ohmic contact

简明释义

欧姆接触

英英释义

例句

1.The performance of the device improved significantly after ensuring a proper ohmic contact (欧姆接触) between the metal and semiconductor layers.

在金属和半导体层之间确保良好的ohmic contact（欧姆接触）后，设备的性能显著提高。

2.An inadequate ohmic contact (欧姆接触) can lead to poor electrical performance in integrated circuits.

不充分的ohmic contact（欧姆接触）可能导致集成电路的电气性能差。

3.To achieve reliable device operation, it is crucial to establish low-resistance ohmic contact (欧姆接触).

为了实现可靠的设备操作，建立低阻抗的ohmic contact（欧姆接触）至关重要。

4.The researchers developed a new method to enhance the ohmic contact (欧姆接触) in thin-film transistors.

研究人员开发了一种新方法，以增强薄膜晶体管中的ohmic contact（欧姆接触）。

5.During the fabrication process, we must check the ohmic contact (欧姆接触) to avoid high resistance paths.

在制造过程中，我们必须检查ohmic contact（欧姆接触），以避免高阻抗路径。

作文

In the realm of semiconductor physics, the concept of ohmic contact is crucial for the functionality of electronic devices. An ohmic contact refers to a type of electrical junction that allows for the flow of current in both directions with minimal resistance. This characteristic is essential for ensuring that devices such as diodes, transistors, and integrated circuits operate efficiently. The efficiency of these devices largely depends on how well they can manage the flow of electrons at their interfaces, and this is where ohmic contact plays a pivotal role.To understand the significance of ohmic contact, it is important to recognize the nature of electrical contacts. There are two primary types of contacts: ohmic and rectifying. While rectifying contacts allow current to flow predominantly in one direction, ohmic contact ensures that current can pass freely in either direction. This property is vital for many applications, particularly in digital circuits where bidirectional current flow is necessary.The formation of an ohmic contact typically involves the use of materials that have similar energy band structures. When a metal is placed in contact with a semiconductor, the interface between the two materials can create a barrier that affects the flow of charge carriers. If the barrier is low enough, electrons can easily move across the junction, resulting in an ohmic contact. Conversely, if the barrier is too high, the contact may behave as a rectifying junction instead.There are several methods to achieve good ohmic contact. One common approach is to alloy the metal with the semiconductor material, which can lower the barrier height and promote better electron flow. Additionally, doping the semiconductor with specific impurities can also enhance the formation of an ohmic contact. By carefully selecting materials and processing techniques, engineers can optimize the performance of electronic devices.The importance of ohmic contact extends beyond just theoretical understanding; it has practical implications in the design and manufacturing of various electronic components. For instance, in solar cells, the efficiency of energy conversion is heavily influenced by the quality of the ohmic contact between the metal contacts and the semiconductor layers. A poor ohmic contact can lead to significant energy losses, reducing the overall performance of the solar cell.Moreover, in the field of nanoelectronics, where devices are shrinking in size, achieving reliable ohmic contact becomes even more challenging. As dimensions decrease, the effects of quantum mechanics become pronounced, and traditional methods of forming contacts may not suffice. Researchers are continuously exploring new materials and innovative techniques to ensure that ohmic contact can be maintained at the nanoscale.In conclusion, the concept of ohmic contact is fundamental to the operation of modern electronic devices. Its ability to facilitate efficient charge transport across junctions makes it indispensable in the design of semiconductors and other electronic components. Understanding the principles behind ohmic contact not only enhances our knowledge of semiconductor physics but also drives advancements in technology that impact our daily lives. As we continue to innovate and push the boundaries of electronics, the importance of achieving reliable ohmic contact will remain a key focus for engineers and researchers alike.

在半导体物理领域，欧姆接触的概念对于电子设备的功能至关重要。欧姆接触是指一种电气接点，允许电流以最小的阻力双向流动。这一特性对于确保二极管、晶体管和集成电路等设备的高效运行至关重要。这些设备的效率在很大程度上取决于它们如何管理界面处的电子流，而这正是欧姆接触发挥关键作用的地方。要理解欧姆接触的重要性，首先需要认识到电气接触的性质。接触主要有两种类型：欧姆接触和整流接触。整流接触主要允许电流单向流动，而欧姆接触则确保电流可以自由地双向流动。这一属性对于许多应用尤其重要，特别是在数字电路中，双向电流流动是必需的。欧姆接触的形成通常涉及具有相似能带结构的材料。当金属与半导体接触时，两种材料之间的界面可能会产生一个影响电荷载流子流动的势垒。如果势垒足够低，电子就可以轻松穿过接点，从而形成欧姆接触。相反，如果势垒过高，则接触可能表现为整流接点。实现良好欧姆接触的方法有几种。一种常见的方法是将金属与半导体材料合金化，这可以降低势垒高度并促进更好的电子流。此外，用特定杂质掺杂半导体也可以增强欧姆接触的形成。通过精心选择材料和加工技术，工程师可以优化电子设备的性能。欧姆接触的重要性不仅限于理论理解；它在各种电子元件的设计和制造中具有实际意义。例如，在太阳能电池中，能量转换的效率在很大程度上受到金属接触与半导体层之间欧姆接触质量的影响。差的欧姆接触可能导致显著的能量损失，从而降低太阳能电池的整体性能。此外，在纳米电子学领域，随着设备尺寸的缩小，实现可靠的欧姆接触变得更加具有挑战性。随着尺寸的减小，量子力学效应变得显著，传统的接触形成方法可能不足以满足需求。研究人员不断探索新材料和创新技术，以确保在纳米尺度上保持欧姆接触。总之，欧姆接触的概念是现代电子设备操作的基础。它能够促进接点间高效的电荷传输，使其在半导体和其他电子元件的设计中不可或缺。理解欧姆接触背后的原理不仅增强了我们对半导体物理的知识，还推动了影响我们日常生活的技术进步。随着我们不断创新并推动电子技术的边界，实现可靠的欧姆接触的重要性将始终是工程师和研究人员关注的重点。