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[求助]
請介紹一下luminescence和Photoluminescence的區(qū)別,現(xiàn)在好多文獻(xiàn)都測后者。
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| luminescence和Photoluminescence我看文獻(xiàn)中寫法也都差不多,希望大家介紹下。 |


銅蟲 (小有名氣)
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luminescence譯為發(fā)光,在物理上發(fā)光分為很多種,如電致發(fā)光electroluminescence(EL),光致發(fā)光photoluminenscence(PL),陰極射線發(fā)光cathodeluminenscence(CL) 等。 其中PL、CL又廣泛運(yùn)用于固體物理測試中,是一種材料測試的方法,半導(dǎo)體領(lǐng)域常用該方法考擦材料所含的雜質(zhì)、缺陷等。 以下是來自wikipedia 對PL的簡要解釋: Photoluminescence (abbreviated as PL) is a process in which a substance absorbs photons (electromagnetic radiation) and then re-radiates photons. Quantum mechanically, this can be described as an excitation to a higher energy state and then a return to a lower energy state accompanied by the emission of a photon. This is one of many forms of luminescence (light emission) and is distinguished by photoexcitation (excitation by photons), hence the prefix photo-.[1] The period between absorption and emission is typically extremely short, in the order of 10 nanoseconds. Under special circumstances, however, this period can be extended into minutes or hours. 相關(guān)鏈接: http://en.wikipedia.org/wiki/Photoluminescence |
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