quantum yield

简明释义

量子效率

英英释义

例句

1.Researchers are investigating ways to increase the quantum yield of solar cells.

研究人员正在探讨提高太阳能电池的量子产率的方法。

2.The quantum yield of fluorescence can vary significantly depending on the environment.

荧光的量子产率可能会因环境而显著变化。

3.The quantum yield of the photosynthetic process is crucial for understanding plant efficiency.

光合作用的量子产率对于理解植物效率至关重要。

4.In photochemistry, the quantum yield helps to quantify the efficiency of light-induced reactions.

在光化学中，量子产率有助于量化光诱导反应的效率。

5.A high quantum yield indicates that a larger proportion of absorbed photons are converted into usable energy.

高量子产率表明更大比例的吸收光子被转化为可用能量。

作文

In the realm of physics and chemistry, the term quantum yield refers to the efficiency with which absorbed light produces a specific photochemical event. This concept is particularly significant in the field of photochemistry, where understanding the relationship between light and chemical reactions is crucial. The quantum yield is defined as the ratio of the number of molecules that undergo a particular transformation to the number of photons absorbed by the system. In simpler terms, it measures how effectively a photochemical process converts light energy into chemical energy.For instance, consider the process of photosynthesis in plants. During this process, plants absorb sunlight and convert it into chemical energy stored in glucose. The quantum yield of photosynthesis indicates how many molecules of glucose are produced per photon of light absorbed. A higher quantum yield means that more glucose is produced for each photon, reflecting an efficient conversion of light energy into chemical energy.The significance of quantum yield extends beyond natural processes; it is also vital in various technological applications. For example, in the development of solar cells, researchers strive to maximize the quantum yield to enhance the efficiency of converting sunlight into electricity. By understanding and optimizing the quantum yield, scientists can design better materials and structures that capture sunlight more effectively.Moreover, the concept of quantum yield is not limited to energy conversion. It also plays a critical role in fields such as fluorescence and phosphorescence. In these phenomena, the quantum yield determines how much light is emitted after the absorption of photons. A high quantum yield in fluorescence means that a substantial amount of light is re-emitted, which is essential for applications like fluorescent markers in biological imaging.Understanding the factors that influence quantum yield is crucial for advancing both scientific research and practical applications. Various parameters, including the nature of the absorbing material, the wavelength of light, and environmental conditions, can affect the quantum yield. For instance, some materials may have high quantum yields under certain wavelengths of light but perform poorly under others. This variability necessitates careful experimentation and analysis to determine the optimal conditions for achieving the highest quantum yield.In conclusion, the term quantum yield encapsulates a fundamental principle in photochemistry that measures the efficiency of light-induced chemical transformations. Its implications stretch across various disciplines, from understanding natural processes like photosynthesis to enhancing technological innovations such as solar energy harvesting and fluorescence-based imaging. By mastering the concept of quantum yield, researchers and practitioners can unlock new potentials in both science and technology, ultimately contributing to advancements that benefit society as a whole.

在物理和化学领域，术语量子产率指的是吸收的光产生特定光化学事件的效率。这个概念在光化学领域尤为重要，因为理解光与化学反应之间的关系至关重要。量子产率被定义为经历特定转化的分子数与系统吸收的光子数之比。简单来说，它衡量光化学过程将光能转化为化学能的有效性。例如，考虑植物中的光合作用过程。在这个过程中，植物吸收阳光并将其转化为储存在葡萄糖中的化学能。光合作用的量子产率表示每个吸收的光子产生多少分子的葡萄糖。较高的量子产率意味着每个光子产生更多的葡萄糖，反映出光能向化学能的高效转化。量子产率的重要性不仅限于自然过程；它在各种技术应用中也至关重要。例如，在太阳能电池的发展中，研究人员努力最大化量子产率以提高将阳光转化为电能的效率。通过理解和优化量子产率，科学家可以设计更好的材料和结构，更有效地捕获阳光。此外，量子产率的概念在荧光和磷光等领域也起着关键作用。在这些现象中，量子产率决定了在吸收光子后发出的光的多少。荧光中的高量子产率意味着大量的光被重新发射，这对生物成像中的荧光标记等应用至关重要。理解影响量子产率的因素对于推动科学研究和实际应用至关重要。各种参数，包括吸收材料的性质、光的波长和环境条件，都可能影响量子产率。例如，一些材料在某些波长的光下可能具有高量子产率，但在其他波长下表现不佳。这种可变性需要仔细的实验和分析，以确定实现最高量子产率的最佳条件。总之，术语量子产率概括了光化学中的一个基本原理，即测量光诱导的化学转化的效率。它的影响跨越多个学科，从理解自然过程如光合作用到增强太阳能收集和基于荧光成像等技术创新。通过掌握量子产率的概念，研究人员和从业者可以解锁科学和技术的新潜力，最终推动有利于整个社会的进步。