{"id":117670,"date":"2017-12-20T06:30:37","date_gmt":"2017-12-19T22:30:37","guid":{"rendered":"\/\/m.iemloyee.com\/?p=117670"},"modified":"2017-12-18T20:10:56","modified_gmt":"2017-12-18T12:10:56","slug":"nature-communications-%e5%b8%a6%e9%9a%99%e5%8f%af%e8%b0%83%e7%9a%84%e4%bc%98%e8%89%af%e5%8f%91%e5%85%89%e6%80%a7%e8%83%bdch3nh3pbbr3%e9%92%99%e9%92%9b%e7%9f%bf%e7%ba%b3%e7%b1%b3%e6%99%b6%e7%94%9f","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=117670","title":{"rendered":"Nature Communications: \u5e26\u9699\u53ef\u8c03\u7684\u4f18\u826f\u53d1\u5149\u6027\u80fdCH3NH3PbBr3\u9499\u949b\u77ff\u7eb3\u7c73\u6676\u751f\u957f\u673a\u7406\u7814\u7a76"},"content":{"rendered":"

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

\u91d1\u5c5e\u5364\u5316\u7269\u9499\u949b\u77ff\u7eb3\u7c73\u6676(NCs)\u5728\u591a\u65b9\u9762\u5177\u6709\u6f5c\u5728\u7684\u5e94\u7528\uff0c\u5982LED\uff0c\u5149\u63a2\u6d4b\u7b49\u7b49\u3002\u7136\u800c\uff0c\u7531\u4e8e\u91d1\u5c5e\u5364\u5316\u7269\u9499\u949b\u77ff\u5177\u6709\u4f4e\u7684\u5f62\u6210\u80fd\u548c\u5feb\u901f\u7684\u7ed3\u6676\u901f\u7387\uff0c\u5728\u73b0\u6709\u7684\u5408\u6210\u65b9\u6cd5\u5f88\u96be\u63d0\u51fa\u5177\u4f53\u7684\u5f62\u6210\u673a\u7406\u3002\u5728\u5168\u65e0\u673a\u9886\u57df\uff0cDe Mello\u548cKovalenko\u7b49\u4eba\u5229\u7528\u4e00\u4e2a\u5fae\u6d41\u4f53\u53cd\u5e94\u5e73\u53f0\u63ed\u793a\u4e86CsPbX3<\/sub> NCs\u7684\u5f62\u6210\u8fc7\u7a0b\uff0c\u5e76\u4f18\u5316\u4e86\u5408\u6210\u53c2\u6570\uff1bSnaith\u7ec4\u7814\u7a76\u4e86\u8fc7\u9971\u548c\u548c\u7ed3\u6676\u5bf9\u4e8e\u5757\u4f53\u9499\u949b\u77ff\u5355\u6676\u7684\u5f71\u54cd\uff1bPan\u7ec4\u7814\u7a76\u4e86\u4e0d\u540c\u7684\u914d\u4f53\u5bf9CsPbX3<\/sub> NCs\u7684\u5f71\u54cd\uff1b\u7136\u800c\uff0c\u76ee\u524d\u5c1a\u7f3a\u4e4f\u5bf9CH3<\/sub>NH3<\/sub>PbBr3<\/sub>\u9499\u949b\u77ffNCs\u53ca\u5176\u53ef\u8c03\u5e26\u9699NCs\u7684\u6e7f\u5316\u5b66\u5408\u6210\u5f71\u54cd\u56e0\u7d20\u7684\u7cfb\u7edf\u7814\u7a76\uff0c\u4ee5\u53ca\u76f8\u5173\u7684\u751f\u957f\u673a\u5236\uff0c\u8fd9\u7c7b\u5de5\u4f5c\u5bf9\u4e8e\u80f6\u4f53\u9499\u949b\u77ffNCs\u7684\u8fdb\u4e00\u6b65\u53d1\u5c55\u548c\u6539\u8fdb\u73b0\u6709\u7684\u5408\u6210\u65b9\u6cd5\u5177\u6709\u6307\u5bfc\u610f\u4e49\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u9999\u6e2f\u57ce\u5e02\u5927\u5b66Andrey L. Rogach\u56e2\u961f<\/strong>\u5728Nature Communications<\/strong>\u4e0a\u53d1\u8868\u4e86\u4e00\u7bc7\u9898\u4e3a\u201cGrowth mechanism of strongly emitting CH3<\/sub>NH3<\/sub>PbBr3<\/sub> perovskite nanocrystals with a tunable bandgap<\/strong>\u201d\u7684\u6587\u7ae0\u3002\u5728\u8be5\u6587\u7ae0\u4e2d\u7814\u7a76\u4eba\u5458\u901a\u8fc7\u6539\u53d8\u524d\u9a71\u4f53\u548c\u914d\u4f53\u6d53\u5ea6\u5728\u5ba4\u6e29\u548c60\u00b0C\u6761\u4ef6\u4e0b\u5747\u5f97\u5230\u4e86\u5e26\u9699\u53ef\u8c03\u4e14\u5177\u6709\u5f3a\u70c8\u53d1\u5149\u6027\u80fd\u7684CH3<\/sub>NH3<\/sub>PbBr3<\/sub> NCs\uff0c\u540c\u65f6\uff0c\u4ed6\u4eec\u8be6\u7ec6\u8ba8\u8bba\u4e86\u6cb9\u80fa(OAL)\u548c\u6cb9\u9178(OA)\u8fd9\u4e24\u79cd\u914d\u4f53\u5bf9\u94c5\u524d\u9a71\u4f53\u548cNCs\u8868\u9762\u7684\u534f\u8c03\u4f5c\u7528\uff0c\u901a\u8fc7\u7ed3\u5408\u5b9e\u9a8c\u7ed3\u679c\u548c\u5f62\u6838\/\u751f\u957f\u7406\u8bba\u6a21\u578b\u7684\u65b9\u5f0f\u9610\u660e\u4e86NCs\u7684\u751f\u957f\u673a\u7406\uff0c\u8fd9\u9879\u5de5\u4f5c\u6709\u52a9\u4e8e\u9499\u949b\u77ff\u9886\u57df\u8fdb\u4e00\u6b65\u7814\u7a76\u5de5\u4f5c\u7684\u5f00\u5c55\u5e76\u4e14\u5bf9\u4e8e\u6539\u8fdb\u5408\u6210\u65b9\u6cd5\u5177\u6709\u6307\u5bfc\u610f\u4e49\u3002<\/p>\n

\u3010\u56fe\u6587\u89e3\u8bfb\u3011<\/strong><\/p>\n

\u56fe\u4e00 \u5149\u5438\u6536\u548c\u5149\u81f4\u53d1\u5149\u7814\u7a76<\/strong><\/p>\n

\"\"
\n (a-c) CH3<\/sub>NH3<\/sub>PbBr3<\/sub> NCs\u6837\u54c1\u7684\u5149\u5438\u6536\u8c31\uff1b<\/p>\n

(d-f) CH3<\/sub>NH3<\/sub>PbBr3<\/sub> NCs\u6837\u54c1\u7684\u5149\u81f4\u53d1\u5149\u8c31\uff1b
\n \u5176\u4e2da,d\u548cb,e\u5206\u522b\u4e3a\u5ba4\u6e29\u548c60\u2103\u6761\u4ef6\u4e0b\u5408\u6210\u7684\u6837\u54c1\uff0c\u524d\u9a71\u4f53\u4e3a\u53d8\u91cf\uff0c\u914d\u4f53\u4e3a (5\u03bcL OLA \/ 50\u03bcL OA)\uff1bc\u3001f\u8868\u793a\u5ba4\u6e29\u4e0b\u5b9a\u91cf\u524d\u9a71\u4f53(1\u00d7)\u4e0d\u540c\u91cf\u914d\u4f53\u5408\u6210\u6837\u54c1\u7684\u5149\u8c31\u3002<\/p>\n

\u56fe\u4e8c CH3<\/sub>NH3<\/sub>PbBr3<\/sub>\u7eb3\u7c73\u6676\u7684\u7ed3\u6784\u548c\u7ec4\u5206\u5206\u6790\u3002<\/strong><\/p>\n

\"\"<\/p>\n

(a) CH3<\/sub>NH3<\/sub>PbBr3<\/sub>NCs\u7684TEM\u5168\u8c8c\uff08\u6807\u5c3a\uff0c100 nm\uff09\uff1b<\/p>\n

(b) \u5ba4\u6e29\u5408\u6210\u7684CH3<\/sub>NH3<\/sub>PbBr3<\/sub>\u5927\u4e2aNCs\u7684HRTEM\u56fe\u50cf\uff08\u6807\u5c3a\uff0c10 nm\uff09\uff1b<\/p>\n

(c) HAADF\u56fe\u50cf\uff1b<\/p>\n

(d-f) \u76f8\u5e94\u533a\u57df\u7684Pb\uff0cBr\u5143\u7d20\u9762\u626b\u56fe\u50cf\uff08\u6807\u5c3a\uff0c20 nm\uff09\u3002<\/p>\n

\u56fe\u4e09 \u6837\u54c1\u7684\u8367\u5149\u5bff\u547d\u5206\u6790<\/strong><\/p>\n

\"\"
\n \u5ba4\u6e29\u4e0b\u4e0d\u540c\u524d\u9a71\u4f53\u6d53\u5ea6\u5f97\u5230\u7684CH3<\/sub>NH3<\/sub>PbBr3<\/sub> NCs\u8367\u5149\u5bff\u547d\u53ca\u5176\u53cc\u6307\u6570\u62df\u5408\u56fe\u50cf\uff0c\u63d2\u56fe\u4e3a\u8f90\u5c04\u590d\u5408\u548c\u975e\u8f90\u5c04\u590d\u5408\u5bff\u547d\u76f8\u5bf9\u4e8e\u524d\u9a71\u4f53\u6d53\u5ea6\u7684\u53d8\u5316\u8d8b\u52bf<\/p>\n

\u56fe\u56db \u00a0\u9499\u949b\u77ffNCs\u751f\u957f\u8fc7\u7a0b\u6a21\u578b\u53ca\u8ba8\u8bba\uff1a\u56db\u79cd\u4e0d\u540c\u7684\u60c5\u51b5\u4e0b\u6539\u53d8\u65f6\u95f4\uff0c\u524d\u9a71\u4f53\u6d53\u5ea6<\/strong><\/p>\n

\"\"
\n \u56fe\u7684\u4e0a\u534a\u90e8\u5206\u663e\u793a\u4e86\u5728\u5782\u76f4\u865a\u7ebf\u8868\u793a\u7684\u7279\u5b9a\u60c5\u51b5\u4e0b\u7684\u9499\u949b\u77ffNCs\u7684PL\u5149\u8c31\u4f4d\u7f6e\u7279\u5f81\uff1a<\/p>\n

\u7b2c\u4e00\u79cd\u60c5\u51b5\uff0c\u524d\u9a71\u4f53\u7684\u6d53\u5ea6 (0.01\u00d7)\u5bf9\u4e8e\u6210\u6838\u8fc7\u7a0b\u6765\u8bf4\u592a\u4f4e\uff1b<\/p>\n

\u7b2c\u4e8c\u79cd\u60c5\u51b5\uff0c\u524d\u9a71\u4f53\u7684\u6d53\u5ea6(0.33\u00d7)\uff0c\u5bf9\u4e8eNCs\u6210\u6838\u540e\u7684\u751f\u957f\u8fd8\u4e0d\u8db3\u591f\u9ad8,\u4f46\u8db3\u591f\u5f62\u6210\u5c0f\u7684NCs\uff1b<\/p>\n

\u7b2c\u4e09\u79cd\u60c5\u51b5\uff0c\u53cd\u5e94\u6df7\u5408\u7269\u4e2d\u66f4\u591a\u7684\u524d\u9a71\u4f53\u53ef\u7528(1\u00d7)\uff0c\u5f62\u6210\u8f83\u5927\u7684\u9499\u949b\u77ff\u5fae\u7c92\u7684\u6982\u7387\u53d8\u5f97\u66f4\u9ad8\u3002\u6709\u4e24\u4e2a\u76f8\u4e92\u7ade\u4e89\u7684\u8fc7\u7a0b:\u5f62\u6838\u4e0e\u6709\u548c\u6ca1\u6709\u8fdb\u4e00\u6b65\u7684\u751f\u957f\uff0c\u9ad8\u7684\u524d\u9a71\u4f53\u6d53\u5ea6\u66f4\u6709\u53ef\u80fd\u5f62\u6210\u5927\u7684NCs\uff0c\u800c\u975eNCs\u6c89\u6dc0\u7684\u6570\u91cf\u589e\u52a0\uff1b<\/p>\n

\u7b2c\u56db,\u5728\u6700\u9ad8\u7684\u524d\u9a71\u4f53\u6d53\u5ea6\u4e0b(2.33\u00d7)\uff0c\u6210\u6838\u548c\u589e\u957f\u603b\u662f\u53d1\u751f,\u76f4\u5230\u591a\u4f59\u7684\u524d\u4f53\u6d53\u5ea6\u4e0b\u964d\u5230\u8db3\u591f\u4f4e\u7684\u6c34\u5e73\u3002<\/p>\n

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

\u8fd9\u9879\u5de5\u4f5c\u8868\u660e\uff1a\u4e0d\u540c\u6d53\u5ea6\u524d\u9a71\u4f53\u5ba4\u6e29\u548c\u52a0\u6e29\u6761\u4ef6\u4e0b\u7684\u914d\u4f53\u8f85\u52a9\u518d\u6c89\u6dc0\u6280\u672f\u5bf9\u4e8e\u5408\u6210\u5e26\u9699\u53ef\u8c03CH3<\/sub>NH3<\/sub>PbBr3<\/sub> NCs\u662f\u4e00\u79cd\u6709\u6548\u7684\u65b9\u6cd5\uff0c\u5408\u6210\u7684NCs\u7684\u53d1\u5c04\u5cf0\u8986\u76d6\u4e86555 \u2013 516 nm\u7684\u8303\u56f4\uff0c\u53d1\u5c04\u5cf0\u534a\u9ad8\u5bbd\u4e3a29 – 41 nm\uff0c\u5927\u9897\u7c92\u7684PL QYs\u8fbe\u523070%\u3002\u8be6\u7ec6\u8ba8\u8bba\u4e86OA \u548cOLA\u7684\u4f5c\u7528\uff0c\u5728\u8fd9\u4e24\u79cd\u914d\u4f53\u5b58\u5728\u7684\u60c5\u51b5\u4e0b\uff0c\u94c5\u524d\u9a71\u4f53\u7684\u5316\u5b66\u5f62\u5f0f\u4f1a\u5f71\u54cd\u5230\u9884\u8001\u5316\u8fc7\u7a0b\u548c\/\u6216\u8c03\u6574\u914d\u4f53\u7684\u7ed3\u5408\u987a\u5e8f\u3002\u91d1\u5c5e\u6709\u673a\u524d\u4f53\u7684\u5316\u5b66\u5f62\u5f0f\u4e0e\u5f62\u6210\u76ee\u6807NPs\u65f6\u524d\u4f53\u7684\u6709\u6548\u4f9b\u7ed9\u7387\u76f4\u63a5\u76f8\u5173\uff0c\u56e0\u6b64\u5bf9\u5c3a\u5bf8\u8c03\u8282\u80fd\u529b\u6709\u8f83\u5927\u7684\u5f71\u54cd\u3002\u5c06\u5b9e\u9a8c\u7ed3\u679c\u4e0e\u6210\u6838\/\u751f\u957f\u6a21\u578b\u7684\u539f\u7406\u76f8\u7ed3\u5408\uff0c\u9610\u660e\u4e86\u9499\u949b\u77ffNCs\u7684\u751f\u957f\u673a\u7406\uff0c\u9499\u949b\u77ffNCs\u7684\u5f62\u6210\u673a\u5236\u5c06\u6709\u52a9\u4e8e\u8fdb\u4e00\u6b65\u7814\u7a76\u8fd9\u4e00\u9886\u57df\uff0c\u5e76\u5c06\u4f5c\u4e3a\u6539\u8fdb\u5408\u6210\u65b9\u6cd5\u7684\u6307\u5bfc\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Growth mechanism of strongly emitting CH3NH3PbBr3 perovskite nanocrystals with a tunable bandgap<\/a>\uff08Nat. Commun, 2017, DOI: 10.1038\/s41467-017-00929-2\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7eb3\u7c73\u5b66\u672f\u7ec4\u8463\u8d85\u7136\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u6574\u7406\u7f16\u8f91\u3002<\/p>\n

\u6750\u6599\u725b\u7f51\u4e13\u6ce8\u4e8e\u8ddf\u8e2a\u6750\u6599\u9886\u57df\u79d1\u6280\u53ca\u884c\u4e1a\u8fdb\u5c55\uff0c\u8fd9\u91cc\u6c47\u96c6\u4e86\u5404\u5927\u9ad8\u6821\u7855\u535a\u751f\u3001\u4e00\u7ebf\u79d1\u7814\u4eba\u5458\u4ee5\u53ca\u884c\u4e1a\u4ece\u4e1a\u8005\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\u5927\u5bb6\u5ead<\/a>\u3002<\/p>\n

\u6b22\u8fce\u5927\u5bb6\u5230\u6750\u6599\u4eba\u5ba3\u4f20\u79d1\u6280\u6210\u679c\u5e76\u5bf9\u6587\u732e\u8fdb\u884c\u6df1\u5165\u89e3\u8bfb\uff0c\u6295\u7a3f\u90ae\u7bb1tougao@cailiaoren.com\u3002<\/p>\n

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