The荧光和磷光和发光之间的关键差异是他们发光的方式。在荧光中,物质可以立即重新染色辐射,而在磷光物质不reemit the radiation immediately after the absorption. Luminescence, on the other hand, is the emission of light from a non-heated substance due to some other cause such as a chemical reaction, electrical energy, etc.
所有荧光,磷光和发光都与从源材料中吸收的光发射有关。
内容
1.Overview and Key Difference
2.什么是荧光
3.What is Phosphorescence
4。What is Luminescence
5。Fluorescence vs Phosphorescence vs Luminescence in Tabular Form
6。摘要 - 荧光与磷光与发光
什么是荧光?
荧光可以定义为从以前吸收能量的物质中发射光。这种类型的物质必须吸收光或任何其他电磁辐射以发出光作为荧光。此外,这种发出的光是一种发光,这意味着它会自发发射。发射的光通常比吸收的光具有更长的波长。这意味着发射的轻能低于吸收能量。
在荧光中,由于励磁of atoms in the substance. The absorbed energy is often released as luminescence in a very short time period, about 10-8 seconds. That means we can observe fluorescence as soon as we remove the source of radiation that causes excitation.
荧光在不同领域中有许多应用,例如矿物学,宝石学,医学,化学传感器,生化研究,染料,生物探测器,荧光灯的产生等。例如,在某些矿物质中。
What is Phosphorescence?
磷光is a type of photoluminescence in which a substance exposed to the light of a short波长can cause the substance to glow. This happens by the absorption of the light and reemission of that light at a longer wavelength. The material tends to absorb some of the energy from the radiation to reemit it for a longer time after removing the radiation source.
有两种可能发生磷光的可能机制:三重磷光和持续磷光。当原子吸收高能量光子时,会发生三重磷光,而当高能量光子被原子吸收时,就会发生持续的磷光,这会导致其将其电子捕获到晶体或无汤材料晶格中的缺陷中。
什么是发光?
Luminescence is the emission of light by a substance that has not been heated. It is the spontaneous emission of light from a substance. We can call it “cold light” because the light does not emit from a heated substance. The causes for this emission can include chemical reactions, electrical energy, subatomic motions, or stress on a crystal. Therefore, we can easily distinguish luminescence fromincandescence,因为在白炽灯中,光从加热的来源散发出来。有不同类型的发光,例如生物发光,化学发光,电致发光,光致发光和热发光。
Types of Luminescence
Chemiluminescenceis the emission of light as a result of a chemical reaction. Here, the emitted light is called luminescence. This means the light emits as spontaneous emission, not by heat or cold light. However, heat may also be formed. Then, the reaction becomes exothermic.
生物发光指示活生物体对光的生化发射。这是一种化学发光。这种发射主要发生在海洋脊椎动物和无脊椎动物中。但是,我们可以观察到一些真菌物种的生物发光,诸如生物发光细菌,陆地节肢动物(萤火虫)等微生物,等等。
光致发光is a form of luminescence that occurs with a photoexcitation via photon absorption. This light emission occurs when a substance absorbs electromagnetic radiation and re-emits the radiation. This process initiates with photoexcitation. This means the electrons of the substance undergo excitations when the substance absorbs photons, and electrons move to higher energy states from lower energy states. Following these excitations, there are relaxation processes as well. In the relaxation step, photons are re-radiated or emitted. The time period between the absorption and emission of photons may vary depending on the substance.
Electroluminescenceindicates a chemical phenomenon in which a material emits light as a response to the passage of an electric current. We can abbreviate it as EL. This is both an optical phenomenon and an electrical phenomenon. It can occur in the presence of an electric current or in the presence of a strong electric field. This feature is distinct from black body light emission that results from one of the following causes: heat, a chemical reaction, sound, and other mechanical action.
Thermoluminescencecan be described as the emission of light from some mineral forms and some crystalline materials. This emission occurs due to the electron displacement within the crystal lattice of these substances. Some examples for substances that can undergo thermoluminescence include ceramic, brick, fire pits, etc.
荧光,磷光和发光之间有什么区别?
荧光是从以前吸收能量的物质中发射的光。荧光和磷光和发光之间的关键差异是它们的排放。在荧光中,一种物质可以立即重新定位吸收的辐射,而在磷光下,该物质在吸收后不会立即重新辐射。另一方面,发光是由于某些其他原因(例如化学反应,电能等)从非加热物质中发出的光。
以下是荧光和磷光和表格形式发光之间的差异的摘要,以与并排比较。
摘要 - 荧光与磷光与发光
Fluorescence, phosphorescence, and luminescence are related to the emission of an absorbed light from a source material. The key difference between fluorescence and phosphorescence and luminescence is that in fluorescence, a substance can immediately reemit the absorbed radiation but, in phosphorescence, the substance does not reemit the radiation immediately after the absorption. Whereas, luminescence refers to the emission of light from a non-heated substance due to some other cause such as a chemical reaction, electrical energy, etc.
Reference:
1.“”Fluorescence。”化学库.
2. “光致发光。”概述|ScienceDirect主题.
Image Courtesy:
1.“”Black light theatre Prague HILT 13“黑色轻剧院布拉格 - 自己的作品(CC BY-SA 4.0)通过Commons Wikimedia
2. “磷光” By Lưu Ly – Own work, Public Domain) via Commons Wikimedia
3.“”发光材料” By Vishal Garasia vish – Own work(CC BY-SA 4.0)通过Commons Wikimedia
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