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Fairy1990

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and 0.2 ml of LnCl3 (Ln =Er or Tm) solutions were
added to 60 ml of ethanol with 20 ml of PEI solution.Ũ¶È¶¼Îª0.2M¡£Õâ¸öNH4FµÄÁ¿ÊÇ¿´NaClµÄÁ¿  »¹ÊÇ¿´Ï¡ÍÁµÄÁ¿  ÇóÖ¸½Ì  Ð»Ð»Ð»Ð»
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2¡¢Ï¡ÍÁ°üÀ¨ÁËËùÓÐÈý¼ÛÏ¡ÍÁÀë×Ó£¬¼´Y(3+)¡¢Yb(3+)¡¢Er(3+)/Tm(3+)£»
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