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{"id":1879,"date":"2025-05-16T06:25:58","date_gmt":"2025-05-16T06:25:58","guid":{"rendered":"https:\/\/www.photoluminescentcn.com\/?p=1879"},"modified":"2025-05-16T06:25:58","modified_gmt":"2025-05-16T06:25:58","slug":"luminescence-principle-of-upconversion-luminescent-materials","status":"publish","type":"post","link":"https:\/\/www.photoluminescentcn.com\/zh\/luminescence-principle-of-upconversion-luminescent-materials\/","title":{"rendered":"\u4e0a\u8f6c\u6362\u53d1\u5149\u6750\u6599\u7684\u53d1\u5149\u539f\u7406"},"content":{"rendered":"

\u4e00\u3001\u00a0\u4ec0\u4e48\u662f\u4e0a\u8f6c\u6362\u53d1\u5149\uff1f
\n\u65af\u6258\u514b\u65af\uff08Stokes\uff09\u5b9a\u5f8b\u8ba4\u4e3a\u6750\u6599\u53ea\u80fd\u53d7\u5230\u9ad8\u80fd\u91cf\u7684\u5149\u6fc0\u53d1\uff0c\u53d1\u5c04\u51fa\u4f4e\u80fd\u91cf\u7684\u5149\uff0c\u5373\u7ecf\u6ce2\u957f\u77ed\u3001\u9891\u7387\u9ad8\u7684\u5149\u6fc0\u53d1\uff0c\u6750\u6599\u53d1\u5c04\u51fa\u6ce2\u957f\u957f\u3001\u9891\u7387\u4f4e\u7684\u5149\u3002\u800c\u4e0a\u8f6c\u5316\u53d1\u5149\u5219\u4e0e\u4e4b\u76f8\u53cd\uff0c\u4e0a\u8f6c\u6362\u53d1\u5149\u662f\u6307\u8fde\u7eed\u5438\u6536\u4e24\u4e2a\u6216\u8005\u591a\u4e2a\u5149\u5b50\uff0c\u5bfc\u81f4\u53d1\u5c04\u6ce2\u957f\u77ed\u4e8e\u6fc0\u53d1\u6ce2\u957f\u7684\u53d1\u5149\u7c7b\u578b\uff0c\u6211\u4eec\u4ea6\u79f0\u4e4b\u4e3a\u53cd\u65af\u6258\u514b\u65af\uff08Anti-Stokes\uff09\u3002<\/p>\n

\u4e0a\u8f6c\u6362\u53d1\u5149\u5728\u6709\u673a\u548c\u65e0\u673a\u6750\u6599\u4e2d\u5747\u6709\u6240\u4f53\u73b0\uff0c\u4f46\u5176\u539f\u7406\u4e0d\u540c\u3002
\n\u6709\u673a\u5206\u5b50\u5b9e\u73b0\u5149\u5b50\u4e0a\u8f6c\u6362\u7684\u673a\u7406\u662f\u80fd\u591f\u901a\u8fc7\u4e09\u91cd\u6001-\u4e09\u91cd\u6001\u6e6e\u706d(Triplet-triplet annihilation\uff0cTTA\uff09\uff0c\u5178\u578b\u7684\u6709\u673a\u5206\u5b50\u662f\u591a\u73af\u82b3\u70c3\uff08PAHs\uff09\u3002\u65e0\u673a\u6750\u6599\u4e2d\uff0c\u4e0a\u8f6c\u6362\u53d1\u5149\u4e3b\u8981\u53d1\u751f\u5728\u9567\u7cfb\u63ba\u6742\u7a00\u571f\u79bb\u5b50\u7684\u5316\u5408\u7269\u4e2d\uff0c\u4e3b\u8981\u6709NaYF4\u3001NaGdF4\u3001LiYF4\u3001YF3\u3001CaF2\u7b49\u6c1f\u5316\u7269\u6216Gd2O3\u7b49\u6c27\u5316\u7269\u7684\u7eb3\u7c73\u6676\u4f53\u3002NaYF4\u662f\u4e0a\u8f6c\u6362\u53d1\u5149\u6750\u6599\u4e2d\u7684\u5178\u578b\u57fa\u8d28\u6750\u6599\uff0c\u6bd4\u5982NaYF4:Er,Yb\uff0c\u5373\u9571\u94d2\u53cc\u63ba\u65f6\uff0cEr\u505a\u6fc0\u6d3b\u5242\uff0cYb\u4f5c\u4e3a\u654f\u5316\u5242\u3002\u672c\u5e94\u7528\u6587\u7ae0\u6211\u4eec\u7740\u91cd\u8bb2\u8bb2\u7a00\u571f\u63ba\u6742\u4e0a\u8f6c\u6362\u53d1\u5149\u6750\u6599\uff08Upconversion\u00a0nanoparticles,UCNPs\uff09\u3002<\/p>\n

\u4e8c\u3001\u00a0\u9567\u7cfb\u63ba\u6742\u7a00\u571f\u4e0a\u8f6c\u6362\u53d1\u5149\u7684\u53d1\u5149\u539f\u7406
\n\u65e0\u673a\u6750\u6599\u6709\u4e09\u4e2a\u57fa\u672c\u53d1\u5149\u539f\u7406\uff1a\u6fc0\u53d1\u6001\u5438\u6536(Excited-state absorption, ESA)\uff0c\u80fd\u91cf\u4f20\u9012\u4e0a\u8f6c\u6362(Energy transfer upconversion, ETU)\u548c\u5149\u5b50\u96ea\u5d29(Photon avalanche, PA)\u3002<\/p>\n

(a)\u00a0\u6fc0\u53d1\u6001\u5438\u6536
\n\u6fc0\u53d1\u6001\u5438\u6536\u8fc7\u7a0b(ESA)\u662f\u57281959\u5e74\u7531Bloembergen\u7b49\u4eba\u63d0\u51fa\uff0c\u5176\u539f\u7406\u662f\u540c\u4e00\u4e2a\u79bb\u5b50\u4ece\u57fa\u6001\u901a\u8fc7\u8fde\u7eed\u591a\u5149\u5b50\u5438\u6536\u5230\u8fbe\u80fd\u91cf\u8f83\u9ad8\u7684\u6fc0\u53d1\u6001\u7684\u8fc7\u7a0b\uff0c\u8fd9\u662f\u4e0a\u8f6c\u6362\u53d1\u5149*\u57fa\u672c\u7684\u53d1\u5149\u8fc7\u7a0b\u3002\u5982Figure 3(a)\u540c\u4e00\u7a00\u571f\u79bb\u5b50\u4ece\u57fa\u6001\u80fd\u7ea7\u901a\u8fc7\u8fde\u7eed\u7684\u53cc\u5149\u5b50\u6216\u8005\u591a\u5149\u5b50\u5438\u6536\uff0c\u8dc3\u8fc1\u5230\u6fc0\u53d1\u6001\u80fd\u7ea7\uff0c\u7136\u540e\u5c06\u80fd\u91cf\u4ee5\u5149\u8f90\u5c04\u7684\u5f62\u5f0f\u91ca\u653e\u4f1a\u5230\u57fa\u6001\u80fd\u7ea7\u7684\u8fc7\u7a0b\u3002
\n(b)\u00a0\u80fd\u91cf\u4f20\u9012\u4e0a\u8f6c\u6362
\n\u80fd\u91cf\u4f20\u9012\u662f\u6307\u901a\u8fc7\u975e\u8f90\u5c04\u8fc7\u7a0b\u5c06\u4e24\u4e2a\u80fd\u91cf\u76f8\u8fd1\u7684\u6fc0\u53d1\u6001\u79bb\u5b50\u901a\u8fc7\u975e\u8f90\u5c04\u8026\u5408\uff0c\u5176\u4e2d\u4e00\u4e2a\u628a\u80fd\u91cf\u8f6c\u79fb\u7ed9\u53e6\u4e00\u4e2a\u56de\u5230\u4f4e\u80fd\u6001\uff0c\u53e6\u4e00\u4e2a\u79bb\u5b50\u63a5\u53d7\u80fd\u91cf\u800c\u8dc3\u8fc1\u5230\u66f4\u9ad8\u7684\u80fd\u6001\u3002\u80fd\u91cf\u4f20\u9012\u4e0a\u8f6c\u6362\u53ef\u4ee5\u53d1\u751f\u5728\u540c\u79cd\u79bb\u5b50\u4e4b\u95f4\uff0c\u4e5f\u53ef\u4ee5\u53d1\u751f\u5728\u4e0d\u540c\u7684\u79bb\u5b50\u4e4b\u95f4\u3002\u80fd\u91cf\u4f20\u9012\u5305\u542b\u4e86\u8fde\u7eed\u80fd\u91cf\u4f20\u9012\uff08Successive Energy Transfer\uff0cSET\uff09\u3001\u5408\u4f5c\u4e0a\u8f6c\u6362\uff08Cooperative Upconversion\uff0cCU\uff09\u548c\u4ea4\u53c9\u5f1b\u8c6b\uff08Cross Relaxation\uff0cCR\uff09\u4e09\u7c7b\u30021
\nigure 4.\u80fd\u91cf\u4f20\u9012\u4e0a\u8f6c\u6362\u7684\u4e09\u79cd\u7c7b\u578b
\n(c)\u00a0\u5149\u5b50\u96ea\u5d29
\n\u201c\u5149\u5b50\u96ea\u5d29\u201d\u7684\u4e0a\u8f6c\u6362\u53d1\u5149\u662f1979\u5e74Chivian\u7b49\u4eba\u5728\u7814\u7a76Lacl3\u6676\u4f53\u4e2d\u7684Pr3+\u65f6\u9996\u6b21\u53d1\u73b0\u7684\uff0c\u7531\u4e8e\u5b83\u53ef\u4ee5\u4f5c\u4e3a\u4e0a\u8f6c\u6362\u6fc0\u5149\u5668\u7684\u6fc0\u53d1\u673a\u5236\u800c\u5f15\u8d77\u4e86\u4eba\u4eec\u7684\u5e7f\u6cdb\u5173\u6ce8\u3002\u8be5\u673a\u5236\u7684\u57fa\u7840\u662f\uff1a\u4e00\u4e2a\u80fd\u7ea7\u4e0a\u7684\u7c92\u5b50\u901a\u8fc7\u4ea4\u53c9\u5f1b\u8c6b\u5728\u53e6\u4e00\u4e2a\u80fd\u7ea7\u4e0a\u4ea7\u751f\u91cf\u5b50\u6548\u7387\u5927\u4e8e1 \u7684\u62bd\u8fd0\u6548\u679c\u3002\u201c\u5149\u5b50\u96ea\u5d29\u201d\u8fc7\u7a0b\u662f\u6fc0\u53d1\u6001\u5438\u6536\u548c\u80fd\u91cf\u4f20\u9012\u76f8\u7ed3\u5408\u7684\u8fc7\u7a0b\uff0c\u53ea\u662f\u80fd\u91cf\u4f20\u8f93\u53d1\u751f\u5728\u540c\u79cd\u79bb\u5b50\u4e4b\u95f4\u3002<\/p>","protected":false},"excerpt":{"rendered":"

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