| ²é¿´: 494 | »Ø¸´: 2 | |||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | |||
miaobobo510гæ (³õÈëÎÄ̳)
|
[ÇóÖú]
Âé·³´ó¼Ò·Ò»¸ö¼ò¶ÌÕªÒª
|
||
|
Cerium-doped yttrium aluminum garnet (YAG:Ce) powder was synthesized by the Pechini method with aluminum nitride, yttrium nitride, citric acid and ethylene glycol as the starting materials. Structure, morphology and luminescence spectra were investigated by using X-ray diffraction, thermogravimetric and differential thermal analysis, scanning electron microscopy, Fourier transform infrared spectroscopy and photoluminescence spectroscopy measurements. The pure YAG phase was formed after heat treatment at 800 C for 3 h and no intermediate phase was observed. The average size of the particles was about 70 nm. The photoluminescence spectrum of the crystalline YAG:Ce phosphors showed the green-yellow emission with 5d?4f transition as the most prominent group. The increase of the ethylene glycol:citric acid molar ratio, resulted in a powder with smaller particle size and better luminescence properties. |
» ²ÂÄãϲ»¶
Çóµ÷¼Á
ÒѾÓÐ4È˻ظ´
0854Çóµ÷¼Á
ÒѾÓÐ27È˻ظ´
²ÄÁÏÏà¹Ø×¨Òµ344Çóµ÷¼ÁË«·Ç¹¤¿ÆÑ§Ð£»ò¿ÎÌâ×é
ÒѾÓÐ27È˻ظ´
300Çóµ÷¼Á
ÒѾÓÐ12È˻ظ´
291Çóµ÷¼Á
ÒѾÓÐ10È˻ظ´
Ò»Ö¾Ô¸»¦9£¬326ÇóÉúÎïѧµ÷¼Á
ÒѾÓÐ12È˻ظ´
ÉúÎïѧµ÷¼Á
ÒѾÓÐ10È˻ظ´
320Çóµ÷¼Á
ÒѾÓÐ5È˻ظ´
½ÓÊÜÈκε÷¼Á
ÒѾÓÐ7È˻ظ´
»¯Ñ§070300 Çóµ÷¼Á
ÒѾÓÐ29È˻ظ´
qiaoxiaojing
Òø³æ (СÓÐÃûÆø)
- ·ÒëEPI: 2
- Ó¦Öú: 7 (Ó×¶ùÔ°)
- ½ð±Ò: 667.8
- ºì»¨: 1
- Ìû×Ó: 102
- ÔÚÏß: 42.9Сʱ
- ³æºÅ: 2125162
- ×¢²á: 2012-11-13
- ÐÔ±ð: MM
- רҵ: ÉúÎﻯѧ
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
RXMCDM: ½ð±Ò+1, ¶àлӦÖú£¡ 2014-01-08 10:49:22
miaobobo510: ½ð±Ò+10, ·ÒëEPI+1, ¡ïÓаïÖú 2014-01-08 15:22:11
RXMCDM: ½ð±Ò+1, ¶àлӦÖú£¡ 2014-01-08 10:49:22
miaobobo510: ½ð±Ò+10, ·ÒëEPI+1, ¡ïÓаïÖú 2014-01-08 15:22:11
|
ÒÔµª»¯ÂÁ£¬µª»¯îÆ£¬ÄûÃÊËáºÍÒÒ¶þ´¼×÷ΪÔÁÏ£¬Í¨¹ýPechini·¨ºÏ³Éîæ²ôÔÓµÄîÆÂÁʯÁñʯ£¬Í¨¹ýX-ÉäÏßÑÜÉ䣬ÈÈÖØ-²îÈÈ·ÖÎö£¬µç×ÓÏÔ΢¾µÉ¨Ã裬¸µÀïÒ¶±ä»»ºìÍâ¹âÆ×ºÍ¹âÖ·¢¹â¹âÆ×²âÁ¿À´È·¶¨ËüµÄ½á¹¹£¬ÍâÐÎÓë·¢¹â¹âÆ×¡£´¿µÄYAGÏàÔÚ800¡æ£¬3СʱÈÈ´¦ÀíºóÐγɣ¬²¢ÇÒûÓй۲쵽ÖмäÆäËüÏàµÄÉú³É¡£Î¢Á£µÄƽ¾ù³ß´çΪ70nm.YAG¾§ÌåµÄ¹âÖ·¢¹â¹âÆ×£º¸õÒÔ5d-4fԾǨΪ×îÖØÒªµÄ²¿·Ö£¬Ó«¹â³ÊÏÖ»ÆÂÌÉ«·¢¹â´ø¡£ÒÒ¶þ´¼/ÄûÃÊËáµÄĦ¶û±ÈµÄÔö¼Óʹ·ÛÄ©¾ßÓиüСµÄ¿ÅÁ£ÒÔ¼°¸üÓŵķ¢¹âÐÔÄÜ¡£ ÐÂ³æ»ØÌû£¬Çó¹ÄÀø~ |
2Â¥2014-01-08 09:43:44
miaobobo510
гæ (³õÈëÎÄ̳)
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 596.5
- Ìû×Ó: 38
- ÔÚÏß: 7.8Сʱ
- ³æºÅ: 2780079
- ×¢²á: 2013-11-05
- רҵ: ×ÊÔ´»¯¹¤
|
ÎÒ»¹ÓÐһƪҪÂé·³Äú£¬Âé·³Äã¿´¿´https://muchong.com/bbs/viewthread.php?tid=6855532&fpage=1 |
3Â¥2014-01-08 15:21:52













»Ø¸´´ËÂ¥
20