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\u8fd9\u91cc\u7684k\u4e3a\u73bb\u5c14\u5179\u66fc\u5e38\u91cf\uff0cEF<\/sub>\u4e3a\u8d39\u7c73\u80fd\u7ea7\uff0cEA<\/sub>\u4e3a\u53d7\u4e3b\u80fd\u7ea7\uff0cg\u4e3a\u53d7\u4e3b\u7b80\u5e76\u5ea6\uff0c\u4f4e\u6e29\u4e0bg\u00a0= 1\u00a0\u00a0(EA<\/sub>-EF<\/sub>>>kT)\u3002<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\"\"\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0(\u516c\u5f0f2)\u00a0<\/p>\n

\u516c\u5f0f1\u662f\u4ece\u534a\u5bfc\u4f53\u4e2d\u53d7\u4f53\u7684\u7535\u79bb\u63a8\u5bfc\u51fa\u6765\u7684\uff0c\u4f46\u5bf9\u4e8e\u5728\u4e8c\u7ef4\u8868\u9762\u4e0a\u7535\u79bb\u4e2d\u6027\u5206\u5b50\u7684\u70ed\u529b\u5b66\u6027\u8d28\u7c7b\u4f3c\u3002\u4ece\u56fe3c\u4e2d\u5f97\u51fa\uff0c\u0394E= 0.12\u00b10.02 eV\uff0cN0<\/sub>\u22481.5\u00d71015<\/sup>cm-2<\/sup>\uff0c\u8fd9\u63a5\u8fd1\u4e8eO2<\/sub>\u7684\u5355\u5c42\u5bc6\u5ea6\uff08\u53731400\u00d71015 <\/sup>cm-2<\/sup>\uff0c\u56fe3c\u4e2d\u7684\u7ea2\u8272\u5706\u5708\uff09\u3002\u5b9e\u9a8c\u7ed3\u679c\u8bc1\u5b9e\u4e86p\u63ba\u6742\u662f\u7531\u4e8e\u8fd1\u4f3c\u5b8c\u6574\u7684\u6c27\u6c14\u5355\u5c42\u5f15\u8d77\u7684\u8fd9\u4e00\u5047\u8bbe\u3002\u0394E\u548cN0<\/sub>\u7684\u53d8\u5316\u662f\u7531\u4e8e\u90e8\u5206\u8986\u76d6\u7684\u5fae\u91cf\u73af\u5883\u6325\u53d1\u6027\u82b3\u9999\u5206\u5b50\u5f15\u8d77\u7684\uff0c\u8fd9\u4e9b\u5206\u5b50\u5bb9\u6613\u88ab\u5438\u9644\u5728\u77f3\u58a8\u5316\u6750\u6599\u4e0a\uff0c\u964d\u4f4e\u4e86\u6c27\u6c14\u8986\u76d6\u7387\u5e76\u5f71\u54cd\u5176\u7535\u79bb\u80fd\u3002\u5728\u6837\u54c1S1\uff08\u56fe3d\uff09\u4e2d\u89c2\u5bdf\u5230\u7684\u659c\u7387\u53d8\u5316\u662f\u7531\u6b8b\u80f6\u5f15\u8d77\u7684\uff0c\u8fd9\u5bfc\u81f4SEG\u5728\u4f4e\u6e29\u4e0bp\u63ba\u6742\uff0c\u4ece\u659c\u7387\u786e\u5b9a\u5176\u0394E = 0.035\u00a0eV\u3002<\/p>\n

\u6837\u54c1S2\u3001S3\u548cS4\u7684\u8fc1\u79fb\u7387\u663e\u793a\u51fa\u6025\u5267\u4e0a\u5347\uff0c\u5728\u8f6c\u53d8\u6e29\u5ea6Ttr<\/sub>\u5206\u522b\u4e3a250 K\u3001190 K\u548c150 K\u65f6\u51fa\u73b0\u5e73\u53f0\u3002\u76f8\u5e94\u7684\u8f6c\u53d8\u7535\u8377\u5bc6\u5ea6ntr<\/sub>\u5206\u522b\u4e3a17\u00d71012 <\/sup>cm-2<\/sup>\u30014.3\u00d71012 <\/sup>cm-2<\/sup>\u548c0.27\u00d71012<\/sup>\u00a0cm-2<\/sup>\u3002\u4f4e\u7535\u8377\u5bc6\u5ea6\u4e0b\u7684\u8fc1\u79fb\u7387\u662f\u7531\u5e26\u9699\u4e2d\u7684\u5c40\u90e8\u7f3a\u9677\u6001\u5f15\u8d77\u7684\uff08\u56fe3 e\u548cf\uff09\uff0c\u968f\u7740\u7535\u8377\u5bc6\u5ea6\u7684\u589e\u52a0\u5c40\u90e8\u6001\u88ab\u586b\u5145\uff0c\u4e4b\u540e\u8f93\u8fd0\u8fc7\u6e21\u5230\u9ad8\u8fc1\u79fb\u7387\u7684\u5e26\u8f93\u8fd0\uff0c\u56e0\u6b64ntr<\/sub>\u662f\u7f3a\u9677\u6001\u5bc6\u5ea6\u7684\u5ea6\u91cf\u3002\u8fd9\u4e00\u8fc7\u7a0b\u5df2\u5728\u5176\u4ed6\u4e8c\u7ef4\u534a\u5bfc\u4f53\u4e2d\u89c2\u5bdf\u5230\uff0c\u5e76\u4e14\u5b83\u5bf9\u4e8e\u8584\u819c\u6676\u4f53\u7ba1\u7684\u4e9a\u9608\u503c\u4e0a\u5347\u6709\u8d21\u732e\uff1b\u5728CCS\u751f\u957f\u7684\u534a\u5bfc\u4f53\u77f3\u58a8\u70ef\u4e2d\uff0c\u5e26\u9699\u5185\u7684\u8f93\u8fd0\u5df2\u88ab\u786e\u5b9a\u4e3a\u53ef\u53d8\u7a0b\u8df3\u8dc3\u3002<\/p>\n

\"\"<\/p>\n

\u56fe4 (a) \u901a\u8fc7\u8ba1\u7b97\u6001\u5bc6\u5ea6\u9884\u6d4b\u7684SEG\u6c9f\u9053\u7535\u963b\u7387\uff0c\u5047\u8bbe\u7406\u60f3\u7684\u4ecb\u7535\u5e38\u6570\u4e0bSEG\u7684\u8fc1\u79fb\u7387\u4e3a4000 cm2<\/sup>V-1<\/sup>s-1<\/sup>\uff0c\u5ba4\u6e29\u5f00\u5173\u6bd4\u9884\u6d4b\u8d85\u8fc7106<\/sup>\u3002(b) \u7535\u8377\u5bc6\u5ea6\u4e0e\u8d39\u7c73\u80fd\u7ea7\uff08EF<\/sub>\uff09\u7684\u5173\u7cfb\u56fe\u3002\u9884\u6d4b\u5728T = 300 K\u65f6\uff0cN\u548cP\u5206\u652f\u7684\u5f00\u542f\u7535\u538b\u5206\u522b\u4e3a+0.34 V\u548c-0.23 V\u3002<\/p>\n

\u901a\u8fc7\u6d4b\u91cf\u534a\u5bfc\u4f53\u7279\u6027\u548c\u6001\u5bc6\u5ea6\uff0c\u6211\u4eec\u53ef\u4ee5\u9884\u6d4b\u573a\u6548\u5e94\u7ba1\u7684\u54cd\u5e94\uff08\u56fe4\uff09\uff0c\u6c9f\u9053\u7535\u5bfc\u53ef\u4ee5\u8868\u8fbe\u6210\u03c3(Vg)=ne<\/sub>e\u00b5e<\/sub>+ nh<\/sub>e\u00b5h<\/sub>\uff0c\u8fd9\u91cc\u7684ne<\/sub>\u662f\u7535\u5b50\u5bc6\u5ea6\u548cnh<\/sub>\u662f\u7a7a\u7a74\u5bc6\u5ea6\u3002<\/p>\n

\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\"\"\u00a0 \u00a0 (\u516c\u5f0f3)<\/p>\n

\u5728\u8fd9\u91cc\uff0cFe<\/sub>\u548cFh<\/sub>\u5206\u522b\u662f\u7535\u5b50\u548c\u7a7a\u7a74\u8d39\u7c73\u51fd\u6570\uff0c\u5bc6\u5ea6\u6001D(\u03b5)\u6765\u81ea\u56fe2b\u4e2d\u7684\u7ea2\u8272\u865a\u7ebf\u3002\u5728\u03bc\u00a0= 4000 cm2<\/sup>V-1<\/sup>s-1<\/sup>\u7684\u60c5\u51b5\u4e0b\uff0c\u5f00\u5173\u6bd4\u4e3a106<\/sup>\u00a0\uff08\u56fe4a\uff09\uff0c\u4e9a\u9608\u503c\u6446\u5e45\uff08SS\uff09\u4e3a60 mV\/\u00a0decade\uff08\u56fe4b\uff09\uff0c\u8fd9\u8db3\u4ee5\u6ee1\u8db3\u6570\u5b57\u7535\u5b50\u5b66\u7684\u8981\u6c42\u3002<\/p>\n

\u7ed3\u8bba\u4e0e\u5c55\u671b<\/b><\/strong>\u00a0<\/p>\n

\u5728\u4e3b\u6d41\u77f3\u58a8\u70ef\u7814\u7a76\u5174\u8d77\u4e4b\u524d\uff0c\u5916\u5ef6\u77f3\u58a8\u70ef\u7eb3\u7c73\u7535\u5b50\u7814\u7a76\u7684\u6838\u5fc3\u76ee\u6807\u5c31\u662f\u6784\u5efa\u4e00\u4e2a\u80fd\u591f\u66ff\u4ee3\u7845\u7535\u5b50\u76842D\u7eb3\u7c73\u7535\u5b50\u5e73\u53f0\u3002\u666e\u904d\u8ba4\u4e3a\uff0c\u77f3\u58a8\u70ef\u7684\u96f6\u5e26\u9699\u7ed3\u6784\u662f\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\u7684\u4e3b\u8981\u6311\u6218\u3002\u672c\u6587\u8bc1\u660e\u539f\u5b50\u6392\u5217\u9ad8\u5ea6\u6709\u5e8f\u7684\u534a\u5bfc\u4f53\u77f3\u58a8\u70ef\u662f\u4e00\u79cd\u6027\u80fd\u4f18\u5f02\u76842D\u534a\u5bfc\u4f53\u6750\u6599\uff0c\u5177\u67090.6\u00a0eV\u7684\u80fd\u9699\uff0c\u5ba4\u6e29\u4e0b\u7684\u8fc1\u79fb\u7387\u8fdc\u8fdc\u8d85\u8fc7\u6240\u6709\u5f53\u524d\u76842D\u534a\u5bfc\u4f53\u6750\u6599\u3002\u4ee5SEG\u4e3a\u6c9f\u9053\u7684\u573a\u6548\u5e94\u6676\u4f53\u7ba1\u7684\u5f00\u5173\u6bd4\u4e3a104<\/sup>\uff0c\u5728\u4f18\u5316\u7684\u5668\u4ef6\u4e2d\u53ef\u80fd\u8fbe\u5230106<\/sup>\u3002\u9664\u4e86\u8fc1\u79fb\u7387\u5df2\u7ecf\u8fbe\u52305500 cm2<\/sup>V-1<\/sup>s-1<\/sup>\uff0cSEG\u662f\u5728THz\u517c\u5bb9\u7684SiC\u886c\u5e95\u4e0a\u751f\u957f\u7684\uff0cSiC\u672c\u8eab\u5df2\u7ecf\u6210\u4e3a\u8d8a\u6765\u8d8a\u91cd\u8981\u7684\u5546\u4e1a\u534a\u5bfc\u4f53\uff0c\u4e0e\u4f20\u7edf\u7684\u5fae\u7535\u5b50\u52a0\u5de5\u65b9\u6cd5\u517c\u5bb9\u3002\u6b64\u5916\uff0c\u5916\u5ef6\u77f3\u58a8\u70ef\u5177\u5907\u7eb3\u7c73\u56fe\u6848\u5316\u7684\u80fd\u529b\uff0c\u4e0e\u5176\u4ed6\u886c\u5e95\u4e0a\u7684\u77f3\u58a8\u70ef\u76f8\u6bd4\uff0c\u5728\u7eb3\u7c73\u5c3a\u5ea6\u4e0a\u7684\u8fb9\u7f18\u7ed3\u6784\u66f4\u52a0\u6709\u5e8f\uff0c\u5728\u5176\u8fb9\u7f18\u540c\u6837\u53ef\u4ee5\u8868\u73b0\u51fa\u826f\u597d\u7684\u4e00\u7ef4\u5bfc\u7535\u7279\u6027\u3002SEG\u53ef\u4ee5\u4e0e\u5404\u79cd\u539f\u5b50\u548c\u5206\u5b50\u8fdb\u884c\u63d2\u5c42\u53cd\u5e94\uff0c\u6210\u4e3a\u65b0\u578b\u7535\u5b50\u548c\u78c1\u6027\u6750\u6599\u3002\u8fd9\u9879\u5de5\u4f5c\u6210\u529f\u5730\u653b\u514b\u4e86\u957f\u671f\u4ee5\u6765\u963b\u788d\u77f3\u58a8\u70ef\u7535\u5b50\u5b66\u53d1\u5c55\u7684\u5173\u952e\u6280\u672f\u96be\u9898\uff0c\u6253\u5f00\u4e86\u77f3\u58a8\u70ef\u5e26\u9699\uff0c\u5b9e\u73b0\u4e86\u4ece\u201c0\u201d\u5230\u201c1\u201d\u7684\u7a81\u7834\uff0c\u8fd9\u4e00\u7a81\u7834\u88ab\u8ba4\u4e3a\u662f\u5f00\u542f\u77f3\u58a8\u70ef\u82af\u7247\u5236\u9020\u9886\u57df\u5927\u95e8\u7684\u91cd\u8981\u91cc\u7a0b\u7891\u3002\u6beb\u65e0\u7591\u95ee\uff0cSEG\u5df2\u7ecf\u4e3a2D\u7eb3\u7c73\u7535\u5b50\u9886\u57df\u5e26\u6765\u4e86\u5168\u65b0\u7684\u53ef\u80fd\u6027\uff0c\u5176\u6f5c\u529b\u4e4b\u5de8\u5927\uff0c\u8ba9\u4eba\u76f8\u4fe1\u5728\u4e0d\u4e45\u7684\u5c06\u6765\uff0c\u5b83\u5c06\u8fce\u6765\u5546\u4e1a\u5316\u7684\u66d9\u5149\u3002<\/p>\n

\u7eb3\u7c73\u4e2d\u5fc3\u4ecb\u7ecd<\/b><\/strong><\/p>\n

\u7eb3\u7c73\u4e2d\u5fc3\u4e8e2018\u5e747\u6708\u6b63\u5f0f\u6302\u724c\u6210\u7acb\uff0c\u4e2d\u5fc3\u6267\u884c\u4e3b\u4efb\u4e3a\u9a6c\u96f7\u6559\u6388\u3002\u4e2d\u5fc3\u4f9d\u6258\u5929\u6d25\u5927\u5b66\u6df1\u539a\u7684\u5b66\u672f\u5e95\u8574\u548c\u591a\u5b66\u79d1\u7684\u7efc\u5408\u4f18\u52bf\uff0c\u81f4\u529b\u4e8e\u8425\u9020\u56fd\u9645\u5316\u7684\u5b66\u672f\u521b\u65b0\u73af\u5883\uff0c\u5efa\u6210\u77f3\u58a8\u70ef\u7535\u5b50\u5b66\u4e0e\u56e2\u7c07\u7269\u7406\u5b66\u9886\u57df\u4e16\u754c\u4e00\u6d41\u7684\u56fd\u9645\u5316\u7814\u7a76\u5e73\u53f0\uff0c\u4e3a\u7956\u56fd\u57f9\u517b\u9510\u610f\u8fdb\u53d6\u6562\u4e3a\u4eba\u5148\u3001\u5177\u6709\u79d1\u7814\u521b\u65b0\u7cbe\u795e\u7684\u7814\u7a76\u578b\u4eba\u624d\uff0c\u670d\u52a1\u56fd\u5bb6\u91cd\u5927\u6218\u7565\u9700\u6c42\uff0c\u53d6\u5f97\u56fd\u9645\u4e00\u6d41\u7684\u7814\u7a76\u6210\u679c\u3002<\/p>\n

\u4f5c\u4e3a\u4e16\u754c\u4e0a\u6700\u4e3a\u5148\u8fdb\u7684\u5916\u5ef6\u77f3\u58a8\u70ef\u7814\u7a76\u4e2d\u5fc3\u4e4b\u4e00\uff0c\u80fd\u591f\u5b9e\u73b0\u78b3\u5316\u7845\u4efb\u610f\u6676\u9762\u7684\u5207\u5272\u3001\u78e8\u629b\u3001\u5927\u9762\u79ef\u5168\u8986\u76d6\u5355\u5c42\u77f3\u58a8\u70ef\u7684\u751f\u957f\u4ee5\u53ca\u5668\u4ef6\u5236\u5907\u7684\u5168\u5957\u5de5\u827a\u6d41\u7a0b<\/b><\/strong>\u3002\u5229\u7528\u76f8\u5173\u5de5\u827a\uff0c\u672c\u5b9e\u9a8c\u5ba4\u4e0e\u6d6a\u6f6e\u5f00\u5c55\u4e86\u91cf\u5b50\u82af\u7247\u5236\u9020\u5de5\u827a\u7684\u5408\u4f5c\u7814\u53d1\u3001\u627f\u63a5\u4e86\u4e2d\u56fd\u79d1\u6280\u5927\u5b66\u78b3\u5316\u7845\u77f3\u58a8\u70ef\u91cf\u5b50\u70b9\u592a\u8d6b\u5179\u63a2\u6d4b\u5668\u7684\u7814\u5236\u5de5\u4f5c\u3002\u672c\u5b9e\u9a8c\u5ba4\u5229\u7528\u8be5\u5de5\u827a\u6280\u672f\u5728\u4e16\u754c\u4e0a\u9996\u6b21\u6210\u529f\u5236\u5907SiC\u975e\u6781\u6027\u9762\u5927\u9762\u79ef\u751f\u957f\u7684\u5355\u6676\u5355\u5c42\u5916\u5ef6\u77f3\u58a8\u70ef\u3002\u7531\u4e8e\u8be5\u6750\u6599\u5177\u6709\u7684\u8d85\u8fc720\u5fae\u7c73\u7684\u5ba4\u6e29\u5f39\u9053\u81ea\u7531\u7a0b\u548c\u7535\u5b50\u76f8\u5e72\u957f\u5ea6\uff0c\u4e3a\u672a\u6765\u91cf\u5b50\u8ba1\u7b97\u673a\u5728\u5ba4\u6e29\u4e0b\u5b9e\u73b0\u5e26\u6765\u4e86\u65b0\u7684\u66d9\u5149\u3002<\/p>\n

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