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ÔÚ¡°In  n type and p type £¬the Fermi energy is quite deep (~0.7 to 0.8 eV) to account for the low conductivity, compared to the band gap of 2.0-2.5 eV.¡°ÖУ¬¶ÔÓÚnÐͲÄÁÏ£¬·ÑÃ×Äܼ¶ÊÇÔÚµ¼´øÒÔÏÂ~0.7-0.8 eVÂð£¿ÓÚpÐͲÄÁÏ£¬·ÑÃ×Äܼ¶ÊÇÔÚ¼Û´øÒÔÉÏ~0.7-0.8 eVÂð£¿

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