摘要：

An objective is to provide Si/SiNsystem nanosized particles each exhibiting reduced environmental load together with minimized bio toxicity, excellent chemical stability, enhanced relative light emission intensity, and less degradation of emission intensity during continuous exposure to light; a biosubstance labeling agent capable of keeping on labeling a biosubstance exhibiting luminance enhanced for a long duration with the Si/SiNsystem nanosized semiconductor particle of the present invention; and also a method of manufacturing the Si/SiNsystem nanosized semiconductor particle of the present invention.

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