photoemissive

简明释义

英[ˌfoʊtoʊɪˈmɪsɪv]美[ˌfoʊtoʊɪˈmɪsɪv]

adj. [电子] 光电发射的

英英释义

单词用法

同义词

反义词

例句

1.The effect of the tube making Technique on the photoemissive property of the photocathode is described.

主要论述制管工艺对光电阴极发射性能的影响。

2.Under the action of ultrashort laser pulses the measurement of photoemissive quantum yield is different from that under the action of normal visible light.

光电薄膜在超短激光脉冲作用下的量子产额测量与普通可见光作用下量子产额的测量有很大不同。

3.Under the action of ultrashort laser pulses the measurement of photoemissive quantum yield is different from that under the action of normal visible light.

光电薄膜在超短激光脉冲作用下的量子产额测量与普通可见光作用下量子产额的测量有很大不同。

4.The new sensor utilizes a photoemissive 光电发射的 material to detect light levels more accurately.

新的传感器利用一种光电发射的材料来更准确地检测光线水平。

5.In this experiment, we will examine the photoemissive 光电发射的 properties of various metals under UV light.

在这个实验中，我们将研究不同金属在紫外光下的光电发射的特性。

6.The photoemissive 光电发射的 effect is often used in night vision technology.

光电发射的效应通常用于夜视技术。

7.Developing photoemissive 光电发射的 materials is crucial for the advancement of photodetectors.

开发光电发射的材料对光电探测器的发展至关重要。

8.The photoemissive 光电发射的 layer in the device enhances its sensitivity to incoming radiation.

设备中的光电发射的层增强了其对入射辐射的敏感性。

作文

The study of materials that exhibit photoemissive properties has gained significant attention in recent years due to their potential applications in various fields, including electronics, photonics, and energy conversion. The term photoemissive refers to the ability of certain materials to emit electrons when they are exposed to light. This phenomenon is a result of the interaction between photons and the electrons within the material, which can lead to the excitation of electrons to higher energy states. When these excited electrons return to their original state, they release energy in the form of an electron, thus demonstrating the photoemissive effect.One of the most common examples of photoemissive materials is the photoelectric effect, which was famously explained by Albert Einstein in 1905. This effect occurs when light strikes a metal surface, causing the emission of electrons. The understanding of this effect laid the foundation for the development of many modern technologies, such as solar cells, photodetectors, and vacuum tubes. In solar cells, for instance, photoemissive materials convert sunlight into electrical energy, making them crucial for renewable energy applications.In addition to solar energy, photoemissive materials are also pivotal in the field of imaging technology. Devices such as night vision goggles and image intensifiers rely on photoemissive materials to enhance low-light images. These devices work by capturing photons from the environment and using photoemissive materials to amplify the signal, allowing users to see in darkness. This application is particularly important for military and security purposes, where visibility can be critical.Research into photoemissive materials has also led to advancements in quantum computing and information technology. Quantum dots, which are semiconductor particles only a few nanometers in size, exhibit photoemissive properties that can be harnessed for quantum information processing. These tiny particles can emit light of specific wavelengths when excited, making them valuable for developing new types of displays and sensors.Moreover, the exploration of novel photoemissive materials, such as organic semiconductors and perovskites, has opened up new avenues for innovation. Organic light-emitting diodes (OLEDs), for example, utilize photoemissive organic compounds to produce light and are widely used in television and smartphone screens due to their superior color quality and energy efficiency.In conclusion, the importance of photoemissive materials cannot be overstated. Their unique properties have led to groundbreaking advancements in various technologies, from renewable energy solutions to imaging systems and beyond. As research continues to uncover new photoemissive materials and improve existing ones, we can expect to see even more innovative applications that will shape the future of technology and energy usage. Understanding the principles behind photoemissive materials is essential for anyone interested in the cutting-edge developments in science and engineering today.

近年来，具有光电发射特性的材料研究受到了广泛关注，这主要是由于它们在电子学、光子学和能源转换等多个领域的潜在应用。术语光电发射指的是某些材料在暴露于光线时释放电子的能力。这一现象是光子与材料内部电子之间相互作用的结果，这种相互作用可以导致电子被激发到更高的能量状态。当这些激发的电子返回到原始状态时，它们会以电子的形式释放能量，从而展示出光电发射效应。光电发射材料最常见的例子之一是光电效应，这一效应在1905年由阿尔伯特·爱因斯坦著名地解释过。当光照射到金属表面时，会导致电子的发射，这就是光电效应的发生。对这一效应的理解为许多现代技术的发展奠定了基础，例如太阳能电池、光电探测器和真空管。例如，在太阳能电池中，光电发射材料将阳光转化为电能，使其在可再生能源应用中至关重要。除了太阳能，光电发射材料在成像技术领域也至关重要。夜视仪和图像增强器等设备依赖于光电发射材料来增强低光图像。这些设备通过捕捉环境中的光子并利用光电发射材料放大信号，使用户能够在黑暗中看见。这一应用对于军事和安全目的尤为重要，因为能见度可能至关重要。对光电发射材料的研究还推动了量子计算和信息技术的进步。量子点是几纳米大小的半导体颗粒，展现出可用于量子信息处理的光电发射特性。这些微小的颗粒在被激发时可以发出特定波长的光，使其在开发新型显示器和传感器方面具有重要价值。此外，对新型光电发射材料的探索，如有机半导体和钙钛矿，开启了创新的新途径。例如，有机发光二极管（OLED）利用光电发射有机化合物产生光，并因其卓越的色彩质量和能效而广泛应用于电视和智能手机屏幕。总之，光电发射材料的重要性不容小觑。它们独特的特性推动了各种技术的突破性进展，从可再生能源解决方案到成像系统及其他领域。随着研究不断揭示新的光电发射材料并改进现有材料，我们可以期待看到更多创新应用，这将塑造未来的技术和能源使用。理解光电发射材料背后的原理对于任何对当今科学和工程前沿发展感兴趣的人来说都是至关重要的。