positive charge carrier

简明释义

正电荷载流子

英英释义

例句

1.The presence of positive charge carriers 正电荷载流子 in a solution can affect its conductivity significantly.

溶液中positive charge carriers 正电荷载流子 的存在会显著影响其导电性。

2.In electrochemistry, the flow of positive charge carriers 正电荷载流子 is essential for the conduction of electricity.

在电化学中，positive charge carriers 正电荷载流子 的流动对电力的导电性至关重要。

3.In semiconductor physics, a positive charge carrier 正电荷载流子 is often referred to as a hole.

在半导体物理中，positive charge carrier 正电荷载流子 通常被称为孔。

4.In a p-type semiconductor, positive charge carriers 正电荷载流子 play a crucial role in conducting electricity.

在p型半导体中，positive charge carriers 正电荷载流子 在导电中起着关键作用。

5.The efficiency of solar cells can be improved by optimizing the movement of positive charge carriers 正电荷载流子 within the material.

通过优化材料中positive charge carriers 正电荷载流子 的移动，可以提高太阳能电池的效率。

作文

In the realm of physics and electrical engineering, understanding the concept of charge carriers is crucial for grasping how electric currents flow through various materials. Among these charge carriers, we encounter two primary types: negative charge carriers, typically electrons, and positive charge carriers, known as holes. A positive charge carrier refers specifically to a deficiency of electrons in a semiconductor material, which can be thought of as a 'hole' that acts as a carrier of positive charge. This phenomenon is particularly significant in the context of semiconductor physics, where both types of charge carriers play essential roles in the conduction of electricity.Semiconductors are unique materials that have electrical conductivity between that of conductors and insulators. They are the backbone of modern electronics, found in devices such as transistors, diodes, and solar cells. The behavior of positive charge carriers is particularly important in p-type semiconductors, where the introduction of certain impurities, known as dopants, creates an abundance of holes. These holes facilitate the movement of charge within the material, allowing for the efficient transfer of electrical energy.When a voltage is applied across a semiconductor, the electrons (negative charge carriers) move toward the positive terminal, while the positive charge carriers or holes move toward the negative terminal. This movement of charge carriers is what constitutes an electric current. In essence, while electrons carry a negative charge, the absence of an electron (the hole) behaves as if it possesses a positive charge. This duality is fundamental to the operation of many electronic devices.Moreover, the interaction between negative and positive charge carriers is critical in determining the overall conductivity of a semiconductor. The recombination of electrons and holes leads to a reduction in conductivity, while their separation enhances it. Understanding this balance is vital for engineers and scientists working on improving semiconductor materials and devices.In practical applications, the manipulation of positive charge carriers is essential for designing efficient electronic components. For example, in photovoltaic cells, the generation of electron-hole pairs upon exposure to sunlight is harnessed to produce electric power. The effective movement of both types of charge carriers determines the efficiency of the energy conversion process. Therefore, advancements in material science often focus on enhancing the mobility of both negative and positive charge carriers to optimize device performance.In conclusion, the concept of positive charge carriers is fundamental to our understanding of electrical conduction in semiconductors. By recognizing the role that these charge carriers play in the movement of electricity, we can appreciate the intricate workings of modern electronic devices. As technology continues to advance, the study of charge carriers will remain a pivotal area of research, driving innovations in electronics and energy solutions for the future.

在物理学和电气工程领域，理解电荷载流子的概念对于掌握电流如何在各种材料中流动至关重要。在这些电荷载流子中，我们遇到两种主要类型：负电荷载流子，通常是电子，以及正电荷载流子，称为孔。正电荷载流子特指半导体材料中电子的缺失，可以被视为一种“孔”，它作为正电荷的载流子。这一现象在半导体物理学中尤为重要，其中两种类型的电荷载流子在电流的传导中发挥着基本作用。半导体是一种独特的材料，其电导率介于导体和绝缘体之间。它们是现代电子的支柱，存在于晶体管、二极管和太阳能电池等设备中。正电荷载流子的行为在p型半导体中尤为重要，在这种半导体中，通过引入某些杂质（称为掺杂剂），创造出丰富的孔。这些孔促进了电荷在材料中的移动，从而允许电能的高效转移。当对半导体施加电压时，电子（负电荷载流子）朝向正极移动，而正电荷载流子或孔则朝向负极移动。这种电荷载流子的移动构成了电流。实际上，虽然电子携带负电荷，但电子的缺失（孔）表现得像是具有正电荷。这种双重性是许多电子设备操作的基础。此外，负电荷载流子与正电荷载流子之间的相互作用对于确定半导体的整体导电性至关重要。电子和孔的复合会导致导电性降低，而它们的分离则增强导电性。理解这种平衡对于从事改进半导体材料和设备的工程师和科学家至关重要。在实际应用中，操控正电荷载流子对于设计高效的电子元件至关重要。例如，在光伏电池中，阳光照射下产生的电子-孔对被利用来产生电力。两种类型的电荷载流子的有效移动决定了能量转换过程的效率。因此，材料科学的进步往往集中在提高负电荷和正电荷载流子的迁移率，以优化设备性能。总之，正电荷载流子的概念是我们理解半导体中电导的重要基础。通过认识这些电荷载流子在电流移动中所起的作用，我们可以欣赏现代电子设备的复杂工作原理。随着技术的不断进步，对电荷载流子的研究将继续成为一个关键领域，推动未来电子和能源解决方案的创新。