{"id":63020,"date":"2017-01-29T06:30:14","date_gmt":"2017-01-28T22:30:14","guid":{"rendered":"\/\/m.iemloyee.com\/?p=63020"},"modified":"2017-08-04T19:22:54","modified_gmt":"2017-08-04T11:22:54","slug":"jacs%ef%bc%9a%e5%af%b9%e6%b7%b7%e5%90%88%e4%ba%8c%e7%bb%b4%e9%92%99%e9%92%9b%e7%9f%bf%e8%96%84%e8%86%9c%e5%86%85%e9%83%a8%e5%85%89%e7%94%9f%e7%94%b5%e5%ad%90%e8%87%aa%e5%88%86%e7%a6%bb%e7%8e%b0","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=63020","title":{"rendered":"JACS\uff1a\u5bf9\u6df7\u5408\u4e8c\u7ef4\u9499\u949b\u77ff\u8584\u819c\u5185\u90e8\u5149\u751f\u7535\u5b50\u81ea\u5206\u79bb\u73b0\u8c61\u7684\u89c2\u5bdf"},"content":{"rendered":"

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

\u4ec5\u6709\u51e0\u4e2a\u539f\u5b50\u539a\u5ea6\u7684\u6750\u6599\u4f1a\u5448\u73b0\u51fa\u4e0e\u56fa\u6001\u6750\u6599\u975e\u5e38\u4e0d\u540c\u7684\u6027\u8d28\uff0c\u54ea\u6015\u5b83\u4eec\u7684\u5206\u5b50\u7ec4\u6210\u76f8\u540c\u3002\u5373\u4fbf\u5757\u72b6\u6750\u6599\u662f\u539f\u6765\u7684\uff0c\u5982\u679c\u4f60\u5c06\u5b83\u5236\u6210\u4e8c\u7ef4\u5f62\u6001\uff0c\u5b83\u5c31\u4f1a\u5c55\u73b0\u51fa\u4e00\u7247\u65b0\u5929\u5730\u3002\u8fd1\u5e74\u6765\uff0c\u4e8c\u7ef4\u5c42\u72b6\u6750\u6599\u56e0\u5176\u72ec\u7279\u7684\u6027\u80fd\u548c\u5e7f\u9614\u7684\u524d\u666f\u5e94\u7528\u5f15\u8d77\u4eba\u4eec\u8d8a\u6765\u8d8a\u591a\u7684\u5173\u6ce8\u3002\u5176\u4e2d\uff0c\u4e8c\u7ef4\u5c42\u72b6\u9499\u949b\u77ff\u6750\u6599\u56e0\u5176\u72ec\u7279\u7684\u51e0\u4f55\u7ed3\u6784\u3001\u53ef\u53d8\u7684\u5e26\u9699\u80fd\u91cf\u548c\u8f83\u9ad8\u7684\u7a33\u5b9a\u6027\u7b49\u4f18\u5f02\u6027\u80fd\uff0c\u4f7f\u5176\u5728\u5149\u4f0f\u548c\u5149\u7535\u5668\u4ef6\u9886\u57df\u5907\u53d7\u77a9\u76ee\u3002<\/p>\n

\u76ee\u524d\uff0c\u4e8c\u7ef4\u5c42\u72b6\u9499\u949b\u77ff\uff08BA\uff092<\/sub>\uff08MA\uff09n\u22121 <\/sub>Pb n<\/sub>I3n+1<\/sub>\uff08BA = CH 3<\/sub>\uff08CH 2<\/sub>\uff093<\/sub> NH 3<\/sub>+<\/sup>\uff0cMA= CH3 <\/sub>NH3<\/sub>+<\/sup>\uff09\u9762\u4e34\u7684\u95ee\u9898\u662f\uff1a\u5176\u8584\u819c\u5185\u542b\u6709\u4e0d\u540cn\u503c\u7684\u4e8c\u7ef4\u9499\u949b\u77ff\u6df7\u5408\u7269\uff0c\u4e14\u76ee\u524d\u7684\u5236\u5907\u65b9\u6cd5\u65e0\u6cd5\u63a7\u5236\u8fd9\u4e00\u73b0\u8c61\u7684\u4ea7\u751f\u3002\u5728\u8584\u819c\u5185\u90e8\uff0c\u4e0d\u540cn\u503c\u7684\u9499\u949b\u77ff\u7684\u6392\u5217\u5206\u5e03\u548c\u80fd\u5e26\u7684\u6392\u5217\u987a\u5e8f\u90fd\u662f\u672a\u77e5\u7684\uff0c\u4ed6\u4eec\u662f\u5426\u4f1a\u8bf1\u5bfc\u81ea\u53d1\u6027\u80fd\u91cf\u4f20\u9012\u7b49\u73b0\u8c61\u4e5f\u662f\u672a\u77e5\u7684\u3002\u8fd9\u4e00\u95ee\u9898\u7684\u63a2\u7a76\u80fd\u591f\u6709\u6548\u7684\u89e3\u51b3\u5149\u751f\u7535\u8377\u7684\u754c\u9762\u63d0\u53d6\u6548\u7387\u95ee\u9898\u3002\u4fc3\u8fdb\u4e8c\u7ef4\u5c42\u72b6\u9499\u949b\u77ff\u6750\u6599\u5728\u80fd\u6e90\u9886\u57df\u7684\u5e94\u7528\u3002<\/p>\n

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

\u4e2d\u79d1\u9662\u5927\u8fde\u5316\u7269\u6240\u91d1\u76db\u70e8<\/span>\u7814\u7a76\u5458\uff08\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u5e26\u9886\u8d85\u5feb\u65f6\u95f4\u5206\u8fa8\u5149\u8c31\u4e0e\u52a8\u529b\u5b66\u7814\u7a76\u56e2\u961f\uff0c\u6210\u529f\u5728\u4e8c\u7ef4\u5c42\u72b6\u9499\u949b\u77ff\u8584\u819c\u5185\u90e8\u89c2\u6d4b\u5230\u5149\u8bf1\u5bfc\u7684\u7535\u5b50\u548c\u7a7a\u7a74\u5728\u5782\u76f4\u57fa\u5e95\u65b9\u5411\u4e0a\u53d1\u751f\u7684\u81ea\u53d1\u6027\u7535\u8377\u5206\u79bb\uff0c\u76f8\u5173\u6210\u679c\u53d1\u5e03\u5728JOURNAL OF THE AMERICAN CHEMICAL SOCIETY<\/em><\/span>\u6742\u5fd7\u4e0a\uff0c\u9898\u76ee\u4e3a\uff1aObservation of Internal Photoinduced Electron and Hole Separation in Hybrid 2-Dimentional Perovskite Films<\/em><\/span>\u3002<\/strong>\u7814\u7a76\u4eba\u5458\u91c7\u7528\u77ac\u6001\u5438\u6536\u5149\u8c31\u6280\u672f\u548c\u8367\u5149\u5149\u8c31\u6280\u672f\uff0c\u5bf9\u5305\u542bn=2\uff0c3\uff0c4\u548cn\u2248\u221e\u7684\u4e8c\u7ef4\u9499\u949b\u77ff\u6df7\u5408\u7269\uff08BA\uff092<\/sub>\uff08MA\uff09n\u22121 <\/sub>Pb n<\/sub>I3n+1<\/sub>\uff08BA = CH 3<\/sub>\uff08CH 2<\/sub>\uff093<\/sub> NH 3<\/sub>+<\/sup>\uff0cMA= CH3 <\/sub>NH3<\/sub>+<\/sup>\uff09\u53ca\u5176\u8f7d\u6d41\u5b50\u52a8\u529b\u5b66\u8fdb\u884c\u4e86\u7814\u7a76\u3002\u901a\u8fc7\u4ece\u8584\u819c\u7684\u524d\u7aef\u548c\u540e\u7aef\u8fdb\u884c\u6fc0\u52b1\u53d1\u73b0\uff0c\u4e0d\u540cn\u503c\u7684\u9499\u949b\u77ff\u6df7\u5408\u7269\u901a\u5e38\u6cbf\u5782\u76f4\u4e8e\u886c\u5e95\u7684\u65b9\u5411\u81ea\u7136\u6392\u5e8f\u3002\u7531\u4e8e\u4e8c\u7ef4\u9499\u949b\u77ff\u76f8\u4e4b\u95f4\u7684\u80fd\u5e26\u6392\u5217\u7684\u9a71\u52a8\uff0c\u89c2\u5bdf\u53d1\u73b0\uff1a\u7535\u5b50\u4ece\u5c0fn\u5411\u5927n\u7684\u65b9\u5411\u8fc1\u79fb\uff0c\u800c\u7a7a\u7a74\u8fc1\u79fb\u65b9\u5411\u76f8\u53cd\u3002\u8fd9\u79cd\u5185\u90e8\u7684\u7535\u8377\u8f6c\u79fb\u9ad8\u6548\u7684\u5206\u79bb\u4e86\u8584\u819c\u4e0a\u4e0b\u8868\u9762\u7684\u7535\u5b50\u548c\u7a7a\u7a74\u3002<\/p>\n

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

\u56fe\u4e00\uff1a\u5149\u8c31\u56fe\u548c\u80fd\u7ea7\u7684\u6bd4\u8f83<\/span><\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\uff08BA\uff092<\/sub>\uff08MA\uff09n\u22121<\/sub>Pbn<\/sub>I3n+1<\/sub>\u4e8c\u7ef4\u9499\u949b\u77ff\u8584\u819c\uff08\u539a\u5ea6\u7ea6\u4e3a358 nm \uff0c n = 4\uff09\u7684\u7d2b\u5916-\u53ef\u89c1\u5438\u6536\u5149\u8c31\u3002\u5f53\u9499\u949b\u77ff\u76f8n = 2\uff082.17 eV\uff09\uff0cn = 3\uff082.04 eV\uff09\uff0cn = 4\uff081.93 eV\uff09\u548cn\u2248\u221e\u65f6\uff0c\u9499\u949b\u77ff\u8584\u819c\u5177\u6709\u591a\u4e2a\u5438\u6536\u5cf0\u3002<\/p>\n

\uff08b\uff09\u4ece\u4e8c\u7ef4\u9499\u949b\u77ff\u8584\u819c\u6b63\u9762\u548c\u53cd\u9762\u7167\u660e\u7684\u53d1\u5c04\u5149\u8c31\u6bd4\u8f83\u3002\u5728\u53cd\u9762\u6fc0\u52b1\u4e0b\uff0c\u9891\u8c31\u663e\u793a\u4e86n = 2\uff0c3\u548c4\u65f6\u7684\u884d\u5c04\u5cf0\u3002<\/p>\n

\uff08c\uff09\u5f53\uff08BA\uff092<\/sub>\uff08MA\uff09n\u22121<\/sub>Pbn<\/sub>I3n+1<\/sub>\u9499\u949b\u77ff\u53d6\u4e0d\u540cn\u503c\u65f6\u5e26\u9699\u80fd\u91cf\u7684\u6bd4\u8f83\u3002\u4e09\u79cd\u53ef\u80fd\u7684\u4f20\u8f93\u673a\u5236\uff1a\u7535\u5b50\u548c\u80fd\u91cf\u4ece\u5c0fn\u503c\u8f6c\u79fb\u5230\u5927n\u503c\uff0c\u7a7a\u7a74\u4f20\u8f93\u65f6\u4ece\u5927n\u503c\u5230\u5c0fn\u503c\u3002<\/p>\n

\u56fe\u4e8c\uff1a\u4ece\u6b63\u53cd\u9762\u6fc0\u52b1\u8584\u819c\u65f6\u7684TA\u5149\u8c31\u56fe\u548cPL\u4e0eTA\u7684\u6bd4\u8f83<\/strong><\/span><\/p>\n

\"\"<\/p>\n

\u672c\u56fe\u7ed9\u51fa\u4e86\uff08BA\uff092<\/sub>\uff08MA\uff09n\u22121<\/sub>Pbn<\/sub>I3n+1<\/sub>\u4e8c\u7ef4\u9499\u949b\u77ff\u8584\u819c\uff08\u539a\u5ea6\u7ea6\u4e3a358 nm\uff0cn\uff1d4\uff09\u5728\uff08a\uff09\u53cd\u9762\u6fc0\u52b1\u548c\uff08b\uff09\u6b63\u9762\u6fc0\u52b1\u5728\u4e0d\u540c\u5ef6\u8fdf\u65f6\u95f4\u5bf9\u5e94\u7684TA\u5149\u8c31\u3002\u8f7d\u4f53\u80fd\u5e26\u8fb9\u7f18\u5728572 nm\uff0c608nm\uff0c645 nm\u548c740 nm\u5904\u586b\u5145\u5f62\u6210\u5cf0\uff0c\u5206\u522b\u5bf9\u5e94n = 2\uff0c3\uff0c4\u548cn\u2248\u221e\u7684\u9499\u949b\u77ff\u76f8\u3002\u9ed1\u7bad\u5934\u6307\u793a\u5cf0\u6f14\u5316\u65b9\u5411\u3002<\/p>\n

\uff08c\uff09TA\u52a8\u529b\u5b66\u63a2\u8ba8\u4e86\u53cd\u9762\u6fc0\u52b1\u65f6n = 2\uff0c3\uff0c4\u548cN\u2248\u221e\u7684\u80fd\u5e26\u3002\u5728n\u2248\u221e\u65f6\u7f13\u6162\u4e0a\u5347\u7684\u52a8\u529b\u5b66\u53cd\u6620\u4e86\u8f7d\u6d41\u5b50\uff08\u7535\u5b50\uff09\u586b\u5145\u8fc7\u7a0b\u3002\u5b9e\u7ebf\u662f\u52a8\u529b\u5b66\u7684\u6307\u6570\u51fd\u6570\u62df\u5408\uff0c\u5f97\u5230\u8f7d\u4f53\u586b\u5145\u65f6\u95f4\u4e3a477 ps\u3002<\/p>\n

\uff08d\uff09\u5728n\u2248\u221e\u65f6\uff0c\u65f6\u95f4\u5206\u8fa8\u5149\u8c31PL\u548cTA\u52a8\u529b\u5b66\u5728\u524d\u4e24\u4e2a\u7eb3\u79d2\u6fc0\u53d1\u540e\u7684\u6bd4\u8f83\uff0c\u4e0a\u5347\u7684\u52a8\u529b\u5b66\u663e\u793a\u51fa\u660e\u663e\u7684\u5dee\u5f02\u3002\u5b9e\u7ebf\u4e3a\u7531IRF\u9650\u5236\u7684PL\u52a8\u529b\u5b66\u4e0e\u4e0a\u5347\u52a8\u529b\u5b66\u7684\u62df\u5408\u3002<\/p>\n

\u56fe\u4e09\uff1a\u8584\u819c\u5728\u6b63\u9762\u6fc0\u52b1\u540e\u7684TA\u5149\u8c31\u56fe<\/span><\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\uff08BA\uff092<\/sub>\uff08MA\uff09n\u22121<\/sub>Pbn<\/sub>I3n+1<\/sub>\u4e8c\u7ef4\u9499\u949b\u77ff\u8584\u819c\uff08n = 4\uff0c\u539a\u5ea6\u7ea6\u4e3a358 nm\uff09\u5728740 nm\u6b63\u9762\u6fc0\u52b1\u4e0b\u7684TA\u5149\u8c31\u3002\u5728608\u548c645 nm\u5904\u7684\u5cf0\u5206\u522b\u5bf9\u5e94n = 3\u548c4\u7684\u9499\u949b\u77ff\u76f8\u3002<\/p>\n

\uff08b\uff09\u5728n = 3\u548c4\u65f6\uff0c\u80fd\u5e26\u7684TA\u52a8\u529b\u5b66\u66f2\u7ebf\u663e\u793a\u51fa\u7a7a\u767d\u7684\u5f62\u6210\u8fc7\u7a0b\u662f\u7531\u4e8e\u7a7a\u7a74\u4eceN\u2248\u221e\u76f8\u7684\u8f6c\u79fb\u3002\u5b9e\u7ebf\u662f\u52a8\u529b\u5b66\u7684\u6307\u6570\u51fd\u6570\u62df\u5408\uff0c\u5f97\u5230\u7684\u7a7a\u7a74\u8f6c\u79fb\u65f6\u95f4\u5728192 ps\uff08\u5bf9\u5e94n = 4\uff09\u548c\u5728987 ps\uff08\u5bf9\u5e94n = 3\uff09\u3002<\/p>\n

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

\u4f7f\u7528\u9759\u6001\u548c\u77ac\u6001PL\u548cTA\u5149\u8c31\u53d1\u73b0\uff08BA\uff092<\/sub>\uff08MA\uff09n\u22121<\/sub>Pbn<\/sub>I3n+1<\/sub> \u4e8c\u7ef4\u9499\u949b\u77ff\u8584\u819c\u5305\u62ec\u6742\u5316\u9499\u949b\u77ff\u76f8\uff0c\u4ed6\u4eec\u7684\u987a\u5e8f\u5206\u5e03\u548c\u7531n\u503c\u8bf1\u5bfc\u53d1\u751f\u7684\u7535\u5b50\u8f6c\u79fb\u548c\u5728\u76f8\u53cd\u65b9\u5411\u53d1\u751f\u7684\u7a7a\u7a74\u8f6c\u79fb\u6709\u5173\u3002\u8fd9\u79cd\u81ea\u53d1\u6027\u7684\u5185\u90e8\u7535\u8377\u5206\u79bb\u53ef\u5bfc\u81f4\u7535\u5b50\u548c\u7a7a\u7a74\u5206\u522b\u7d2f\u79ef\u5728\u8584\u819c\u7684\u4e0a\u4e0b\u8868\u5c42\uff0c\u5c06\u6709\u52a9\u4e8e\u63d0\u9ad8\u5149\u751f\u7535\u8377\u7684\u754c\u9762\u63d0\u53d6\u6548\u7387\u3002\u8fd9\u4e00\u53d1\u73b0\u4e3a2D\u5c42\u72b6\u9499\u949b\u77ff\u8584\u819c\u5728\u592a\u9633\u80fd\u8f6c\u6362\u548c\u5149\u7535\u63a2\u6d4b\u7b49\u9886\u57df\u7684\u5e94\u7528\u94fa\u5e73\u4e86\u9053\u8def\u3002<\/p>\n

\u3010\u6587\u732e\u4fe1\u606f\u3011<\/strong><\/span><\/p>\n

\u6587\u732e\u94fe\u63a5<\/span>\uff1a<\/strong>Observation of Internal Photoinduced Electron and Hole Separation in Hybrid 2-Dimentional Perovskite Films<\/span> <\/a>\uff08JACS\uff0c2017\uff0cDOI\uff1a10.1021\/jacs.6b12581\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u7ec4 yuyuyu \u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u7f16\u8f91\u6574\u7406\u3002<\/p>\n

\u70b9\u8fd9\u91cc\u52a0\u5165\u6750\u6599\u4eba\u7684\u5927\u5bb6\u5ead<\/a><\/strong>\u3002\u53c2\u4e0e\u65b0\u80fd\u6e90\u8bdd\u9898\u8ba8\u8bba\u8bf7\u52a0\u5165\u201c\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u6750\u6599\u4ea4\u6d41\u7fa4 422065952\u201d<\/p>\n

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