impurity center

简明释义

杂质中心

英英释义

例句

1.The impurity center acts as a trap for charge carriers, reducing the efficiency of the device.

杂质中心作为载流子的捕获点，降低了设备的效率。

2.Researchers are studying how impurity centers influence the conductivity of semiconductors.

研究人员正在研究杂质中心如何影响半导体的导电性。

3.The presence of an impurity center in the crystal lattice can significantly affect its optical properties.

晶格中存在的杂质中心会显著影响其光学特性。

4.Understanding the role of impurity centers is crucial for improving the performance of solar cells.

了解杂质中心的作用对于提高太阳能电池的性能至关重要。

5.In this experiment, we will analyze the effects of various impurity centers on material strength.

在这个实验中，我们将分析不同杂质中心对材料强度的影响。

作文

In the realm of semiconductor physics, the concept of an impurity center plays a crucial role in determining the electrical properties of materials. An impurity center refers to a defect or foreign atom that is introduced into a crystal lattice, which can significantly alter its conductivity and overall behavior. Understanding how these centers function is essential for the development of advanced electronic devices, such as transistors and diodes.When a pure semiconductor, like silicon, is doped with specific impurities, it creates impurity centers that either donate free electrons or create holes in the material. For instance, adding phosphorus to silicon introduces extra electrons, resulting in an n-type semiconductor. Conversely, doping silicon with boron creates holes, leading to a p-type semiconductor. This manipulation of impurity centers is fundamental to the design of various electronic components.The presence of impurity centers can also influence the optical properties of semiconductors. Certain impurities can trap electrons and emit light when they recombine, which is the principle behind light-emitting diodes (LEDs). Therefore, understanding the nature and behavior of impurity centers allows engineers to tailor materials for specific applications, enhancing their performance.Moreover, impurity centers are not always beneficial; they can also lead to unwanted scattering and reduced mobility of charge carriers, which can degrade the performance of devices. This phenomenon is particularly important in high-performance applications, where minimizing defects is critical. Researchers continuously explore methods to control and optimize impurity centers to achieve the desired balance between conductivity and durability.In conclusion, the study of impurity centers is vital for advancing semiconductor technology. By manipulating these centers, scientists and engineers can innovate new materials and devices that meet the growing demands of modern electronics. The ability to understand and control impurity centers not only enhances the performance of existing technologies but also paves the way for future advancements in the field. As we continue to push the boundaries of what is possible with semiconductors, the significance of impurity centers will undoubtedly remain at the forefront of research and development.

在半导体物理领域，impurity center（杂质中心）的概念在决定材料的电气特性方面起着至关重要的作用。impurity center指的是引入到晶体晶格中的缺陷或外来原子，这可以显著改变其导电性和整体行为。理解这些中心如何运作对于开发先进的电子设备，如晶体管和二极管至关重要。当纯净的半导体，如硅，被特定杂质掺杂时，会形成impurity centers，这些中心要么提供自由电子，要么在材料中产生空穴。例如，向硅中添加磷会引入额外的电子，从而导致n型半导体的形成。相反，用硼掺杂硅会产生空穴，形成p型半导体。这种对impurity centers的操控是各种电子元件设计的基础。impurity centers的存在也会影响半导体的光学特性。某些杂质可以捕获电子，并在重新结合时发出光，这就是发光二极管（LED）背后的原理。因此，理解impurity centers的性质和行为使工程师能够针对特定应用量身定制材料，从而提高其性能。此外，impurity centers并不总是有利的；它们也可能导致不必要的散射和载流子迁移率降低，从而降低设备的性能。这一现象在高性能应用中尤为重要，因为最小化缺陷至关重要。研究人员不断探索控制和优化impurity centers的方法，以实现导电性和耐用性之间的理想平衡。总之，研究impurity centers对于推动半导体技术的发展至关重要。通过操控这些中心，科学家和工程师可以创新新材料和设备，以满足现代电子产品日益增长的需求。理解和控制impurity centers的能力不仅增强了现有技术的性能，也为未来在该领域的进步铺平了道路。随着我们不断推动半导体技术的边界，impurity centers的重要性无疑将始终处于研究和发展的前沿。