{"id":82845,"date":"2017-05-28T06:30:07","date_gmt":"2017-05-27T22:30:07","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=82845"},"modified":"2017-05-25T08:49:08","modified_gmt":"2017-05-25T00:49:08","slug":"%e7%8e%8b%e4%b8%ad%e6%9e%97%e9%99%a2%e5%a3%abnano-lett-%ef%bc%9a%e7%94%b1%e5%8e%8b%e7%94%b5-%e5%85%89%e7%94%b5%e5%ad%90%e6%95%88%e5%ba%94%e9%a9%b1%e5%8a%a8%e7%9a%84%e5%8f%91%e5%85%89%e6%95%88%e7%8e%87","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=82845","title":{"rendered":"\u738b\u4e2d\u6797\u9662\u58ebNano Lett.\uff1a\u7531\u538b\u7535-\u5149\u7535\u5b50\u6548\u5e94\u9a71\u52a8\u7684\u53d1\u5149\u6548\u7387\u9ad8\u4e14\u8870\u9000\u4f4e\u7684GaN\u57fa\u7d2b\u5916\u53d1\u5149\u4e8c\u6781\u7ba1"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

\u2162-\u6c2e\u57fa\u7d2b\u5916\uff08UV\uff09\u53d1\u5149\u4e8c\u6781\u7ba1\uff08LEDs\uff09\u7531\u4e8e\u5728\u6c34\u5904\u7406\u3001\u9ad8\u5bc6\u5ea6\u5149\u5b66\u6570\u636e\u5b58\u50a8\u3001\u533b\u7528\u8bbe\u5907\u6d88\u6bd2\u4ee5\u53ca\u751f\u7269\u6210\u50cf\u9886\u57df\u7684\u5e7f\u6cdb\u5e94\u7528\u800c\u5438\u5f15\u4e86\u7814\u7a76\u8005\u6781\u5927\u7684\u5173\u6ce8\u3002\u5c3d\u7ba1\u2162-\u6c2e\u57faLEDs\u5df2\u7ecf\u5546\u4e1a\u5316\u5e76\u4e14\u5927\u91cf\u4f7f\u7528\u5728\u9006\u5149\u548c\u4e00\u822c\u7167\u660e\u4e2d\uff0c\u4f46\u662f\u91cf\u5b50\u6548\u7387\u7684\u589e\u5f3a\u548c\u5149\u8f93\u51fa\u6548\u7387\u7684\u63d0\u9ad8\u4ecd\u7136\u662f\u8fdb\u4e00\u6b65\u964d\u4f4e\u6210\u672c\u540c\u65f6\u6269\u5927\u5176\u5e94\u7528\u8303\u56f4\u7684\u5fc5\u8981\u6761\u4ef6\u3002\u7279\u522b\u7684\u662f\uff0cUV LED\u5149\u6e90\u76f8\u5bf9\u8f83\u4f4e\u7684\u91cf\u5b50\u6548\u7387\u4ecd\u7136\u8fdc\u8fdc\u843d\u540e\u4e8e\u5904\u4e8e\u53ef\u89c1\u5149\u533a\u7684\u5668\u4ef6\u3002\u7406\u60f3\u60c5\u51b5\u4e0b\uff0c\u589e\u52a0\u7684\u7535\u6d41\u6ce8\u5165\u80fd\u591f\u4fc3\u8fdb\u5185\u91cf\u5b50\u6548\u7387\uff08IQE\uff09\u4ee5\u53caLEDs\u7684\u5149\u8f93\u51fa\u6548\u7387\u3002\u7136\u800c\uff0c\u8fd9\u4e00\u964d\u4f4e\u6210\u672c\u7684\u76f4\u63a5\u65b9\u6cd5\u7531\u4e8e\u79f0\u4e3a\u201c\u91cf\u5b50\u6548\u7387\u964d\u4f4e\u201d\u73b0\u8c61\u7684\u5b58\u5728\u800c\u4f7f\u5f97\u5728\u9ad8\u7535\u6d41\u5bc6\u5ea6\u4e0bIQE\u4f1a\u964d\u4f4e\u3002\u56e0\u6b64\uff0c\u627e\u5230\u89e3\u51b3\u201c\u91cf\u5b50\u6548\u7387\u964d\u4f4e\u201d\u73b0\u8c61\u7684\u65b9\u6cd5\u5c31\u6210\u4e3a\u4e86\u5f53\u52a1\u4e4b\u6025\u3002<\/p>\n

\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u6765\u81ea\u4f50\u6cbb\u4e9a\u7406\u5de5\u5b66\u9662\u3001\u4e2d\u79d1\u9662\u56fd\u5bb6\u7eb3\u7c73\u79d1\u5b66\u4e2d\u5fc3\u7684\u738b\u4e2d\u6797\u9662\u58eb\u548c\u534e\u5357\u5e08\u8303\u5927\u5b66\u7684\u674e\u8ff0\u4f53\u7814\u7a76\u5458\uff08\u5171\u540c\u901a\u8baf\uff09<\/strong>\u7b49\u4eba\u5bf9GaN\u57fa\u7d2b\u5916\u53d1\u5149\u4e8c\u6781\u7ba1\u8fdb\u884c\u4e86\u7814\u7a76\uff0c\u6240\u5f97\u5668\u4ef6\u4e0d\u4ec5\u5177\u6709\u589e\u5f3a\u7684\u53d1\u5149\u6548\u7387\uff0c\u540c\u65f6\u6291\u5236\u4e86\u91cf\u5b50\u6548\u7387\u964d\u4f4e\u7684\u73b0\u8c61\u3002\u76f8\u5173\u7814\u7a76\u6210\u679c\u4ee5\u201cSimultaneously Enhancing Light Emission and Suppressing Efficiency\u00a0Droop in GaN Microwire-Based Ultraviolet Light-Emitting Diode by\u00a0the Piezo-Phototronic Effect\u201d<\/strong>\u4e3a\u9898\u53d1\u8868\u5728\u4e862017\u5e745\u670810 \u65e5\u7684Nano Letters<\/strong>\u4e0a\u3002<\/p>\n

\u5b9e\u9a8c\u4e2d\u5f97\u5230\u4e86\u540c\u8d28\u7684GaN p-n\u7ed3\u2162-\u6c2e\u57fa\u53d1\u5149\u4e8c\u6781\u7ba1\uff0c\u5e76\u8bc1\u5b9e\u4e86\u5728\u538b\u7535-\u5149\u7535\u5b50\u6548\u5e94\u4f5c\u7528\u4e0bGaN\u7eb3\u7c73\u7ebf\u57fap-n\u7ed3\u7d2b\u5916\u53d1\u5149\u4e8c\u6781\u7ba1\u7684\u53d1\u5149\u6548\u7387\u8f83\u9ad8\u4e14\u91cf\u5b50\u6548\u7387\u8870\u51cf\u88ab\u6291\u5236\u3002\u901a\u8fc7\u65bd\u52a0-0.12%\u7684\u5782\u76f4\u4e8ep-n\u7ed3\u754c\u9762\u7684\u9759\u7535\u538b\u7f29\u5f62\u53d8\uff0cLED\u7684\u76f8\u5bf9\u5916\u91cf\u5b50\u6548\u7387\u589e\u5f3a\u8d85\u8fc7\u4e86600%\uff0c\u540c\u65f6\uff0c\u91cf\u5b50\u6548\u7387\u8870\u51cf\u4ece46.6%\u964d\u4f4e\u52307.5%\uff0c\u5bf9\u5e94\u7684\u8d77\u59cb\u7535\u6d41\u5bc6\u5ea6\u79fb\u52a8\u4ece10\u8f6c\u79fb\u523026.7A cm-1<\/sup>\u3002\u6587\u4e2d\u8fd8\u4ece\u7406\u8bba\u4e0a\u8bc1\u5b9e\u4e86\u7531\u538b\u7535-\u5149\u7535\u5b50\u6548\u5e94\u5f15\u8d77\u7684\u589e\u5f3a\u7684\u7535\u5b50\u675f\u7f1a\u548c\u7a7a\u7a74\u6ce8\u5165\u7684\u63d0\u9ad8\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u56fe1 GaN\u7eb3\u7c73\u7ebf\u57faLEDs\u7684\u4e00\u822c\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09<\/strong>GaN\u7eb3\u7c73\u7ebf\u7684\u539f\u5b50\u7ed3\u6784\u6a21\u578b\uff08a1\uff09\u548cLED\u7684\u793a\u610f\u56fe\uff08a2\uff09<\/p>\n

\uff08b\uff09<\/strong>GaN\u7eb3\u7c73\u7ebf\u672b\u7aef\u7684\u5149\u53d1\u5c04<\/p>\n

\uff08c\uff09<\/strong>LED\u7684I-V\u7279\u6027\u66f2\u7ebf<\/p>\n

\uff08d\uff09<\/strong>GaN\u7eb3\u7c73\u7ebf\u57faLED\u7684\u5ba4\u6e29-\u7535\u81f4\u53d1\u5149\uff08EL\uff09\u5149\u8c31\u548c\u5bf9\u5e94\u7684EL\u5149\u8c31\u7684\u9ad8\u65af\u51fd\u6570\u5cf0\u53cd\u5377\u79ef\u66f2\u7ebf<\/p>\n

\u56fe2 \u538b\u7535-\u5149\u7535\u5b50\u6548\u5e94\u5f15\u8d77\u7684\u589e\u5f3a\u7684\u53d1\u5149\u5f3a\u5ea6<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09<\/strong>\u538b\u7f29\u5f62\u53d8\u4e0b\u8868\u5f81GaN\u7eb3\u7c73\u7ebf\u57faLED\u6027\u80fd\u7684\u81ea\u5236\u6d4b\u8bd5\u7cfb\u7edf\u793a\u610f\u56fe<\/p>\n

\uff08b\uff09<\/strong>\u4e0d\u540c\u538b\u7f29\u5f62\u53d8\u4e0b\u65bd\u52a0\u6b63\u5411\u504f\u538b\u65f6LED\u7684I-V\u66f2\u7ebf<\/p>\n

\uff08c\uff09<\/strong>\u4e0d\u540c\u538b\u7f29\u5f62\u53d8\u4e0b20 \u03bcA\u6ce8\u5165\u7535\u6d41\u65f6LED\u7684\u5149\u5b66\u5149\u8c31\u56fe\u548c\u5bf9\u5e94\u7684\u4e0d\u540c\u5916\u52a0\u5e94\u53d8\u4e0b\u7eb3\u7c73\u7ebf\u7684CCD\u56fe\u50cf<\/p>\n

\uff08d\uff09<\/strong>\u5728\u9010\u6e10\u589e\u52a0\u7684\u538b\u7f29\u5e94\u53d8\u4e0bLED\u7684\u6574\u5408EL\u5f3a\u5ea6\uff08\u54c1\u7ea2\uff09\u548c\u76f8\u5bf9EQE\uff08\u84dd\u8272\uff09\u7684\u53d8\u5316<\/p>\n

\u56fe3 \u7531\u538b\u7535-\u5149\u7535\u5b50\u6548\u5e94\u5f15\u8d77\u7684\u5bf9\u91cf\u5b50\u6548\u7387\u4e0b\u964d\u7684\u6291\u5236<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09<\/strong>\u4e0d\u540c\u7535\u6d41\u5bc6\u5ea6\u65f6\u5728\u6301\u7eed\uff08\u5de6\uff09\u548c\u8109\u51b2\uff08\u53f3\uff09\u6a21\u5f0f\u4e0b\u7684EL\u5149\u8c31<\/p>\n

\uff08b\uff09<\/strong>\u5728\u6301\u7eed\uff08\u54c1\u7ea2\uff09\u548c\u8109\u51b2\uff08\u84dd\u8272\uff09\u6a21\u5f0f\u4e0b\u6301\u7eed\u589e\u52a0\u6ce8\u5165\u7535\u6d41\u5bc6\u5ea6\u65f6\u5cf0\u503c\u6ce2\u957f\u7684\u53d8\u5316<\/p>\n

\uff08c\uff09<\/strong>\u4e0d\u540c\u538b\u7f29\u5e94\u529b\u4e0b\u6bcf\u4e00\u6ce8\u5165\u7535\u6d41\u5bc6\u5ea6\uff08J\uff09\u70b9\u901a\u8fc7\u03a8\/J\u8868\u73b0\u51fa\u7684LED\u7684\u76f8\u5bf9EQE(\u03b7ex<\/sub>)<\/p>\n

\uff08d\uff09<\/strong>\u91cf\u5b50\u6548\u7387\u8870\u51cf\u8d77\u59cb\u7535\u6d41\u5bc6\u5ea6\u548c\u6548\u7387\u964d\u4f4e\u503c\u76f8\u5bf9\u4e8e\u5916\u90e8\u5f20\u529b\u7684\u53d8\u5316<\/p>\n

\uff08e\uff09<\/strong>\u5728\u6bcf\u4e00\u6ce8\u5165\u7535\u6d41\u5bc6\u5ea6\u6761\u4ef6\u4e0b\u03b7ex<\/sub>\u7684\u76f8\u5bf9\u53d8\u5316<\/p>\n

\u56fe4 \u7406\u8bba\u6a21\u62df\u7ed3\u679c\u53ca\u7269\u7406\u673a\u5236<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09<\/strong>\u5728-0.12%\u538b\u7f29\u5e94\u53d8\u4e0b\u538b\u7535\u7535\u52bf\u7684\u6574\u4f53\u5206\u5e03<\/p>\n

\uff08b\uff09<\/strong>\u7a7f\u8fc7LED\u5782\u76f4\u4e8ep-n\u7ed3\u754c\u9762\u7684\u538b\u7535\u7535\u52bf\u503c<\/p>\n

\uff08c\uff09<\/strong>LED\u5668\u4ef6\u5728\u65e0\u5e94\u53d8\uff08\u5de6\uff09\u548c\u538b\u7f29\u5e94\u53d8\uff08\u53f3\uff09\u6761\u4ef6\u4e0b\u538b\u7535\u7535\u52bf\u7684\u4ea7\u751f\u548c\u5bf9\u5e94\u7684\u80fd\u5e26\u7ed3\u6784<\/p>\n

\u3010\u5c0f\u7ed3\u3011<\/strong><\/p>\n

\u672c\u6587\u5c06\u538b\u7535-\u5149\u7535\u5b50\u6548\u5e94\u5e94\u7528\u5728\u4e86GaN\u7eb3\u7c73\u7ebf\u57fap-n\u540c\u8d28\u7ed3\u53d1\u5149\u4e8c\u6781\u7ba1\u4e2d\uff0c\u6240\u5f97\u5668\u4ef6\u5177\u6709\u589e\u5f3a\u7684\u91cf\u5b50\u6548\u7387\u7684\u540c\u65f6\u5176\u91cf\u5b50\u6548\u7387\u8870\u51cf\u5f97\u5230\u4e86\u6291\u5236\u3002\u901a\u8fc7\u5bf9p-n\u7ed3\u65bd\u52a0\u538b\u7f29\u5e94\u53d8\u53ef\u4ee5\u4f7fLED\u7684EQE\u589e\u5f3a\u8d85\u8fc7600%\uff0c\u800c\u4e14\u91cf\u5b50\u6548\u7387\u8870\u51cf\u964d\u4f4e\u3002\u6587\u4e2d\u8fd8\u5bf9\u5176\u4e2d\u7684\u7269\u7406\u673a\u5236\u8fdb\u884c\u4e86\u8be6\u7ec6\u8ba8\u8bba\u548c\u63cf\u8ff0\u3002\u672c\u6587\u7684\u5de5\u4f5c\u4e0d\u4ec5\u5bf9\u538b\u7535-\u5149\u7535\u5b50\u6548\u5e94\u5728p-n\u540c\u8d28\u7ed3\u4e2d\u7684\u4f5c\u7528\u6709\u4e86\u6df1\u523b\u7684\u7406\u89e3\uff0c\u800c\u4e14\u4e3a\u53d1\u5c55\u9ad8\u6548\u3001\u53d1\u5149\u5f3a\u5ea6\u9ad8\u4ee5\u53ca\u9ad8\u529f\u7387\u7684III-\u6c2e\u53ef\u89c1\/\u7d2b\u5916\u53d1\u5149\u4e8c\u6781\u7ba1\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b0\u9896\u7684\u65b9\u6cd5\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aSimultaneously Enhancing Light Emission and Suppressing Efficiency\u00a0Droop in GaN Microwire-Based Ultraviolet Light-Emitting Diode by\u00a0the Piezo-Phototronic Effect<\/a><\/strong>\uff08Nano Lett., 2017, DOI: 10.1021\/acs.nanolett.7b01004\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7535\u5b50\u7535\u5de5\u5b66\u672f\u7ec4\u5927\u57ce\u5c0f\u7231\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002\u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\uff0c\u5982\u679c\u60a8\u5bf9\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u8fdb\u5c55\uff0c\u89e3\u8bfb\u9ad8\u6c34\u5e73\u6587\u7ae0\u6216\u662f\u8bc4\u8ff0\u884c\u4e1a\u6709\u5174\u8da3\uff0c\u70b9\u6211\u52a0\u5165\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n

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