{"id":1797,"date":"2018-12-17T03:55:52","date_gmt":"2018-12-17T03:55:52","guid":{"rendered":""},"modified":"2018-12-17T11:56:47","modified_gmt":"2018-12-17T03:56:47","slug":"%e5%a2%9e%e5%bc%ba%e5%9e%8b%e5%92%8c%e8%80%97%e5%b0%bd%e5%9e%8b%e5%9c%ba%e6%95%88%e5%ba%94%e6%99%b6%e4%bd%93%e7%ae%a1","status":"publish","type":"post","link":"http:\/\/www.szryc.com\/?p=1797","title":{"rendered":"\u589e\u5f3a\u578b\u548c\u8017\u5c3d\u578b\u573a\u6548\u5e94\u6676\u4f53\u7ba1"},"content":{"rendered":"

\n\t\u603b\u7684\u6765\u8bf4\uff0c\u573a\u6548\u5e94\u6676\u4f53\u7ba1\u53ef\u533a\u5206\u4e3a\u8017\u5c3d\u578b\u548c\u589e\u5f3a\u578b\u4e24\u79cd\u3002\u8017\u5c3d\u578b\u573a\u6548\u5e94\u6676\u4f53\u7ba1(D-FET)\u5c31\u662f\u57280\u6805\u504f\u538b\u65f6\u5b58\u5728\u6c9f\u9053\u3001\u80fd\u591f\u5bfc\u7535\u7684FET;\u589e\u5f3a\u578b\u573a\u6548\u5e94\u6676\u4f53\u7ba1(E-FET)\u5c31\u662f\u57280\u6805\u504f\u538b\u65f6\u4e0d\u5b58\u5728\u6c9f\u9053\u3001\u4e0d\u80fd\u591f\u5bfc\u7535\u7684FET\u3002<\/p>\n

\n\t\u3000\u3000\u8fd9\u4e24\u79cd\u7c7b\u578b\u7684FET\u5404\u6709\u5176\u7279\u70b9\u548c\u7528\u9014\u3002\u4e00\u822c\uff0c\u589e\u5f3a\u578bFET\u5728\u9ad8\u901f\u3001\u4f4e\u529f\u8017\u7535\u8def\u4e2d\u5f88\u6709\u4f7f\u7528\u4ef7\u503c;\u5e76\u4e14\u8fd9\u79cd\u5668\u4ef6\u5728\u5de5\u4f5c\u65f6\uff0c\u5b83\u7684\u6805\u504f\u7535\u538b\u7684\u6781\u6027\u4e0e\u6f0f\u6781\u7535\u538b\u7684\u76f8\u540c\uff0c\u5219\u5728\u7535\u8def\u8bbe\u8ba1\u4e2d\u8f83\u4e3a\u65b9\u4fbf\u3002<\/p>\n

\n\t\u3000\u3000(1)MOSFET\uff1a<\/p>\n

\n\t\u3000\u3000\u5bf9\u4e8eSi\u534a\u5bfc\u4f53\u5668\u4ef6\uff0c\u7531\u4e8eSi\/SiO2\u754c\u9762\u4e0a\u7535\u8377(\u591a\u534a\u662f\u6b63\u7535\u8377——Na+\u6cbe\u6c61\u6240\u81f4)\u7684\u5f71\u54cd\uff0c\u4f7f\u5f97n\u578b\u534a\u5bfc\u4f53\u8868\u9762\u5bb9\u6613\u4ea7\u751f\u79ef\u7d2f\u5c42\uff0c\u800cp\u578b\u534a\u5bfc\u4f53\u8868\u9762\u5bb9\u6613\u53cd\u578b(\u5373\u51fa\u73b0\u8868\u9762\u53cd\u578b\u5c42)\uff0c\u6240\u4ee5\u6bd4\u8f83\u5bb9\u6613\u5236\u9020\u51fap\u6c9f\u9053\u7684\u589e\u5f3a\u578bMOSFET(E-MOSFET)\uff0c\u800c\u8f83\u96be\u4ee5\u5236\u4f5c\u51fan\u6c9f\u9053\u7684E-MOSFET\u3002\u6b63\u56e0\u4e3a\u5982\u6b64\uff0c\u6545\u5728\u65e9\u671f\u5de5\u827a\u6c34\u5e73\u6761\u4ef6\u4e0b\uff0c\u5e38\u5e38\u5236\u4f5c\u7684\u662fp\u6c9f\u9053\u7684E-MOSFET\u3002<\/p>\n

\n\t\u3000\u3000\u5f53\u7136\uff0c\u968f\u7740\u5de5\u827a\u6280\u672f\u6c34\u5e73\u7684\u63d0\u9ad8\uff0c\u73b0\u5728\u5df2\u7ecf\u80fd\u591f\u5f88\u597d\u5730\u63a7\u5236\u534a\u5bfc\u4f53\u7684\u8868\u9762\u6001\u4ee5\u53ca\u8868\u9762\u7535\u8377\uff0c\u4ece\u800c\u5c31\u80fd\u591f\u65b9\u4fbf\u5730\u5236\u4f5c\u51fan\u6c9f\u9053\u3001\u6216\u8005p\u6c9f\u9053\u7684D-MOSFET\u6216\u8005E-MOSFET\uff0c\u4ee5\u9002\u5e94\u5404\u79cd\u5e94\u7528\u7684\u9700\u8981\u3002<\/p>\n

\n\t\u3000\u3000MOSFET\u7684\u5bfc\u7535\u662f\u4f9d\u9760\u8868\u9762\u6c9f\u9053\u6765\u8fdb\u884c\u7684\uff0c\u800c\u57280\u6805\u504f\u538b\u4e0b\u80fd\u5426\u4ea7\u751f\u6c9f\u9053\uff0c\u5219\u4e0e\u534a\u5bfc\u4f53\u886c\u5e95\u7684\u63ba\u6742\u6d53\u5ea6\u76f4\u63a5\u6709\u5173\u3002\u82e5\u91c7\u7528\u8f83\u4f4e\u63ba\u6742\u6d53\u5ea6\u7684\u886c\u5e95\uff0c\u5c31\u53ef\u4ee5\u83b7\u5f97D-MOSFET;\u91c7\u7528\u8f83\u9ad8\u63ba\u6742\u6d53\u5ea6\u7684\u886c\u5e95\uff0c\u5c31\u53ef\u4ee5\u83b7\u5f97E-MOSFET\u3002<\/p>\n

\n\t\u3000\u3000(2)JFET\uff1a<\/p>\n

\n\t\u3000\u3000\u5bf9\u4e8e\u7ed3\u578b\u573a\u6548\u5e94\u6676\u4f53\u7ba1(JFET)\uff0c\u6700\u5e38\u89c1\u5230\u7684\u662f\u8017\u5c3d\u578bJFET(D-JFET);\u4e00\u822c\uff0c\u4e0d\u4f7f\u7528\u589e\u5f3a\u578bJFET(E-JFET)\u3002\u8fd9\u4e3b\u8981\u662f\u7531\u4e8e\u957f\u6c9f\u9053E-JFET\u5728\u4f7f\u7528\u65f6\u8f83\u96be\u4ee5\u4ea7\u751f\u51fa\u5bfc\u7535\u7684\u6c9f\u9053\u3001\u4ece\u800c\u5bfc\u901a\u6027\u80fd\u4e0d\u597d\u7684\u7f18\u6545\u3002\u4e0d\u8fc7\uff0c\u7531\u4e8e\u9ad8\u901f\u3001\u4f4e\u529f\u8017\u7535\u8def\u4e2d\u5e94\u7528\u7684\u9700\u8981\uff0c\u6709\u65f6\u4e5f\u9700\u8981\u91c7\u7528E-JFET\u3002<\/p>\n

\n\t\u3000\u3000JFET\u5bfc\u7535\u7684\u6c9f\u9053\u5728\u4f53\u5185\u3002\u8fd9\u4e24\u79cd\u6676\u4f53\u7ba1\u5728\u5de5\u827a\u548c\u7ed3\u6784\u4e0a\u7684\u5dee\u522b\u4e3b\u8981\u5728\u4e8e\u5176\u6c9f\u9053\u533a\u7684\u63ba\u6742\u6d53\u5ea6\u548c\u539a\u5ea6\u3002D-JFET\u7684\u6c9f\u9053\u7684\u63ba\u6742\u6d53\u5ea6\u8f83\u9ad8\u3001\u539a\u5ea6\u8f83\u5927\uff0c\u4ee5\u81f4\u4e8e\u6805pn\u7ed3\u7684\u5185\u5efa\u7535\u538b\u4e0d\u80fd\u628a\u6c9f\u9053\u5b8c\u5168\u8017\u5c3d;\u800cE-JFET\u7684\u6c9f\u9053\u7684\u63ba\u6742\u6d53\u5ea6\u8f83\u4f4e\u3001\u539a\u5ea6\u8f83\u5c0f\uff0c\u5219\u6805pn\u7ed3\u7684\u5185\u5efa\u7535\u538b\u5373\u53ef\u628a\u6c9f\u9053\u5b8c\u5168\u8017\u5c3d\u3002<\/p>\n

\n\t\u3000\u3000\u4f46\u662f\uff0c\u5bf9\u4e8e\u77ed\u6c9f\u9053E-JFET\uff0c\u60c5\u51b5\u5219\u6709\u6240\u4e0d\u540c\uff0c\u56e0\u4e3a\u8fd9\u79cd\u6676\u4f53\u7ba1\u7684\u6f0f\u6781\u7535\u538b\u53ef\u4ee5\u4f5c\u7528\u5230\u6e90\u6781\u9644\u8fd1\uff0c\u4f7f\u5f97\u6c9f\u9053\u4e2d\u7684\u52bf\u5792\u964d\u4f4e\uff0c\u6240\u4ee5\u80fd\u591f\u5f62\u6210\u5bfc\u7535\u6c9f\u9053\u3002\u8fd9\u79cdE-JFET\u4ece\u672c\u8d28\u4e0a\u6765\u8bf4\u4e5f\u5c31\u662f\u9759\u7535\u611f\u5e94\u6676\u4f53\u7ba1\u3002<\/p>\n

\n\t(3)MESFET\uff1a<\/p>\n

\n\t\u3000\u3000\u91d1\u5c5e\u6805\u6781\u534a\u5bfc\u4f53\u573a\u6548\u5e94\u6676\u4f53\u7ba1(MESFET)\u662f\u901a\u8fc7\u6805\u6781Schottky\u52bf\u5792\u4e0b\u9762\u8017\u5c3d\u5c42\u539a\u5ea6\u7684\u53d8\u5316\u6765\u63a7\u5236\u5bfc\u7535\u6c9f\u9053\u5bbd\u5ea6\u3001\u5e76\u4ece\u800c\u63a7\u5236\u8f93\u51fa\u6e90-\u6f0f\u7535\u6d41\u7684\u3002<\/p>\n

\n\t\u3000\u3000MESFET\u7684\u5bfc\u7535\u6c9f\u9053\u662f\u91d1\u5c5e\u6805\u6781\u4e0b\u9762\u7684\u672a\u88ab\u8017\u5c3d\u7684\u534a\u5bfc\u4f53\u5c42——\u6c9f\u9053\u5c42\u3002\u5982\u679c\u6c9f\u9053\u5c42\u7684\u63ba\u6742\u6d53\u5ea6\u8f83\u9ad8\u3001\u539a\u5ea6\u8f83\u5927\uff0c\u5219\u57280\u6805\u504f\u538b\u4e0b\uff0c\u6805\u6781Schottky\u52bf\u5792\u7684\u5185\u5efa\u7535\u538b\u4e0d\u8db3\u4ee5\u8017\u5c3d\u6574\u4e2a\u6c9f\u9053\u5c42\uff0c\u5373\u5b58\u5728\u6c9f\u9053\uff0c\u8fd9\u5c31\u662f\u8017\u5c3d\u578bMESFET(D-MESFET);\u76f8\u53cd\uff0c\u5982\u679c\u6c9f\u9053\u5c42\u7684\u63ba\u6742\u6d53\u5ea6\u8f83\u4f4e\u3001\u539a\u5ea6\u8f83\u8584\uff0c\u5219\u57280\u6805\u504f\u538b\u4e0b\uff0c\u6805\u6781Schottky\u52bf\u5792\u7684\u5185\u5efa\u7535\u538b\u5c31\u53ef\u4ee5\u8017\u5c3d\u6574\u4e2a\u6c9f\u9053\u5c42\uff0c\u5373\u4e0d\u5b58\u5728\u6c9f\u9053\uff0c\u8fd9\u5c31\u662f\u589e\u5f3a\u578bMESFET(E-MESFET)\u3002<\/p>\n

\n\t\u3000\u3000(4)HEMT\uff1a<\/p>\n

\n\t\u3000\u3000\u9ad8\u7535\u5b50\u8fc1\u79fb\u7387\u6676\u4f53\u7ba1(HEMT)\u662f\u5229\u7528\u8c03\u5236\u63ba\u6742\u7a81\u53d8\u5f02\u8d28\u7ed3\u4e2d\u7684\u4e8c\u7ef4\u7535\u5b50\u6c14(2-DEG)——\u9ad8\u8fc1\u79fb\u7387\u7684\u4e8c\u7ef4\u7535\u5b50\u6765\u5de5\u4f5c\u7684\uff0c\u5bfc\u7535\u6c9f\u9053\u4e5f\u5c31\u662f2-DEG\u8584\u5c42\u3002\u63a7\u52362-DEG\u7684\u6d53\u5ea6(\u9762\u5bc6\u5ea6)\uff0c\u5373\u53ef\u63a7\u5236\u8f93\u51fa\u6e90-\u6f0f\u7535\u6d41\u7684\u5927\u5c0f\u3002\u57280\u6805\u504f\u538b\u4e0b\uff0c\u6709\u54262-DEG\uff0c\u4e5f\u5c31\u662f\u8017\u5c3d\u578b\u4e0e\u589e\u5f3a\u578b\u5668\u4ef6\u7684\u6839\u672c\u533a\u522b\u3002<\/p>\n

\n\t\u3000\u3000\u5728HEMT\u4e2d\uff0c2-DEG\u51fa\u73b0\u5728\u7a81\u53d8\u7684\u8c03\u5236\u63ba\u6742\u5f02\u8d28\u7ed3\u4e2d\uff0c\u5bbd\u7981\u5e26\u534a\u5bfc\u4f53\u4e00\u8fb9\u63ba\u6709\u65bd\u4e3b\u6742\u8d28\uff0c\u7a84\u7981\u5e26\u534a\u5bfc\u4f53\u4e00\u8fb9\u4e0d\u63ba\u6742(\u5373\u4e3a\u672c\u5f81\u534a\u5bfc\u4f53)\u3002\u5bf9\u4e8eGaAs\u4f53\u7cfb\u7684HEMT\uff0c\u5bbd\u7981\u5e26\u534a\u5bfc\u4f53\u662fn\u578bAlGaAs\uff0c\u7a84\u7981\u5e26\u534a\u5bfc\u4f53\u662fi-GaAs;\u91d1\u5c5e\u6805\u6781\u7684\u4e0b\u9762\u5c31\u662fn\u578bAlGaAs\u5c42——\u79f0\u4e3a\u9876\u5c42\uff0c\u5b83\u4eec\u5f62\u6210Schottky\u52bf\u5792(\u52bf\u5792\u9ad8\u5ea6\u4e00\u822c\u4e3a1eV\u5de6\u53f3)\u3002\u5982\u679cn\u578bAlGaAs\u9876\u5c42\u7684\u63ba\u6742\u6d53\u5ea6\u9002\u5f53\u9ad8\u3001\u539a\u5ea6\u9002\u5f53\u5927\uff0c\u5219\u57280\u6805\u504f\u538b\u4e0b\u5c31\u4f1a\u51fa\u73b02-DEG\uff0c\u56e0\u6b64\u662f\u8017\u5c3d\u578bFET\u3002\u4f46\u662f\uff0c\u5982\u679cn\u578bAlGaAs\u9876\u5c42\u7684\u63ba\u6742\u6d53\u5ea6\u8f83\u4f4e\u3001\u539a\u5ea6\u8f83\u8584\uff0c\u5219\u5728Schottky\u52bf\u5792\u7684\u5185\u5efa\u7535\u538b\u4f5c\u7528\u4e0b\u5373\u5c06\u8017\u5c3d2-DEG\uff0c\u5373Schottky\u52bf\u5792\u53ef\u4f38\u5165\u5230i-GaAs\u5c42\uff0c\u5219HEMT\u57280\u6805\u504f\u538b\u4e0b\u4e0d\u4f1a\u5bfc\u7535\uff0c\u56e0\u6b64\u662f\u589e\u5f3a\u578bFET\u3002\u603b\u4e4b\uff0c\u5bf9\u4e8eHEMT\uff0c\u4e3b\u8981\u662f\u63a7\u5236\u63ba\u6742\u5bbd\u7981\u5e26\u534a\u5bfc\u4f53\u5c42\u7684\u63ba\u6742\u6d53\u5ea6\u548c\u539a\u5ea6\u3002<\/p>\n

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