{"id":168725,"date":"2019-03-08T06:30:26","date_gmt":"2019-03-07T22:30:26","guid":{"rendered":"\/\/m.iemloyee.com\/?p=168725"},"modified":"2019-03-07T18:17:44","modified_gmt":"2019-03-07T10:17:44","slug":"%e3%80%90%e6%9c%aa%e5%9b%9e%e5%a4%8d%e3%80%91%e6%b2%b3%e5%8d%97%e5%a4%a7%e5%ad%a6%e4%b8%ad%e7%a7%91%e5%a4%a7nature-photonics%ef%bc%9a%e5%85%bc%e5%85%b7%e9%ab%98%e4%ba%ae%e5%ba%a6%e5%92%8c","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=168725","title":{"rendered":"\u6cb3\u5357\u5927\u5b66&\u4e2d\u79d1\u5927Nature Photonics\uff1a\u517c\u5177\u9ad8\u4eae\u5ea6\u548c\u9ad8\u6548\u7387\u7684\u53ef\u89c1\u533a\u91cf\u5b50\u70b9\u53d1\u5149\u4e8c\u6781\u7ba1"},"content":{"rendered":"

\u3010\u7814\u7a76\u80cc\u666f\u3011<\/strong><\/p>\n

\u4f17\u6240\u5468\u77e5\uff0c\u968f\u7740\u4e0a\u4e16\u7eaa\u4e5d\u5341\u5e74\u4ee3\u6c2e\u5316\u9553\u57fa\u9ad8\u4eae\u5ea6\u84dd\u5149LED\u7684\u7a81\u7834\uff0c\u5f00\u542f\u4e86LED\u7167\u660e\u548c\u663e\u793a\u7684\u65b0\u65f6\u4ee3\uff08\u4e09\u4f4d\u65e5\u672c\u79d1\u5b66\u5bb6\u56e0\u6b64\u8d21\u732e\u83b7\u5f97\u4e862014\u5e74\u8bfa\u8d1d\u5c14\u7269\u7406\u5956\uff09\u3002\u91cf\u5b50\u70b9\u53d1\u5149\u4e8c\u6781\u7ba1(QLEDs)\u7531\u4e8e\u5176\u6539\u5584\u4e86\u8272\u5f69\u9971\u548c\u5ea6\u3001\u4eae\u5ea6\u3001\u5149\u8c31\u53ef\u8c03\u6027\u548c\u8f83\u4f4e\u7684\u5236\u9020\u6210\u672c\uff0c\u5728\u663e\u793a\u5c4f\u548c\u7167\u660e\u8fd9\u4e24\u4e2a\u5177\u6709\u6df1\u8fdc\u6280\u672f\u610f\u4e49\u7684\u4e3b\u8981\u5e94\u7528\u9886\u57df\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u63a2\u7d22\u3002\u57fa\u4e8e\u91cf\u5b50\u70b9\u7684\u53d1\u5149\u4e8c\u6781\u7ba1\u7684\u6700\u65b0\u8fdb\u5c55\u5df2\u7ecf\u6ee1\u8db3\u4e86\u663e\u793a\u5668\u7684\u8981\u6c42\uff0c\u8fd9\u5fc5\u7136\u8981\u6c42\u9ad8\u5916\u90e8\u91cf\u5b50\u6548\u7387(EQE)\uff0c\u4f46\u5b83\u4eec\u7684\u5de5\u4f5c\u5728\u4e00\u4e2a\u76f8\u5bf9\u8f83\u4f4e\u7684\u4eae\u5ea6\u8303\u56f4\u5185(< 2000 cd\/m2<\/sup>)\u3002\u5bf9\u4e8e\u7167\u660e\uff0c\u5fc5\u987b\u540c\u65f6\u8d85\u8fc7\u4eae\u5ea6(~103-104 cd\/m2<\/sup>)\u548cEQE(~6%)\u7684\u9608\u503c\u3002\u7136\u800c\u5230\u76ee\u524d\u4e3a\u6b62\u51e0\u4e4e\u6240\u6709\u7684QLED\u8bbe\u5907\u5f00\u53d1\u8981\u4e48\u5728\u9ad8EQE\u4f46\u4f4e\u4eae\u5ea6\u6216\u76f8\u53cd\u3002\u5bf9\u4e8e\u7ea2\u8272QLEDs\uff0c\u867d\u7136EQE\u7531\u4e8e\u521b\u65b0\u7684\u8bbe\u5907\u8bbe\u8ba1\u800c\u589e\u52a0\u523018-20.5%\uff0c\u4f46\u5cf0\u503cEQE\u7684\u4eae\u5ea6\u4ecd\u7136\u5728100-2000 cd\/m2<\/sup>\u8303\u56f4\u5185\uff0c\u8fdc\u8fdc\u4f4e\u4e8e\u7167\u660e\u9608\u503c\u3002\u5bf9\u4e8e\u7eff\u8272QLEDs, 460,000 cd\/m2<\/sup>\u7684\u9ad8\u4eae\u5ea6\u548c6%\u7684EQE\u662f\u6700\u8fd1\u624d\u540c\u65f6\u5b9e\u73b0\u7684\u3002\u8fd9\u5bf9\u84dd\u8272QLEDs\u6765\u8bf4\u66f4\u5177\u6311\u6218\u6027\uff0c\u5373\u4f7f\u5cf0\u503cEQE\u5df2\u7ecf\u63d0\u9ad8\u523010%\u4ee5\u4e0a\uff0c\u5bf9\u5e94\u7684\u4eae\u5ea6\u4ecd\u7136\u975e\u5e38\u4f4e(\u7ea6102 cd\/m2<\/sup>)\u3002\u5982\u4f55\u4f7f\u5f97QLEDs\u5728\u9ad8\u4eae\u5ea6\u7684\u540c\u65f6\u4fdd\u6301\u9ad8\u6548\u7387\u3001\u4e14\u5177\u6709\u957f\u5bff\u547d\u548c\u9ad8\u7a33\u5b9a\u6027\uff0c\u662fQLED\u9886\u57df\u7684\u4e9f\u9700\u89e3\u51b3\u7684\u96be\u9898\uff0c\u4e5f\u662f\u5236\u7ea6\u5176\u5728\u9ad8\u4eae\u9ad8\u6548\u663e\u793a\u548c\u7167\u660e\u9886\u57df\u5e94\u7528\u7684\u5173\u952e\u6280\u672f\u74f6\u9888\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u6cb3\u5357\u5927\u5b66\u675c\u7956\u4eae\u6559\u6388\u3001\u674e\u6797\u677e\u6559\u6388\u548c\u4e2d\u56fd\u79d1\u6280\u5927\u5b66\u5f20\u632f\u5b87\u6559\u6388<\/strong>\u5171\u540c\u62a5\u9053\u4e86\u7ea2\u8272\uff0c\u7eff\u8272\u548c\u84dd\u8272QLED\u7684\u6700\u9ad8\u4eae\u5ea6\u8bb0\u5f55\uff0c\u6700\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u4eae\u5ea6\u548cEQE\u9608\u503c\u540c\u65f6\u88ab\u8d85\u8d8a\uff0c\u4f7f\u8fd9\u4e9b\u8bbe\u5907\u9002\u7528\u4e8e\u663e\u793a\u548c\u7167\u660e\u5e94\u7528\u3002\u4f5c\u8005\u4ece\u91cf\u5b50\u70b9\u7684\u5408\u6210\u8bbe\u8ba1\u5165\u624b\uff0c\u6784\u7b51\u4e86\u4ee5Se\u4e3a\u9634\u79bb\u5b50\u8d2f\u7a7f\u5143\u7d20\u7684\u65b0\u578b\u6838\u58f3\u7ed3\u6784\u9ad8\u91cf\u5b50\u4ea7\u7387\u91cf\u5b50\u70b9\uff08CdSe \/ ZnSe\uff09\u3002\u521d\u59cb\u4eae\u5ea6\u4e3a100 cd\/m2<\/sup>\u65f6\uff0c\u7ea2\u8272\uff0c\u7eff\u8272\u548c\u84dd\u8272QLED\u7684T50\u5de5\u4f5c\u5bff\u547d\uff08\u4eae\u5ea6\u964d\u4f4e\u5230\u521d\u59cb\u4eae\u5ea6\u7684\u4e00\u534a\u7684\u65f6\u95f4\uff09\u5206\u522b\u8fbe\u5230\u7ea61,600,000 h\uff0c1,700,000 h\u548c7,000h\u3002\u8be5\u6838\u58f3\u7ed3\u6784\u91cf\u5b50\u70b9\u5b9e\u73b0\u4e86Se\u5143\u7d20\u5168\u9897\u7c92\u5206\u5e03\u53ca\u6838\u3001\u58f3\u754c\u9762\u5904\u7684\u5408\u91d1\u6865\u8fde\uff0c\u6709\u6548\u964d\u4f4e\u4e86\u7a7a\u7a74\u6ce8\u5165\u52bf\u5792\uff0c\u4f18\u5316\u4e86\u91cf\u5b50\u70b9\u53d1\u5149\u5c42\u80fd\u7ea7\u4e0e\u7535\u8377\u4f20\u8f93\u5c42\u80fd\u7ea7\u7684\u5339\u914d\uff0c\u63d0\u9ad8\u4e86\u8f7d\u6d41\u5b50\u7684\u6ce8\u5165\u6548\u7387\uff0c\u514b\u670d\u4e86\u4ee5\u5f80QLED\u4e2d\u7531\u4e8e\u7a7a\u7a74\u6ce8\u5165\u4e0d\u8db3\u3001\u7535\u5b50\u6ce8\u5165\u8fc7\u591a\u6240\u5f15\u8d77\u7684\u4e00\u7cfb\u5217\u95ee\u9898\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u5668\u4ef6\u6574\u4f53\u6027\u80fd\u7684\u5927\u5e45\u5ea6\u63d0\u5347\u3002\u901a\u8fc7\u91cf\u5b50\u70b9\u6784\u7b51\u4e86\u9ad8\u6027\u80fd\u7ea2\u7eff\u84dd\u4e09\u539f\u8272QLED\u5668\u4ef6\uff0c\u5176\u6700\u9ad8\u4eae\u5ea6\u548c\u5916\u91cf\u5b50\u6548\u7387\u5206\u522b\u8fbe\u5230356,000 cd\/m2<\/sup>\u3001614,000 cd\/m2<\/sup>\u300162,600 cd\/m2<\/sup>\u548c21.6%\u300122.9%\u30018.05%\u3002\u8be5\u6210\u679c\u8fd1\u65e5\u4ee5\u9898\u4e3a\u201cVisible quantum dot light-emitting diodes with simultaneous high brightness and efficiency<\/strong>\u201d\u53d1\u8868\u5728\u77e5\u540d\u671f\u520aNature Photonics<\/strong>\u4e0a\u3002<\/p>\n

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

\u56fe\u4e00\uff1a\u5668\u4ef6\u7ed3\u6784\u53ca\u6027\u80fd<\/strong>
\n \"\"
\n \uff08a\uff09\u5668\u4ef6\u67b6\u6784\u4e2d\u4e0d\u540c\u5c42\u7684\u5e73\u9762\u793a\u610f\u56fe\uff1b
\n \uff08b\uff09\u7ea2\u8272\uff0c\u7eff\u8272\u548c\u84dd\u8272QLED\u7684\u7535\u6d41\u5bc6\u5ea6\u548c\u4eae\u5ea6\u968f\u7535\u538b\u7684\u53d8\u5316\u56fe\u793a\uff1b
\n \uff08c\uff09EQE\u4f5c\u4e3a\u4e09\u539f\u8272\u4eae\u5ea6\u7684\u51fd\u6570\uff0c\u5cf0\u503cEQE\u7531\u865a\u7ebf\u7a81\u51fa\u663e\u793a\uff1b
\n \uff08d\uff09\u7ea2\u8272\uff0c\u7eff\u8272\u548c\u84dd\u8272QLED\u7684\u5cf0\u503cEQE\u7684\u76f4\u65b9\u56fe\u3002<\/p>\n

\u56fe\u4e8c\uff1a\u4e09\u539f\u8272QLED\u5668\u4ef6\u7684\u5bff\u547d<\/strong>
\n \"\"
\n \uff08a-c\uff09\u4e0d\u540c\u521d\u59cb\u4eae\u5ea6\u4e0b\u7ea2\u7eff\u84ddQLEDs\u7684\u5bff\u547d\uff1b
\n \uff08d-f\uff09\u5728\u6052\u5b9a\u9a71\u52a8\u7535\u6d41\u548c\u6307\u5b9a\u521d\u59cb\u4eae\u5ea6\u7684\u73af\u5883\u6761\u4ef6\u4e0b\uff0c\u7ea2\u7eff\u84ddQLEDs\u7684\u4eae\u5ea6\u548c\u9a71\u52a8\u7535\u538b\u4e0e\u5de5\u4f5c\u65f6\u95f4\u7684\u5173\u7cfb\u3002<\/p>\n

\u56fe\u4e09\uff1a\u7eff\u8272QLEDs\u7684\u91cf\u5b50\u70b9\u5f62\u6001\u548c\u7ec4\u6210\u8868\u5f81<\/strong>
\n \"\"
\n \uff08a\uff09CdSe\/6ML ZnSe\u6838\/\u58f3QD\u7684HAADF-STEM\u56fe\u50cf\uff0cML-\u5355\u5c42\uff1b
\n \uff08b\uff09CdSe\/6ML ZnSe\u6838\/\u58f3QD\u7684STEM\u56fe\u50cf\uff1b
\n \uff08c-g\uff09\u5728b\u4e2d\u6240\u793a\u7684\u76f8\u540cCdSe\/6ML ZnSe\u6838\/\u58f3QD\u9635\u5217\u4e2d\u7684Cd\uff0cZn\u548cSe\u7684EDS\u56fe\u50cf\uff1b
\n \uff08h\uff09\u6765\u81eaQD\uff08\u9876\u90e8\uff09\u7684Cd\uff0cZn\u548cSe\u7684\u5143\u7d20\u5206\u5e03\uff0c\u5982\u6697\u573aSTEM\u56fe\u50cf\uff08\u5e95\u90e8\uff09\u4e2d\u7684\u7eff\u8272\u7bad\u5934\u6240\u793a\uff0cZn\u66f2\u7ebf\u7684\u4e0b\u964d\u8868\u793aZnSe\u7684\u58f3\u6027\u8d28\u3002<\/p>\n

\u56fe\u56db\uff1aQLED\u7684\u7b49\u6548\u7535\u8def\u6a21\u578b\u4ee5\u53ca\u6a21\u62df\u548c\u5b9e\u9a8c\u7ed3\u679c\u4e4b\u95f4\u7684\u6bd4\u8f83<\/strong>
\n \"\"
\n \uff08a\uff09\u7531\u4e09\u79cd\u4e0d\u540c\u7535\u6d41\u7ec4\u6210\u7684\u8fd0\u884c\u673a\u5236\uff1a\uff081\uff09\u901a\u8fc7QD\u7684\u7535\u6d41\uff08IQD\uff0c\u865a\u7ebf\u7bad\u5934\uff09;\uff082\uff09\u5206\u6d41\u7535\u6d41\uff08Ishunt\uff0c\u70b9\u5212\u7ebf\u7bad\u5934\uff09;\uff083\uff09\u65c1\u8def\u7535\u6d41\uff08IPN\uff0c\u865a\u7ebf\u7bad\u5934\uff09\uff1b
\n \uff08b\uff09a\u4e2d\u64cd\u4f5c\u673a\u6784\u7684\u7b49\u6548\u7535\u8def\u6a21\u578b\uff0c\u5176\u4e2d\u4e09\u4e2a\u7535\u6d41\u7531\u4e24\u4e2a\u5e76\u8054\u4e8c\u6781\u7ba1\u548c\u5206\u6d41\u7535\u963b\uff08Rshunt\uff09\u5efa\u6a21\uff1b
\n \uff08c\uff09EQE\u7684\u6a21\u62df\uff08\u7ebf\uff09\u548c\u5b9e\u9a8c\u7ed3\u679c\uff08\u70b9\uff09\u4e0e\u7535\u538b\u7684\u51fd\u6570\u5173\u7cfb\uff1b
\n \uff08d\uff09\u7535\u6d41\u7684\u6a21\u62df\uff08\u7ebf\uff09\u548c\u5b9e\u9a8c\u7ed3\u679c\uff08\u70b9\uff09\u4e0e\u7535\u538b\u7684\u51fd\u6570\u5173\u7cfb\u3002<\/p>\n

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

\u4f5c\u8005\u5df2\u7ecf\u5c55\u793a\u4e86\u4e09\u539f\u8272QLED\u7684\u9ad8\u6027\u80fd\uff0c\u5b83\u4eec\u5728\u9ad8\u4eae\u5ea6\u663e\u793a\u548c\u7167\u660e\u5e94\u7528\u4e2d\u8d85\u8d8a\u4e86\u4eae\u5ea6\u548cEQE\u9608\u503c\u3002\u5bf9\u4e8e\u7ea2\u8272\uff0c\u7eff\u8272\u548c\u84dd\u8272\uff0c\u89c2\u5bdf\u5230\u7684\u6700\u5927\u4eae\u5ea6\u503c\u5206\u522b\u4e3a356,000 cd\/m2<\/sup>\uff0c614,000 cd\/m2<\/sup>\u548c62,600 cd\/m2<\/sup>\uff0c\u8fd9\u662f\u8fc4\u4eca\u4e3a\u6b62\u6700\u4eae\u7684\u3002\u8fd9\u4e9b\u5668\u4ef6\u8fd8\u5177\u6709\u9ad8EFL\u4ee5\u53ca\u663e\u8457\u6539\u5584\u7684\u5bff\u547d\u548c\u4f18\u8d8a\u7684\u54cd\u5e94\u518d\u73b0\u6027\u3002\u4f5c\u8005\u8ba4\u4e3a\u6682\u65f6\u5e94\u5c06\u8fd9\u4e9b\u8fdb\u5c55\u5f52\u56e0\u4e8e\u4f7f\u7528ZnSe\u4f5c\u4e3a\u58f3\u6750\u6599\u4ee5\u53ca\u5728\u6574\u4e2aCdSe\/ZnSe\u6838\/\u58f3\u533a\u57df\u4e2d\u5b58\u5728Se\uff0c\u4ece\u800c\u5728\u4f4e\u7535\u538b\u4e0b\u4ea7\u751f\u9ad8\u8d28\u91cf\u7684\u754c\u9762\uff0c\u5e73\u8861\u7684\u7535\u8377\u6ce8\u5165\u548c\u9ad8\u7535\u6d41\u5bc6\u5ea6\u3002\u4f5c\u8005\u8fd8\u5f00\u53d1\u4e86\u4e00\u79cd\u7b49\u6548\u7535\u8def\u6a21\u578b\uff0c\u7528\u4e8e\u6355\u83b7\u5668\u4ef6\u5de5\u4f5c\u671f\u95f4\u7684\u4e3b\u8981\u89c2\u6d4b\u503c\u3002\u603b\u4e4b\uff0c\u8fd9\u9879\u5de5\u4f5c\u4ee3\u8868\u7740QLEDs\u5728\u5b9e\u73b0\u9ad8\u4eae\u5ea6\u3001\u9ad8\u6548\u7387\u548c\u4f4e\u5904\u7406\u6210\u672c\u7684\u663e\u793a\u548c\u6f5c\u5728\u7167\u660e\u5e94\u7528\u65b9\u9762\u5411\u524d\u8fc8\u51fa\u4e86\u91cd\u8981\u4e00\u6b65\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aVisible quantum dot light-emitting diodes with simultaneous high brightness and efficiency<\/a> (Nature Photonics<\/em>, 2019<\/strong>, DOI: 10.1038\/s41566-019-0364-z)<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7eb3\u7c73\u7ec4\u5927\u5175\u54e5\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

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