In many articles, I have read the same sentences "CdS1-xSex, the only known ceramic pigment to generate bright red color". Since I used to synthesis CdS1-xSex for a period of time, I want to known, the root cause of CdSxSe1-x generating the unique bright red color, in other words, what endures its uniqueness in bright red color generation?
Thanks.
The chemical substance CdSxSe1 or Cadmium Sulphide x Selenium 1 is what is known as a pseudo alloy. These are close structured often crystalline materials without any inter-atomic chemical bonding, which have typically high chroma colour as referred to in the question. The purity of the colour is characteristic of a narrow band width spectral stimulus which is generated by a single mode of molecular oscillation. By contrast, spectral peak broadening is typical of multimode oscillation or the sum of a number of different spectrally distinct stimuli. A class of novel bright coloured materials known as ‘quantum dots’ share this characteristic colour generation mode.
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