Laser induced broadband white emission of Y2Si2O7 nanocrystals
来源期刊：Journal of Rare Earths2019年第11期
论文作者：Robert Tomala Dariusz Hreniak Wieslaw Strek
文章页码：1196 - 1199
摘 要：The generation of broadband white emission of the α-Y2Si2O7 nanocrystals was observed upon excitation by focused beam ofCW lasers operating in near infrared,visible and blue regions.The influence of excitation energy on order of process is presented.The temperature of sample emitting laser induced white emission（LIWE） was determined by luminescence nanothermometry technique.It is found that the temperature is much lower than that predicted by blackbody model characterized with the same energy.It is shown that the LIWE is accompanied by efficient photocurrent.An origin of white emission is discussed in terms of multiphoton ionization process leading to the inter valence charge transfer emission.
Robert Tomala，Dariusz Hreniak，Wieslaw Strek
Institute for Low Temperature and Structure Research,Polish Academy of Sciences
摘 要：The generation of broadband white emission of the α-Y2Si2O7 nanocrystals was observed upon excitation by focused beam ofCW lasers operating in near infrared,visible and blue regions.The influence of excitation energy on order of process is presented.The temperature of sample emitting laser induced white emission（LIWE） was determined by luminescence nanothermometry technique.It is found that the temperature is much lower than that predicted by blackbody model characterized with the same energy.It is shown that the LIWE is accompanied by efficient photocurrent.An origin of white emission is discussed in terms of multiphoton ionization process leading to the inter valence charge transfer emission.
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