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E(CB)=X-Ec-0.5Eg E(VB)=E(CB)+Eg ÕâÊǹÀË㹫ʽ ÆäÖÐX is the absolute electronegativity of the atom semicon- ductor, expressed as the geometric mean of the absolute electro- negativity of the constituent atoms Ò²¾ÍÊÇ˵ÊÇ×é·ÖÔ×ӵļ¸ºÎƽ¾ùµç¸ºÐÔ Ec is the energy of free electrons of the hydrogen scale (4.5 eV) ¾ÍÊÇ˵EcΪ¶¨Öµ4.5eV EgΪ´øÏ¶£¬¿ÉÒÔ´Ó¹ÌÌå×ÏÍâÖйÀËã³öÀ´»òÕß²é³öÀ´£¬ÎÄÏ×ÖÐAgBrµÄE(CB)=0eV E(VB)=2.6eV ÎÒËãÁËϾÍÊÇXֵΪ5.8 AgµÄµç¸ºÐÔֵΪ1.93 BrΪ1.9 ÇëÎÊÊÇÔõôËã³öÀ´µÄ£¿ |
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àÅ Õâ¸öµç¸ºÐÔÒª¸ù¾ÝÃÜÁ¢¸ùµç¸ºÐÔÀíÂÛ¼ÆËãµÄ http://en.wikipedia.org/wiki/Electronegativity |
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