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wuyuyu2007

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µÚ1¾ä£ºHowever, because the emission spectra of these phosphors absences in the red region, so YAG: Ce based white LED has a poor color rendering index (CRI).

ÍøÓÑÐÞÕý£ºHowever,   these phosphors lack the red region in their emission spectra of , therefore YAG: Ce based white LED has a poor color rendering index (CRI).

Â¥Ö÷ÒÉÎÊ£ºÊDz»ÊÇof Ó¦¸ÃÒÆµ½lack ºóÃæ£ºHowever,   these phosphors lack of the red region in their emission spectra , therefore YAG: Ce based white LED has a poor color rendering index (CRI).

µÚ2¾ä£º It can be seen clearly that the enhancement of Ce3+ co-doped SrSiON:Eu2+ is about 140% compared with the one without Ce3+ co-doped.

Ó¦¸ÃдÃ÷¾ßÌåÊÇʲôÔö¼ÓÁË£¬ÕÛÖбí´ï·¨ºÜ²»ºÏÀí

Â¥Ö÷ÒÉÎÊ£º¸Ä³ÉÕâÑù¿ÉÒÔô£ºIt can be seen clearly that the luminescent properties of SrSiON:Eu2+ ,Ce3+ phosphor are enhanced about 140% compared with the one without Ce3+ co-doped.

µÚ3¾ä£ºTherefore, the electric dipole-dipole interaction predominates in the ET mechanism is from Ce3+ to Eu2+ in SrSiON: Eu2+,Ce3+.

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Â¥Ö÷ÒÉÎÊ£º¸Ä³ÉÕâÑù¿ÉÒÔô£¬Hence, the energy transfer from Ce3+ to Eu2+ ions is predominantly attributed to the electric dipole-dipole interaction.
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youmomaoyan

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https://xt.jxust.edu.cn/info/1029/1950.htm
2Â¥2012-09-21 15:45:57
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youmomaoyan

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wuyuyu2007: ½ð±Ò+1, ¡ï¡ï¡ïºÜÓаïÖú, ·Ç³£¸Ðл°¡£¬¿´À´Ó¢ÎĹûÈ»~°¥£¬ÄǾäÇ¿¶ÈÔö¼ÓµÄ»°£¬²»ÖªµÀ±äÁ˶àÉÙ»ØÁË£¬»¹ÊDz»¶Ô~ 2012-09-22 09:10:23
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µÚÒ»¾ä£ºHowever,   YAG: Ce based white LEDs with low color-rendering index (CRI) because of the lack of red light component .
µÚ¶þ¾ä:Ä㻹ÊÇûÓÐ˵Ã÷ÔöÇ¿µÄ140%ÊÇʲô¡£·¢¹âÐÔÄܲ»ÄÜ˵ÔöÇ¿140%¡£Äã¿ÉÒÔ˵ÊÇ·¢ÉäÇ¿¶È£¬»òÊÇʲô£¬ËûµÃÊÇÒ»¸öÖµ¡£±ÈÈç˵£ºIt is obvious that emission intensity of the SrSiON:Eu2+phosphors are enhanced about 140% by co-doped with Ce3+.
µÚÈý¾ä£ºThe energy transfer from Ce3+to Eu2+in the host lattice of SrSiNO is quite common£¬and has been observed in aluminum oxynitride phosphor£¬ which is generally attributed to the electric dipole-dipole interaction.
https://xt.jxust.edu.cn/info/1029/1950.htm
3Â¥2012-09-21 16:12:15
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

cencera

Ìú¸Ëľ³æ (ÕýʽдÊÖ)

complex too much!!
charles@cencera.com
4Â¥2012-09-22 07:36:36
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