関連する実験動画
Updated: Jul 11, 2026

09:51
Atom Probe Tomography Studies on the Cu(In,Ga)Se2 Grain Boundaries
Published on: April 22, 2013
三次元原子探査トモグラフィーによるシリコンの欠陥の周りのコットレル大気のヒ素のイメージング
Keith Thompson1, Philip L Flaitz, Paul Ronsheim
1Imago Scientific Instruments Corporation, 5500 Nobel Drive, Madison, WI 53711, USA. kthompson@imago.com
まとめ
アルセン原子のコットレル大気は,イオンインプランテーションとアンニングの後,シリコンの欠陥の周りに形成されます. これらの不純物原子のクラスターは持続し,ドーパントの変動のためにシリコンナノデバイスのスケーラビリティを潜在的に制限します.
科学分野:
- マテリアルサイエンス 材料科学
- 半導体物理学 半導体物理学
- ナノテクノロジー ナノテクノロジー
背景:
- ドーパント原子の正確な制御は,シリコンナノデバイスの電気的性質と製造に不可欠です.
- イオンインプランテーション中に導入された欠陥は,不均一なドーパント分布につながり,デバイスの性能を阻害します.
研究 の 目的:
- シリコンの欠陥の周りのコットレル大気の形成と持続を調査する.
- ドーパントの分布とデバイスのスケーラビリティに対するこれらの大気の影響を理解するために.
主な方法:
- 原子探査トモグラフィーを利用して,シリコンの欠陥の近くの原子を特定し,位置づけました.
- イオンインプランテーションとアンニング後のシリコンサンプルを分析し,ドーパントの振る舞いを観察しました.
主要な成果:
- 植入後および退火後の欠陥の周りにアルゼン原子で構成されるコットレル大気の形成が確認されました.
- これらのヒ素大気は,広範な熱処理の後でも,脱位ループと関連していることが観察されました.
結論:
- 塩素原子のコットレル大気は,シリコンのドーパント均一性を影響する重要な要因です.
- これらの持続的な不純性原子のクラスターは,シリコンベースのナノデバイスのスケーラビリティに挑戦しています.
関連する概念動画
Atomic Force Microscopy
Atomic force microscopy (AFM) is a type of scanning probe microscopy that can analyze topographic details of various specimens like ceramics, glass, polymers, and biological samples. AFM offers over 1000 times more resolution than the optical imaging system. Images generated from AFM are three-dimensional surface profiles, offering an advantage over the flat, two-dimensional images from other imaging techniques.
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
The AFM Probe
The probe is regarded as the heart of any AFM setup and comprises the...
Electron Microscope Tomography and Single-particle Reconstruction
Transmission electron microscopy (TEM) can be used to determine the 3D structure of biological samples with the help of techniques such as electron microscope tomography and single-particle reconstruction. While single-particle reconstruction can examine macromolecules and macromolecular complexes in vitro conditions only, tomography permits the study of cell components or small cells in vivo.
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Electron Tomography
Electron tomography can be performed either in TEM or STEM (scanning transmission...
Positron Emission Tomography
Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Atomic Absorption Spectroscopy: Atomization Methods
Atomic Absorption Spectroscopy (AAS) atomizes samples through flame atomization or electrothermal atomization. Flame atomization typically involves a nebulizer and spray chamber assembly to combine the sample with a fuel–oxidant mixture, creating a fine aerosol mist that enters a burner. Typically, the fuel and oxidant are combined in an approximately stoichiometric ratio. However, for atoms that are easily oxidized, a fuel-rich mixture may be more advantageous. Only about 5% of the aerosol...
Computed Tomography
Tomography refers to imaging by sections. Computed tomography (CT) is a non-invasive imaging technique that uses computers to analyze several cross-sectional X-rays to reveal minute details about structures in the body.
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
The technique was invented in the 1970s and is based on the principle that as X-rays pass through the body, they are absorbed or reflected at different levels. In the technique, a patient lies on a motorized platform while a computerized axial tomography (CAT) scanner rotates...
Imperfections in Crystal Structure: Stoichiometric Point Defects
Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...

