Because Eu2+ is surrounded by host ions, mixed states of 4f5d will be split by the crystal field and the luminescent wavelength will be changed.

 
  • 由于Eu2+被基質(zhì)離子所包圍,基質(zhì)離子所產(chǎn)生的晶體場(chǎng)使Eu2+離子的4f65d混合能級劈裂,從而改變發(fā)光的波長(cháng)。
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