precursor film through the substrate using a pulsed laser crystallization technique at least partially melt the film wherein the irradiated film crystallizes upon cooling to form crystal grains having a uniform degree of texture.