recombination velocity

简明释义

复合速度

英英释义

例句

1.The model predicts that the recombination velocity 重组速度 will vary with temperature changes.

该模型预测重组速度会随着温度变化而变化。

2.Higher recombination velocity 重组速度 can lead to reduced performance in electronic devices.

较高的重组速度可能导致电子设备性能降低。

3.In this experiment, we focused on the recombination velocity 重组速度 of minority carriers.

在这个实验中，我们专注于少数载流子的重组速度。

4.Understanding the recombination velocity 重组速度 is crucial for improving solar cell efficiency.

理解重组速度对于提高太阳能电池效率至关重要。

5.The study measured the recombination velocity 重组速度 of charge carriers in the semiconductor material.

这项研究测量了半导体材料中载流子的重组速度。

作文

In the field of physics and materials science, the term recombination velocity refers to the rate at which charge carriers, such as electrons and holes, recombine in a semiconductor material. This concept is crucial for understanding the efficiency of electronic devices, particularly solar cells and light-emitting diodes (LEDs). The recombination velocity is influenced by various factors including temperature, material quality, and the presence of impurities. To explain this further, let’s consider a semiconductor under illumination. When light hits the semiconductor, it generates electron-hole pairs. These pairs are essential for the conduction of electricity; however, they do not last indefinitely. The recombination velocity determines how quickly these pairs recombine, affecting the overall performance of the device. A high recombination velocity can lead to a loss of charge carriers before they can contribute to electric current, thereby reducing the efficiency of the device. In solar cells, for instance, maximizing the time that electron-hole pairs exist is critical for converting sunlight into usable electrical energy. Researchers strive to develop materials with low recombination velocity to enhance the longevity of these charge carriers. This is often achieved through improving the purity of the semiconductor material and optimizing its structure. Moreover, the recombination velocity is not just a static value; it can change based on external conditions. For example, increasing the temperature typically increases the kinetic energy of the charge carriers, which can lead to a higher rate of recombination. Understanding this relationship helps engineers design better thermal management systems for electronic devices. In addition to its significance in photovoltaics, the recombination velocity also plays a vital role in the development of LEDs. In this application, a low recombination velocity is desired to ensure that electrons and holes recombine efficiently to emit light. If the recombination happens too quickly without emitting photons, the LED will not function effectively. Therefore, researchers focus on engineering materials that can maintain a balance between recombination rates and light emission efficiency. In conclusion, the concept of recombination velocity is fundamental in the realm of semiconductors and has far-reaching implications in the development of modern electronic devices. By controlling and optimizing this parameter, scientists and engineers can significantly enhance the performance of solar cells, LEDs, and other semiconductor-based technologies. As we continue to advance in this field, a deeper understanding of recombination velocity will be essential for creating more efficient and sustainable energy solutions.

在物理学和材料科学领域，术语recombination velocity指的是电荷载流子（如电子和空穴）在半导体材料中重组的速率。这个概念对于理解电子设备的效率至关重要，尤其是太阳能电池和发光二极管（LED）。recombination velocity受多种因素的影响，包括温度、材料质量和杂质的存在。 为了进一步解释这一点，让我们考虑一个照明下的半导体。当光线照射到半导体时，会产生电子-空穴对。这些对对于电流的导电至关重要；然而，它们并不会无限期地存在。recombination velocity决定了这些对重组的速度，影响设备的整体性能。高recombination velocity可能会导致电荷载流子在能够贡献电流之前就重新组合，从而降低设备的效率。 例如，在太阳能电池中，最大化电子-空穴对存在的时间对于将阳光转化为可用电能至关重要。研究人员努力开发低recombination velocity的材料，以增强这些电荷载流子的持久性。这通常通过改善半导体材料的纯度和优化其结构来实现。 此外，recombination velocity不仅仅是一个静态值；它可以根据外部条件变化。例如，增加温度通常会增加电荷载流子的动能，这可能导致更高的重组速率。理解这种关系有助于工程师设计更好的热管理系统以应对电子设备。 除了在光伏方面的重要性外，recombination velocity在LED的发展中也发挥着至关重要的作用。在这种应用中，低recombination velocity是理想的，以确保电子和空穴有效地重组以发出光。如果重组发生得太快而没有发出光子，LED将无法有效工作。因此，研究人员专注于工程材料，以保持重组速率和光发射效率之间的平衡。 总之，recombination velocity的概念在半导体领域是基础性的，并对现代电子设备的发展产生深远影响。通过控制和优化这一参数，科学家和工程师可以显著提高太阳能电池、LED和其他基于半导体的技术的性能。随着我们在这一领域的不断进步，对recombination velocity的更深入理解将对于创造更高效和可持续的能源解决方案至关重要。