{"id":156126,"date":"2018-10-15T06:30:47","date_gmt":"2018-10-14T22:30:47","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=156126"},"modified":"2018-10-17T16:05:38","modified_gmt":"2018-10-17T08:05:38","slug":"%e5%8d%97%e4%ba%ac%e5%b7%a5%e4%b8%9a%e5%a4%a7%e5%ad%a6%e9%bb%84%e7%bb%b4%e9%99%a2%e5%a3%ab%e5%9b%a2%e9%98%9fnature%ef%bc%9a%e5%9f%ba%e4%ba%8e%e8%87%aa%e5%8f%91%e5%bd%a2%e6%88%90%e7%9a%84%e4%ba%9a","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=156126","title":{"rendered":"\u5357\u4eac\u5de5\u4e1a\u5927\u5b66\u9ec4\u7ef4\u9662\u58eb\u56e2\u961fNature\uff1a\u57fa\u4e8e\u81ea\u53d1\u5f62\u6210\u7684\u4e9a\u5fae\u7c73\u7ea7\u7ed3\u6784\u7684\u9499\u949b\u77ff\u53d1\u5149\u4e8c\u6781\u7ba1"},"content":{"rendered":"

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

\u5c06\u7535\u8f6c\u6362\u4e3a\u5149\u7684\u53d1\u5149\u4e8c\u6781\u7ba1\uff08LED\uff09\u5e7f\u6cdb\u7528\u4e8e\u73b0\u4ee3\u793e\u4f1a\uff0c\u4f8b\u5982\uff0c\u7167\u660e\uff0c\u5e73\u677f\u663e\u793a\u5668\uff0c\u533b\u7597\u8bbe\u5907\u548c\u8bb8\u591a\u5176\u4ed6\u65b9\u9762\u3002\u901a\u5e38\uff0cLED\u7684\u6548\u7387\u53d7\u5230\u975e\u8f90\u5c04\u590d\u5408\uff08\u7535\u8377\u8f7d\u6d41\u5b50\u91cd\u65b0\u7ec4\u5408\u800c\u4e0d\u91ca\u653e\u5149\u5b50\uff09\u548c\u5149\u6355\u83b7\u7684\u9650\u5236\u3002\u5728\u5e73\u9762LED\uff08\u5982\u6709\u673aLED\uff09\u4e2d\uff0c\u53d1\u5c04\u5668\u53d1\u51fa\u7684\u5149\u5927\u7ea6\u670970%\u81f380%\u88ab\u6355\u83b7\u5728\u5668\u4ef6\u4e2d\uff0c\u8fd9\u4e3a\u63d0\u9ad8\u6548\u7387\u7559\u4e0b\u4e86\u76f8\u5f53\u5927\u7684\u673a\u4f1a\u3002\u8bb8\u591a\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528\u884d\u5c04\u5149\u6805\uff0c\u4f4e\u6298\u5c04\u7387\u6805\u683c\u548c\u5c48\u66f2\u6a21\u5f0f\uff0c\u5df2\u88ab\u7528\u4e8e\u63d0\u53d6\u88ab\u56f0\u5728LED\u4e2d\u7684\u5149\u3002\u7136\u800c\uff0c\u8fd9\u4e9b\u65b9\u6cd5\u901a\u5e38\u6d89\u53ca\u5230\u590d\u6742\u7684\u5236\u9020\u8fc7\u7a0b\uff0c\u53ef\u80fd\u4f1a\u626d\u66f2\u5149\u8f93\u51fa\u5149\u8c31\u548c\u65b9\u5411\u6027\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u5728\u5357\u4eac\u5de5\u4e1a\u5927\u5b66<\/b><\/strong>\u9ec4\u7ef4\u9662\u58eb\uff08\uff08\u76ee\u524d\u5355\u4f4d\u897f\u5317\u5de5\u5de5\u4e1a\u5927\u5b66\uff09\uff09<\/b><\/strong>\u548c\u738b\u5efa\u6d66<\/b><\/strong>\u6559\u6388\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/b><\/strong>\u56e2\u961f\u7684\u5e26\u9886\u4e0b\uff0c\u4e0e\u6d59\u6c5f\u5927\u5b66<\/b><\/strong>\u3001\u5357\u4eac\u90ae\u7535\u5927\u5b66<\/b><\/strong>\u548c\u897f\u5317\u5de5\u4e1a\u5927\u5b66<\/b><\/strong>\u5408\u4f5c\uff0c\u5c55\u793a\u4e86\u6eb6\u6db2\u52a0\u5de5\u7684\u9499\u949b\u77ff\u7684\u9ad8\u6548\u548c\u9ad8\u4eae\u5ea6\u7535\u81f4\u53d1\u5149\uff0c\u81ea\u53d1\u5f62\u6210\u4e9a\u5fae\u7c73\u7ea7\u7ed3\u6784\uff0c\u5b83\u80fd\u6709\u6548\u5730\u4ece\u5668\u4ef6\u4e2d\u63d0\u53d6\u5149\uff0c\u5e76\u4fdd\u6301\u4e0e\u6ce2\u957f\u548c\u89c6\u89d2\u65e0\u5173\u7684\u7535\u81f4\u53d1\u5149\u3002\u8fd9\u4e9b\u9499\u949b\u77ff\u662f\u901a\u8fc7\u5728\u9499\u949b\u77ff\u524d\u9a71\u4f53\u6eb6\u6db2\u4e2d\u52a0\u5165\u6c28\u57fa\u9178\u6dfb\u52a0\u5242\u800c\u5f62\u6210\u7684\u3002\u6b64\u5916\uff0c\u6dfb\u52a0\u5242\u53ef\u6709\u6548\u949d\u5316\u9499\u949b\u77ff\u8868\u9762\u7f3a\u9677\u5e76\u51cf\u5c11\u975e\u8f90\u5c04\u590d\u5408\u3002\u9499\u949b\u77ffLED\u5177\u670920.7\uff05\u7684\u5cf0\u503c\u5916\u91cf\u5b50\u6548\u7387\uff08\u7535\u6d41\u5bc6\u5ea6\u4e3a18mA\/cm2<\/sup>\uff09\uff0c\u80fd\u91cf\u8f6c\u6362\u6548\u7387\u4e3a12\uff05\uff08\u572810mA\/cm2<\/sup>\u7684\u9ad8\u7535\u6d41\u5bc6\u5ea6\u4e0b\uff09\uff0c\u63a5\u8fd1\u6027\u80fd\u6700\u4f73\u7684\u6709\u673aLED\u7684\u4ef7\u503c\u3002\u76f8\u5173\u6210\u679c\u4ee5\u9898\u4e3a\u201cPerovskite light-emitting diodes based on spontaneously formed submicrometre-scale structures<\/b><\/strong>\u201d\u53d1\u8868\u5728\u4e86Nature<\/b><\/strong>\u4e0a\u3002<\/p>\n

\u00a0<\/b><\/strong>\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/b><\/strong><\/p>\n

\u56fe1<\/b><\/strong>\u5668\u4ef6\u5236\u9020\u548c\u4e9a\u5fae\u7c73\u7ed3\u6784\u7684\u5f62\u6210<\/b><\/strong>\"\"<\/p>\n

a\uff0c\u5668\u4ef6\u7684\u5236\u9020\u548c\u4e9a\u5fae\u7c73\u7ed3\u6784\u7684\u5f62\u6210\u3002\u56f0\u4e8e\u8fde\u7eed\u53d1\u5149\u5c42\u5668\u4ef6\u4e2d\u7684\u5149\u53ef\u4ee5\u901a\u8fc7\u4e9a\u5fae\u7c73\u7ed3\u6784\u63d0\u53d6\u5149\u7ebfA\uff0cB\u548cC\u3002<\/p>\n

b\uff0c\u5236\u9020\u7684\u88c5\u7f6e\u7684STEM\u56fe\u50cf\u3002\u6bd4\u4f8b\u5c3a\uff1a200nm\u3002<\/p>\n

c\uff0c\u9499\u949b\u77ff\u7684SEM\u56fe\u50cf\u3002\u6bd4\u4f8b\u5c3a\uff1a1\u03bcm\u3002<\/p>\n

d\uff0cITO\/ZnO-PEIE\/\u9499\u949b\u77ff\/Au\u7ed3\u6784\u7684\u6837\u54c1\u7684HAADF-STEM\u91cd\u5efa\u7684\u65ad\u5c42\u5207\u7247\u3002\u6bd4\u4f8b\u5c3a\uff1a500nm\u3002<\/p>\n

e\uff0c\u9ad8\u500d\u7387\u4e0b\u7684\u6a2a\u622a\u9762HAADF-STEM\u65ad\u5c42\u6444\u5f71\u56fe\u50cf\u3002\u6bd4\u4f8b\u5c3a\uff1a100nm\u3002<\/p>\n

f\uff0c\u5bf9\u5e94EDS\u590d\u5408\u56fe\u3002\u6bd4\u4f8b\u5c3a\uff1a100nm\u3002<\/p>\n

g\uff0c\u78b3\uff0c\u950c\u548c\u94c5\u7684EDS\u66f2\u7ebf\u6765\u81eaf\u4e2d\u6240\u793a\u7684\u7ebf\u3002<\/p>\n

\u56fe2<\/b><\/strong>AFM\u9ad8\u5ea6\u56fe\u50cf\u548c\u591a\u884c\u626b\u63cf<\/b><\/strong>\"\"<\/b><\/strong><\/p>\n

a\uff0cZnO-PEIE\/\u9499\u949b\u77ff\u3002\u9499\u949b\u77ff\u4e9a\u5fae\u7c73\u7ea7\u7247\u7684\u9ad8\u5ea6\u7ea6\u4e3a40-50nm\u3002\u6bd4\u4f8b\u5c3a\uff1a1\u03bcm\u3002<\/p>\n

b\uff0cZnO-PEIE\/\u9499\u949b\u77ff\/TFB\u3002\u8be5\u7ed3\u6784\u91cd\u590d\u4e86a\u4e2d\u6240\u793a\u7684\u9499\u949b\u77ff\u4e9a\u5fae\u7c73\u7ea7\u8584\u7247\u7684\u5f62\u6001\u3002\u6bd4\u4f8b\u5c3a\uff1a1\u03bcm\u3002<\/p>\n

c\uff0cZnO-PEIE\/\u9499\u949b\u77ff\/TFB\/MoOx\/Au\u3002\u8be5\u7ed3\u6784\u91cd\u590d\u4e86\u9499\u949b\u77ff\u5c42\u7684\u5f62\u6001\u3002\u6bd4\u4f8b\u5c3a\uff1a1\u03bcm\u3002<\/p>\n

\u56fe3<\/b><\/strong>\u4e9a\u5fae\u7c73\u7ed3\u6784\u9499\u949b\u77ff\u8584\u819c\u7684\u6027\u8d28<\/b><\/strong>\"\"<\/p>\n

a\uff0c\u8be5\u9499\u949b\u77ff\u5728ZnO-PEIE\u886c\u5e95\u4e0a\u7684\u5438\u6536\u548c\u5149\u81f4\u53d1\u5149\u5149\u8c31\u3002<\/p>\n

b\uff0c\u9499\u949b\u77ff\u8584\u819c\u7684XRD\u6570\u636e\u663e\u793a\u51fa\u03b1\u76f8FAPbI3<\/sub>\u7684\u7279\u5f81\uff0c\u5177\u6709\u826f\u597d\u7684\u7ed3\u6676\u5ea6\uff0c\u5728\u5782\u76f4\u65b9\u5411\u4e0a\u9ad8\u5ea6\u53d6\u5411\u3002<\/p>\n

c\uff0c\u6fc0\u53d1\u5f3a\u5ea6\u4f9d\u8d56\u6027PLQE\u7ed3\u679c\u663e\u793a\u9ad8\u8fbe70\uff05\u7684PLQE\uff1b\u5373\u4f7f\u6fc0\u53d1\u80fd\u91cf\u4f4e\u81f30.1mWcm-2<\/sup>\uff0cPLQE\u4ecd\u5927\u4e8e50\uff05\uff0c\u8868\u660e\u4f4e\u9677\u9631\u8f85\u52a9\u975e\u8f90\u5c04\u590d\u5408\u3002<\/p>\n

d\uff0c\u5728\u4e0d\u540c\u6fc0\u53d1\u5f3a\u5ea6\u4e0b\u4e9a\u5fae\u7c73\u7ed3\u6784\u9499\u949b\u77ff\u7684\u65f6\u95f4\u5206\u8fa8\u5149\u81f4\u53d1\u5149\u8870\u53d8\u77ac\u53d8\u3002\u5b9e\u7ebf\u6765\u81ea\u901a\u7528\u52a8\u529b\u5b66\u6a21\u578b\u62df\u5408\uff0c\u53ef\u4ee5\u83b7\u5f971.5\u00d71013<\/sup>cm-3<\/sup>\u7684\u4f4e\u9677\u9631\u5bc6\u5ea6\u3002<\/p>\n

\u56fe<\/b><\/strong>4<\/b><\/strong>\u9499\u949b\u77ffLED\u7684\u5149\u7535\u7279\u6027<\/b><\/strong>\"\"<\/p>\n

a\uff0c\u7535\u6d41\u5bc6\u5ea6\u548c\u8f90\u5c04\u5bf9\u7535\u538b\u7684\u4f9d\u8d56\u6027\u3002<\/p>\n

b\uff0c\u7ed8\u5236\u76f8\u5bf9\u4e8e\u7535\u6d41\u5bc6\u5ea6\u7684EQE\u548cECE\u3002\u572818mAcm-2<\/sup>\u7684\u7535\u6d41\u5bc6\u5ea6\u4e0b\u5b9e\u73b0\u4e8620.7\uff05\u7684\u5cf0\u503cEQE\u3002<\/p>\n

c\uff0c\u5cf0\u503cEQEs\u7684\u76f4\u65b9\u56fe\u3002\u6765\u81ea100\u4e2a\u88c5\u7f6e\u7684\u7edf\u8ba1\u663e\u793a\u5e73\u5747\u5cf0\u503cEQE\u4e3a19.2\uff05\uff0c\u76f8\u5bf9\u6807\u51c6\u504f\u5dee\uff08RSD\uff09\u4e3a4\uff05\u3002<\/p>\n

d\uff0c\u5668\u4ef6\u5728\u4e0d\u540c\u89c6\u89d2\u4e0b\u7684\u5149\u81f4\u53d1\u5149\uff08PL\uff09\u548c\u7535\u81f4\u53d1\u5149\uff08EL\uff09\u5149\u8c31\u3002<\/p>\n

e\uff0c\u8f90\u5c04\u5f3a\u5ea6\u7684\u89d2\u5ea6\u5206\u5e03\u9075\u5faa\u6717\u4f2f\u66f2\u7ebf\u3002<\/p>\n

f\uff0c\u5728100mAcm-2<\/sup>\u7684\u6052\u5b9a\u7535\u6d41\u5bc6\u5ea6\u4e0b\u6d4b\u91cf\u7684\u5668\u4ef6\u7684\u7a33\u5b9a\u6027\u3002<\/p>\n

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

\u5df2\u7ecf\u8bc1\u660e\uff0c\u901a\u8fc7\u6539\u5584\u5149\u8f93\u51fa\u8026\u5408\u53ef\u4ee5\u589e\u5f3a\u5e73\u9762\u578bLED\u7684EQE\u3002\u7136\u800c\uff0c\u4f20\u7edf\u4e0a\u8fd9\u9700\u8981\u590d\u6742\u7684\u5236\u9020\u5de5\u827a\uff0c\u5e76\u4e14\u96be\u4ee5\u5728\u4e0d\u540c\u7684\u89c6\u89d2\u4fdd\u6301\u4e00\u81f4\u7684\u53d1\u5c04\u5149\u8c31\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u901a\u8fc7\u4f7f\u7528\u6b64\u5904\u63cf\u8ff0\u7684\u7b80\u5355\u7b56\u7565\uff0c\u9499\u949b\u77ffLED\u53ef\u4ee5\u907f\u514d\u8fd9\u4e9b\u9650\u5236\uff0c\u800c\u4e14\u5236\u9020\u6210\u672c\u5f88\u4f4e\u3002\u7531\u6b64\u4ea7\u751f\u7684\u9499\u949b\u77ffLED\u5cf0\u503cEQE\u63a5\u8fd1\u6027\u80fd\u6700\u4f73\u7684\u6709\u673aLED\u3002\u4e0e\u57fa\u4e8eIII-V\u65cf\u534a\u5bfc\u4f53\u7684LED\u76f8\u6bd4\uff0c\u5728\u4f4e\u6e29\u4e0b\u5904\u7406\u7684\u6709\u673aLED\u4e2d\uff0c\u7531\u4e8e\u5176\u6fc0\u5b50\u7279\u6027\u548c\u4f4e\u7535\u8377\u8fc1\u79fb\u7387\uff0c\u96be\u4ee5\u5728\u9ad8\u7535\u6d41\u5bc6\u5ea6\u4e0b\u4fdd\u6301\u9ad8ECE\u3002\u4f46\u662f\uff0c\u4f4e\u6e29\u6eb6\u6db2\u5904\u7406\u7684\u9499\u949b\u77ffLED\u5728\u9ad8\u7535\u6d41\u5bc6\u5ea6\u4e0b\u8868\u73b0\u51fa\u975e\u5e38\u9ad8\u7684ECE\uff0c\u8fd9\u8868\u660e\u5728\u9ad8\u4eae\u5ea6\u4e0b\u5b9e\u73b0\u9ad8\u6548\u7387\u7684\u5927\u5e73\u9762LED\u7684\u72ec\u7279\u53ef\u80fd\u6027\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5<\/b><\/strong>\uff1a<\/b><\/strong>Perovskite<\/u>\u00a0<\/u>light-emitting<\/u>\u00a0<\/u>diodes<\/u>\u00a0<\/u>based<\/u>\u00a0<\/u>on<\/u>\u00a0<\/u>spontaneously<\/u>\u00a0<\/u>formed<\/u>\u00a0<\/u>submicrometre-scale<\/u>\u00a0<\/u>structures<\/u><\/a>\uff08Nature,2018,DOI\uff1a10.1038\/s41586-018-0576-2\uff09<\/p>\n

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