quantum yield

简明释义

量子效率

英英释义

例句

1.The study focused on the quantum yield of different dyes used in organic photovoltaics.

该研究集中在用于有机光伏的不同染料的量子产率上。

2.In solar cells, maximizing the quantum yield can significantly improve energy conversion efficiency.

在太阳能电池中，最大化量子产率可以显著提高能量转换效率。

3.Researchers measured the quantum yield of fluorescence in various materials to assess their potential applications.

研究人员测量了各种材料的量子产率以评估它们的潜在应用。

4.A higher quantum yield indicates a more efficient photochemical reaction.

更高的量子产率表明光化学反应更有效。

5.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。

作文

In the field of photochemistry, the term quantum yield refers to the efficiency with which absorbed light produces a specific chemical change. It is defined as the ratio of the number of molecules that undergo a transformation to the number of photons absorbed by the system. Understanding quantum yield is crucial for scientists and researchers as it plays a significant role in various applications, including solar energy conversion, photosynthesis, and photodynamic therapy.The concept of quantum yield can be illustrated through the process of photosynthesis in plants. During photosynthesis, plants absorb sunlight and convert it into chemical energy. The efficiency of this process can be quantified by measuring the quantum yield, which indicates how effectively the absorbed light contributes to the formation of glucose and oxygen. A high quantum yield means that a greater proportion of absorbed photons are being used for photosynthesis, leading to more efficient energy conversion.In solar energy applications, such as photovoltaic cells, the quantum yield is a critical factor determining the overall efficiency of the solar panel. Researchers strive to develop materials that maximize the quantum yield to ensure that more of the sunlight captured is converted into usable electrical energy. Innovations in nanotechnology and material science have provided new avenues for enhancing the quantum yield of solar cells, thus making renewable energy sources more viable.Moreover, in the realm of photodynamic therapy, which is a treatment for certain types of cancer, the quantum yield of photosensitizing agents is vital. These agents, when activated by light, produce reactive oxygen species that can kill cancer cells. The effectiveness of this therapy largely depends on the quantum yield of the photosensitizer; a higher yield indicates that more reactive species are generated, leading to improved therapeutic outcomes.To measure quantum yield, researchers often conduct experiments under controlled conditions, where they can accurately determine the number of photons absorbed and the number of molecules transformed. This measurement can be complex, as it may involve various factors such as temperature, concentration, and the presence of other substances that may affect the reaction. Nevertheless, advancements in spectroscopy and analytical techniques have made it increasingly feasible to quantify quantum yield in different systems.In conclusion, the term quantum yield encapsulates a fundamental concept in photochemistry that reflects the efficiency of light-induced chemical processes. Its importance spans across multiple fields, from enhancing the efficiency of solar panels to improving cancer treatments. As research continues to evolve, understanding and optimizing quantum yield will undoubtedly lead to significant advancements in technology and medicine, ultimately contributing to a more sustainable and healthier future.

在光化学领域，术语量子产率指的是吸收的光线产生特定化学变化的效率。它被定义为经历转化的分子数与系统吸收的光子数之间的比率。理解量子产率对于科学家和研究人员至关重要，因为它在包括太阳能转化、光合作用和光动力疗法等多种应用中发挥着重要作用。通过植物的光合作用过程，可以说明量子产率的概念。在光合作用过程中，植物吸收阳光并将其转化为化学能。这个过程的效率可以通过测量量子产率来量化，这表明吸收的光线在形成葡萄糖和氧气方面的贡献程度。高量子产率意味着更多的吸收光子被用于光合作用，从而导致更高效的能量转化。在太阳能应用中，例如光伏电池，量子产率是决定太阳能电池整体效率的关键因素。研究人员努力开发最大化量子产率的材料，以确保更多捕获的阳光被转化为可用的电能。纳米技术和材料科学的创新为提高太阳能电池的量子产率提供了新的途径，从而使可再生能源更具可行性。此外，在光动力疗法的领域中，这是一种治疗某些类型癌症的方法，光敏剂的量子产率至关重要。这些光敏剂在光照激活下产生反应性氧物种，可以杀死癌细胞。这种疗法的有效性在很大程度上取决于光敏剂的量子产率；更高的产率表示生成更多的反应性物种，从而改善治疗效果。为了测量量子产率，研究人员通常在受控条件下进行实验，以便准确确定吸收的光子数和转化的分子数。这项测量可能比较复杂，因为它可能涉及温度、浓度和其他可能影响反应的物质的存在等各种因素。然而，光谱学和分析技术的进步使得在不同系统中量化量子产率变得越来越可行。总之，术语量子产率概括了光化学中的一个基本概念，反映了光诱导化学过程的效率。它的重要性跨越多个领域，从提高太阳能电池的效率到改善癌症治疗。随着研究的不断发展，理解和优化量子产率无疑将导致技术和医学的重大进步，最终为更可持续和更健康的未来做出贡献。