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\u3010\u80cc\u666f\u4ecb\u7ecd\u3011<\/strong><\/p>\n

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\u7b2c\u4e8c\u8fd1\u7ea2\u5916\u7a97\u53e3\uff08NIR-II\uff0c900-1700 nm\uff09\u8367\u5149\u7531\u4e8e\u6d3b\u4f53\u7ec4\u7ec7\u5bf9\u5176\u5149\u5b50\u7684\u5438\u6536\u548c\u6563\u5c04\u6548\u5e94\u5927\u5927\u964d\u4f4e\uff0c\u5728\u751f\u7269\u533b\u5b66\u6210\u50cf\u548c\u8fd1\u7ea2\u5916LED\u7b49\u65b9\u9762\u5f97\u5230\u4e86\u5e7f\u6cdb\u7684\u7814\u7a76\u3002Ag\u57fa\u91cf\u5b50\u70b9\uff08Ag2<\/sub>S\u548cAg2<\/sub>Se\uff09\u662f\u5178\u578b\u7684\u4e0d\u542b\u6709\u6bd2\u6027\u91cd\u91d1\u5c5e\u5143\u7d20\u7684NIR-II\u8367\u5149\u63a2\u9488\u3002\u4ee5Ag2<\/sub>Se\u4e3a\u4f8b\uff0c\u5b83\u5177\u6709\u7a84\u7684\u76f4\u63a5\u5e26\u9699\uff080.15 eV\uff09\uff0c\u662f\u4e00\u79cd\u7406\u60f3\u7684NIR-II\u8367\u5149\u6750\u6599\u3002\u7136\u800c\uff0c Ag2<\/sub>Se\u4e2dAg\u79bb\u5b50\u7684\u9ad8\u8fc1\u79fb\u7387\u5bfc\u81f4\u5927\u91cf\u7684\u9633\u79bb\u5b50\u7a7a\u4f4d\u548c\u6676\u4f53\u7f3a\u9677\uff0c\u5bfc\u81f4Ag2<\/sub>Se\u91cf\u5b50\u70b9\u7684\u91cf\u5b50\u6548\u7387\u964d\u4f4e\u3002\u56e0\u6b64\uff0c\u5f00\u53d1\u4e00\u79cd\u65b0\u7684\u7b56\u7565\u63d0\u9ad8Ag\u57fa\u91cf\u5b50\u70b9\u7684\u91cf\u5b50\u6548\u7387\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u4e2d\u79d1\u9662\u82cf\u5dde\u7eb3\u7c73\u6280\u672f\u4e0e\u7eb3\u7c73\u4eff\u751f\u7814\u7a76\u6240\u738b\u5f3a\u658c\u7814\u7a76\u5458\u548c\u798f\u5efa\u7269\u8d28\u7ed3\u6784\u7814\u7a76\u6240\u9648\u5b66\u5143\u7814\u7a76\u5458\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u5408\u4f5c\uff0c\u9996\u6b21\u91c7\u7528\u5408\u91d1\u5316\u7684\u65b9\u6cd5\u5408\u6210\u4e86\u94f6\u91d1\u7852\uff08AgAuSe\uff09\u91cf\u5b50\u70b9\u3002\u8be5\u91cf\u5b50\u70b9\u53d1\u5c04\u5cf0\u4f4d\u4e8e978 nm\uff0c\u5176\u7edd\u5bf9\u91cf\u5b50\u6548\u7387\u4e3a65.3%\uff08\u4e3a\u76ee\u524d\u62a5\u9053\u7684\u4e0d\u542b\u6bd2\u6027\u91cd\u91d1\u5c5e\u7684NIR-II\u91cf\u5b50\u70b9\u91cf\u5b50\u6548\u7387\u7684\u8bb0\u5f55\uff09\uff0c\u53d1\u5c04\u534a\u5cf0\u5bbd\u4e3a90 nm\uff0c\u5bff\u547d\u4e3a4.58 \u03bcs\u3002\u7ed3\u5408\u53d8\u6e29\u5149\u8c31\uff0c\u7814\u7a76\u8868\u660e\u8be5\u91cf\u5b50\u70b9\u91cf\u5b50\u6548\u7387\u589e\u5f3a\u7684\u4e3b\u8981\u539f\u56e0\u5728\u4e8e\u975e\u8f90\u5c04\u8dc3\u8fc1\u7684\u6709\u6548\u6291\u5236\u3002\u8fdb\u4e00\u6b65\u901a\u8fc7\u77ac\u6001\u5438\u6536\u5149\u8c31\uff0c\u8868\u5f81\u4e86\u5176\u6fc0\u5b50\u52a8\u529b\u5b66\u8fc7\u7a0b\u3002\u8fd9\u79cd\u5408\u91d1\u5316\u7b56\u7565\u5bf9\u4e0d\u540c\u5c3a\u5bf8\u7684Ag2<\/sub>Se\u91cf\u5b50\u70b9\u5177\u6709\u666e\u9002\u6027\uff0c\u53ef\u4ee5\u5728820-1170 nm\u8303\u56f4\u5185\u8c03\u8282AgAuSe\u91cf\u5b50\u70b9\u7684\u8367\u5149\u53d1\u5c04\u5149\u8c31\u3002\u8fd9\u79cd\u5177\u6709\u65e0\u6bd2\u91cd\u91d1\u5c5e\u5143\u7d20\u3001\u9ad8\u91cf\u5b50\u6548\u7387\u7684\u91cf\u5b50\u70b9\u5728\u751f\u7269\u6210\u50cf\u3001\u53d1\u5149\u4e8c\u6781\u7ba1\u548c\u5149\u4f0f\u5668\u4ef6\u4e2d\u8868\u73b0\u51fa\u5de8\u5927\u7684\u5e94\u7528\u6f5c\u529b\u3002\u7814\u7a76\u6210\u679c\u4ee5\u9898\u4e3a\u201cColloidal Alloyed Quantum Dots with Enhanced Photoluminescence Quantum Yield in the NIR-II Window\u201d<\/strong>\u53d1\u5e03\u5728\u56fd\u9645\u8457\u540d\u671f\u520a J. Am. Chem. Soc.<\/strong>\u4e0a\u3002<\/p>\n

\"\"<\/p>\n

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

\u56fe\u4e00\u30014.58 nm Ag2<\/sub>Se\u548c4.37 nm\u5408\u91d1AgAuSe QDs\u7684\u8868\u5f81<\/strong>
\n \"\"\uff08A-B\uff09Ag2<\/sub>Se\u548cAgAuSe QDs\u7684TEM\u56fe\u50cf\uff1b<\/p>\n

\uff08C-D\uff09AgAuSe QDs\u7684AC-HAADF-STEM\u56fe\u50cf\u3001\u76f8\u5e94\u7684EDS\u6620\u5c04\u548cEDS\u7ed3\u679c\uff1b<\/p>\n

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\uff08H\uff09\u53d1\u5c04\u6ce2\u957f\u4e3a978 nm\u7684AgAuSe QDs\u7684\u7edd\u5bf9\u91cf\u5b50\u6548\u7387\uff1b<\/p>\n

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\u56fe\u4e8c\u30014.37 nm\u5408\u91d1\u5316AgAuSe QDs\u7684\u6e29\u5ea6\u76f8\u5173\u7684PL\u5149\u8c31\u548c\u98de\u79d2\u77ac\u6001\u5438\u6536\u7ed3\u679c<\/strong>
\n \"\"\uff08A\uff09\u6e29\u5ea6\u76f8\u5173\u7684PL\u5149\u8c31\uff1b<\/p>\n

\uff08B\uff09PL\u53d1\u5c04\u5f3a\u5ea6\u4e0e\u53cd\u5411\u6e29\u5ea6\u7684\u5173\u7cfb\uff1b<\/p>\n

\uff08C\uff09\u6e29\u5ea6\u76f8\u5173\u7684PL\u5cf0\u503c\u80fd\u91cf\u548cfwhm\u3002<\/p>\n

\uff08D\uff09\u62bd\u8fd0\u6ce2\u957f\u4e3a400 nm\u7684\u77ac\u6001\u5438\u6536\u5149\u8c31\u76842D\u4f2a\u5f69\u8272\u56fe\uff1b<\/p>\n

\uff08E\uff090 ps-1.5 ns\u7684\u8303\u56f4\u7684\u77ac\u6001\u5438\u6536\u5149\u8c31\uff1b<\/p>\n

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\u56fe\u4e09\u3001Au\u4e0e4.58 nm Ag2<\/sub>Se QDs\u5408\u91d1\u5316\u540e\u7684\u7ed3\u6784\u548cPL\u8f6c\u53d8<\/strong>
\n \"\"\uff08A\uff094.37 nm\u5408\u91d1\u5316AgAuSe QDs\u7684\u7ed3\u6784\u6f14\u53d8\u793a\u610f\u56fe\uff1b<\/p>\n

\uff08B-D\uff094.58 nm Ag2<\/sub>S QDs\u4e0e0\uff05\u300110\uff05\u548c50\uff05Au\u5408\u91d1\u5316\u540e\u7684TEM\u56fe\u50cf\uff1b<\/p>\n

\uff08E\uff09\u76f8\u5e94\u7684\u7c89\u672bXRD\u7ed3\u679c\uff1b<\/p>\n

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\n \"\"\uff08A\uff093.66 nm AgAuSe QDs\u7684TEM\u56fe\u50cf\uff1b<\/p>\n

\uff08B-C\uff09\u5206\u6563\u5728\u73af\u5df1\u70f7\u4e2d\u76843.84 nm Ag2<\/sub>Se\u548c3.66 nm AgAuSe QDs\u7684\u5ba4\u6e29PL\u5149\u8c31\u548cUV-vis-NIR\u5438\u6536\u5149\u8c31\uff1b<\/p>\n

\uff08D\uff096.07 nm AgAuSe QDs\u7684TEM\u56fe\u50cf\uff1b<\/p>\n

\uff08E-F\uff09\u5206\u6563\u5728\u73af\u5df1\u70f7\u4e2d\u76846.20 nm Ag2<\/sub>Se\u548c6.07 nm AgAuSe QDs\u7684\u5ba4\u6e29PL\u5149\u8c31\u548cUV-vis-NIR\u5438\u6536\u5149\u8c31\u3002<\/p>\n

\u56fe\u4e94\u3001AgAuSe QDs\u7684\u8367\u5149\u6027\u8d28<\/strong>
\n \"\"\uff08A-B\uff091050 nm Ag2<\/sub>S QDs\u548c1060 nm AgAuSe QDs\u7684PL\u5149\u8c31\u548c\u5f52\u4e00\u5316PL\u5149\u8c31\uff1b<\/p>\n

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\uff08E-F\uff09\u5728808 nm\u6fc0\u5149\u4ee5200 mW cm-2<\/sup>\u7684\u6fc0\u5149\u529f\u7387\u7167\u5c04120 min\u540e\uff0c\u5408\u91d1\u5316AgAuSe QDs\u6eb6\u6db2\u548c\u56fa\u6001\u819c\u7684\u5149\u7a33\u5b9a\u6027\u3002<\/p>\n

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\u6587\u732e\u94fe\u63a5\uff1aColloidal Alloyed Quantum Dots with Enhanced Photoluminescence Quantum Yield in the NIR-II Window<\/a><\/strong>.\uff08J. Am. Chem. Soc.<\/em>, 2021<\/strong>, DOI: 10.1021\/jacs.0c13071\uff09<\/p>\n

\u901a\u8baf\u4f5c\u8005\u7b80\u4ecb<\/strong>
\n \"\"<\/p>\n

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\u672c\u6587\u7531CQR\u7f16\u8bd1\u3002<\/p>\n

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