photocurrent

简明释义

英[ˈfəʊtə(ʊ)ˌkʌr(ə)nt]美[ˈfoʊtoʊˌkɜːrənt]

n. [电子] 光电流

英英释义

单词用法

同义词

反义词

例句

1.The calculated positions of several photocurrent peaks are in good agreement with the experimental results.

理论计算出的几个光电流峰位置与实验测量的结果符合较好。

2.The amplifier input is a voltage proportional to the photocurrent signal produced by a photodiode, which is irradiated by a modulated light beam at the same chopper frequency.

放大器输入为电压信号，与光敏二极管产生的光电流信号成比例。调制光柱以断路器同样的频率照射光敏二极管。

3.The amplified photocurrent (about 10 times) can increase the sensitivity of the image sensor very much.

光电流放大10倍后再去积分、输出，使器件灵敏度大大提高。

4.The monochromatic photocurrent of photocathode actually reflects its quantum yield under the monochromatic light.

多碱光电阴极的单色光电流实质上反映的是其在该单色光照射下的量子产额。

5.Experiments were done to probe into the characteristics of APD. The relationships between avalanche voltage, dark current, photocurrent, NEP and temperature were educed separately.

通过实验探讨了APD的温度特性，得到了APD的雪崩电压、暗电流、光电流、等效噪声功率与温度的关系。

6.The initial phase difference of the fiber interferometer is calculated by measuring the interference photocurrent and the photocurrents from the two fiber arms based on a temperature control plat.

利用恒温控制平台，通过测量干涉光电流和干涉仪两臂光电流的方法，实现了对全光纤干涉仪两臂初相位差的测量。

7.The initial phase difference of the fiber interferometer is calculated by measuring the interference photocurrent and the photocurrents from the two fiber arms based on a temperature control plat.

利用恒温控制平台，通过测量干涉光电流和干涉仪两臂光电流的方法，实现了对全光纤干涉仪两臂初相位差的测量。

8.The automatic measurement system and the data processing method are discussed for microspot photocurrent spectrum and reflection spectrum of semiconductor optoelectronic devices.

叙述了为测量半导体光电器件的光电流谱和光反射谱所构成的自动测量系统及其数据处理方法。

9.Photosensitive electrodes with different thicknesses of film had been prepared. The relation between the thickness of film and photocurrent had been studied.

制备了不同膜厚的光敏电极，研究了膜厚和光电流的关系。

10.The solar cell generates a significant amount of photocurrent 光电流 when exposed to sunlight.

当太阳能电池暴露在阳光下时，会产生大量的光电流。

11.In photodetectors, the photocurrent 光电流 is directly proportional to the incident light intensity.

在光电探测器中，光电流与入射光强度成正比。

12.Researchers are studying how to enhance the photocurrent 光电流 in organic photovoltaic cells.

研究人员正在研究如何提高有机光伏电池中的光电流。

13.The efficiency of the device can be measured by the maximum photocurrent 光电流 it can produce.

设备的效率可以通过它能够产生的最大光电流来衡量。

14.A higher photocurrent 光电流 indicates better performance of the solar panel under low light conditions.

更高的光电流表明太阳能电池板在低光照条件下的性能更好。

作文

The concept of photocurrent is fundamental in the field of photonics and semiconductor physics. To understand photocurrent, we must first explore its origins and applications. Photocurrent refers to the electric current that is generated when light falls on a material, typically a semiconductor. This phenomenon occurs due to the photoelectric effect, where photons excite electrons, allowing them to move freely and create a flow of electricity. The efficiency of this process is crucial in various technologies, particularly in solar cells and photodetectors. In solar energy applications, photocurrent plays a pivotal role. Solar panels convert sunlight into electricity through the generation of photocurrent. When sunlight strikes the surface of the solar cell, it energizes the electrons, creating electron-hole pairs. These charged particles are then directed by an internal electric field to produce a usable electric current. The amount of photocurrent generated is directly proportional to the intensity of the light that hits the solar panel, making it essential for maximizing energy conversion efficiency. Moreover, photocurrent is also integral in the functioning of photodetectors, which are devices designed to sense light. In applications ranging from cameras to optical communication systems, photodetectors rely on the generation of photocurrent to detect light signals. When light enters the photodetector, it generates a photocurrent that can be measured and translated into electronic signals. This capability is vital for various technologies, including fiber-optic communication, where data is transmitted as light pulses. Understanding the factors that influence photocurrent is essential for improving device performance. Factors such as material composition, temperature, and light wavelength can significantly affect the amount of photocurrent produced. For instance, different semiconductor materials have unique bandgap energies, which determine their sensitivity to specific wavelengths of light. By optimizing these materials, researchers can enhance the efficiency of solar cells and photodetectors, leading to better performance and broader applications. Additionally, advancements in nanotechnology have opened new avenues for enhancing photocurrent generation. Nanostructured materials can increase the surface area available for light absorption, thereby boosting the overall photocurrent output. Techniques such as surface plasmon resonance and quantum dot incorporation are being explored to maximize light absorption and improve the efficiency of devices that rely on photocurrent. In conclusion, the term photocurrent encapsulates a critical aspect of modern technology, particularly in the realms of renewable energy and optical sensing. As we continue to innovate and develop new materials and technologies, understanding and harnessing photocurrent will be key to driving advancements in efficiency and performance. The ongoing research in this area promises exciting developments that could lead to more sustainable energy solutions and enhanced capabilities in light detection and measurement. Thus, mastering the concept of photocurrent not only enriches our understanding of physics but also empowers us to contribute to the technological advancements of the future.

“光电流”这个概念在光子学和半导体物理领域中至关重要。要理解“光电流”，我们首先必须探讨它的起源和应用。“光电流”是指当光照射到材料上时产生的电流，通常是半导体。当光子激发电子时，这种现象发生，从而使电子能够自由移动并产生电流。这一过程的效率对于各种技术尤其重要，特别是在太阳能电池和光电探测器中。 在太阳能应用中，“光电流”发挥着关键作用。太阳能电池通过产生“光电流”将阳光转化为电能。当阳光照射到太阳能电池的表面时，它会激活电子，形成电子-空穴对。这些带电粒子随后被内部电场引导，以产生可用的电流。产生的“光电流”量与照射太阳能电池的光强成正比，因此最大限度地提高能量转换效率至关重要。 此外，“光电流”在光电探测器的功能中也至关重要。光电探测器是设计用于感应光的设备，应用范围从相机到光通信系统，光电探测器依赖于“光电流”的产生来检测光信号。当光进入光电探测器时，会产生一个可以测量并转化为电子信号的“光电流”。这一能力对于各种技术至关重要，包括光纤通信，其中数据以光脉冲的形式传输。 理解影响“光电流”的因素对于提高设备性能至关重要。材料成分、温度和光波长等因素都会显著影响产生的“光电流”量。例如，不同的半导体材料具有独特的带隙能量，这决定了它们对特定光波长的敏感性。通过优化这些材料，研究人员可以提高太阳能电池和光电探测器的效率，从而实现更好的性能和更广泛的应用。 此外，纳米技术的进步为增强“光电流”产生开辟了新的途径。纳米结构材料可以增加可用于光吸收的表面积，从而提升整体“光电流”输出。表面等离子体共振和量子点掺入等技术正在被探索，以最大限度地提高光吸收并改善依赖“光电流”的设备的效率。 总之，“光电流”这一术语概括了现代技术中的一个关键方面，特别是在可再生能源和光学传感领域。随着我们继续创新和开发新材料和技术，理解和利用“光电流”将是推动效率和性能进步的关键。该领域的持续研究承诺带来令人兴奋的发展，可能导致更可持续的能源解决方案以及增强的光检测和测量能力。因此，掌握“光电流”这一概念不仅丰富了我们对物理学的理解，还使我们能够为未来技术进步做出贡献。