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5Â¥2009-06-08 15:33:56
jichongcml
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| Energy band structure of doped lead to changes in the valence band and rewind a lot of Transition state between the electronic transition is very prone to heat after the late Yu Jump to these energy band, and further delayed relaxation or transition back to the valence band hole with the combination of . It is obvious that the more Transition state, thermal relaxation occurs later than the greater the probability that the electron hole composite increase. to some extent, we hope that these Transition state, as Transition state increase the probability of electronic transition; but the concentration of too much , soon after the transition of the complex. This is a contradiction. |
2Â¥2009-06-08 13:41:30
longhua7085
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woshibadchen(½ð±Ò+30,VIP+0):ллÐÖµÜÁË 6-9 17:20
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²ôÔÓµ¼ÖÂÄÜ´ø½á¹¹¸Ä±ä,ÔÚ¼Û´øºÍµ¹´øÖ®¼äÐγɺܶàÖмä̬,µç×ÓԾǨºóºÜÈÝÒ×·¢ÉúÈȳÙÔ¥Ìø×ªµ½ÕâЩÄÜ´ø,½øÒ»²½³ÙÔ¥»òԾǨ»Øµ½¼Û´ø¸ú¿ÕѨ½áºÏ. Doping leads to changes in energy band structure,forming many intermediate states between valence bands and inverted bands. Thermal relaxation often occurs after electronic transition and electrons jump to the intermediate states or go back to valence bands to combine with electron holes after further relaxation or transition. ºÜÃ÷ÏÔ,Öмä̬Խ¶à,ÈȳÙÔ¥·¢ÉúµÄ»úÂÊÔ½´ó,¼´µç×Ó¿ÕѨ¸´ºÏ¼ÓÖØ.Ò»¶¨³Ì¶ÈÄÚ,ÎÒÃÇÏ£ÍûÓÐÕâЩÖмä̬,ÒòΪÖмä̬ʹµÃµç×ÓԾǨ¼¸ÂÊÔö´ó;µ«ÊÇŨ¶È¹ý´ó,ԾǨºóºÜ¿ìÓÖ¸´ºÏÁË.ÕâÊÇÒ»ÖÖì¶Ü. Obviously, thermal relaxation is more likely to occur with more intermediate states, namely the recombination of electron holes becomes much more serious. In some way, We expect the intermediate states exsit , because it will increase the possibility of electronic transition. However, it is a contradiction that the electron holes recombine with each other after electronic transition. ·Çרҵ·Òë µ¹´ø£¬³ÙÔ¥£¬Öмä̬£¬¸´ºÏ¡£¡£¡£ÕâЩ´Ê¿ÉÄÜ·Ò벻׼ȷ£¬Â¥Ö÷×Ô¼ºÔÙÐÞ¸ÄÏ塃 |
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4Â¥2009-06-08 15:30:53













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