double heterojunction

简明释义

双异质结

英英释义

例句

1.The efficiency of organic light-emitting diodes can be enhanced by employing a double heterojunction 双异质结 architecture.

通过采用双异质结结构，能够提高有机发光二极管的效率。

2.The double heterojunction 双异质结 design minimizes electron leakage in transistors.

双异质结设计减少了晶体管中的电子泄漏。

3.In semiconductor physics, a double heterojunction 双异质结 can enhance the performance of lasers.

在半导体物理中，双异质结可以增强激光器的性能。

4.The research team developed a new solar cell using a double heterojunction 双异质结 structure to improve efficiency.

研究团队开发了一种新的太阳能电池，使用了双异质结结构来提高效率。

5.Researchers are exploring the potential of double heterojunction 双异质结 solar cells for next-generation energy solutions.

研究人员正在探索双异质结太阳能电池在下一代能源解决方案中的潜力。

作文

The concept of a double heterojunction is pivotal in the field of semiconductor physics and plays a crucial role in the development of modern electronic devices. A double heterojunction refers to a structure that consists of two different semiconductor materials, each with distinct energy band gaps, layered together to form a junction. This configuration enhances the performance of devices such as lasers, photodetectors, and solar cells by improving efficiency and reducing recombination losses.Understanding the significance of a double heterojunction requires an exploration of its components. The term 'heterojunction' itself denotes a junction formed between two dissimilar semiconductor materials. When we introduce a second layer of differing material, we create a double heterojunction, which can offer superior electronic and optical properties compared to a single heterojunction. This is particularly important in applications where charge carrier mobility and light emission are critical.In practical applications, the double heterojunction structure allows for better control over the energy levels within the device, leading to enhanced performance. For instance, in semiconductor lasers, a double heterojunction can confine carriers more effectively, resulting in higher output power and improved efficiency. Similarly, in photovoltaic cells, this structure helps in maximizing light absorption and minimizing energy loss, which is essential for achieving higher conversion efficiencies.Moreover, the fabrication of double heterojunction structures has been made feasible through advanced techniques such as molecular beam epitaxy (MBE) and metal-organic chemical vapor deposition (MOCVD). These methods allow for precise control over the thickness and composition of the layers, enabling engineers to tailor the properties of the heterojunctions to meet specific requirements.Despite the advantages of double heterojunction structures, there are challenges associated with their implementation. One of the primary concerns is the lattice mismatch between the different materials used in the junction. If the lattice constants of the two materials differ significantly, it can lead to defects at the interface, adversely affecting the performance of the device. Therefore, careful selection of materials and optimization of growth conditions are essential to ensure the integrity of the double heterojunction.In conclusion, the double heterojunction is a fundamental concept in semiconductor technology that significantly enhances the performance of various electronic and optoelectronic devices. Its ability to confine charge carriers and optimize energy levels makes it a valuable tool in the quest for more efficient and powerful devices. As research continues to advance in this field, we can expect to see even more innovative applications of double heterojunction structures in the future, paving the way for next-generation technologies that will shape our world.

“双异质结”的概念在半导体物理领域至关重要，并在现代电子设备的发展中发挥着关键作用。“双异质结”是指由两种不同的半导体材料组成的结构，每种材料具有不同的能带宽度，层叠在一起形成一个结。这种配置通过提高效率和减少复合损失，增强了激光器、光电探测器和太阳能电池等设备的性能。理解“双异质结”的重要性需要探讨其组成部分。“异质结”一词本身表示由两种不同的半导体材料形成的结。当我们引入第二层不同的材料时，就会形成一个“双异质结”，与单一异质结相比，这可以提供更优越的电子和光学特性。这在载流子迁移率和光发射至关重要的应用中尤为重要。在实际应用中，“双异质结”结构允许更好地控制器件内的能级，从而提高性能。例如，在半导体激光器中，“双异质结”可以更有效地限制载流子，从而提高输出功率和效率。同样，在光伏电池中，这种结构有助于最大限度地吸收光线并减少能量损失，这对于实现更高的转换效率至关重要。此外，通过分子束外延（MBE）和金属有机化学气相沉积（MOCVD）等先进技术，使得制造“双异质结”结构成为可能。这些方法允许对层的厚度和成分进行精确控制，使工程师能够根据特定要求调整异质结的特性。尽管“双异质结”结构具有诸多优势，但在其实施过程中也面临挑战。其中一个主要问题是所用材料之间的晶格不匹配。如果两种材料的晶格常数差异显著，可能导致界面处出现缺陷，从而对器件性能产生不利影响。因此，仔细选择材料和优化生长条件对于确保“双异质结”的完整性至关重要。总之，“双异质结”是半导体技术中的基本概念，显著增强了各种电子和光电设备的性能。它限制载流子和优化能级的能力，使其成为追求更高效、更强大设备的重要工具。随着这一领域研究的不断深入，我们可以期待在未来看到“双异质结”结构的更多创新应用，为塑造我们世界的下一代技术铺平道路。