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\u5168\u6587\u901f\u89c8<\/strong><\/p>\n

\u901a\u8fc7\u5f15\u5165\u4e0d\u540c\u4ecb\u7535\u5e38\u6570\u7684\u6709\u673a\u9633\u79bb\u5b50\uff0c\u53ef\u4ee5\u6709\u6548\u6539\u53d8\u4e8c\u7ef4\u9499\u949b\u77ff\u7684\u6fc0\u5b50\u7ed3\u5408\u80fd\uff0c\u5b9e\u73b0\u4e8c\u7ef4\u9499\u949b\u77ff\u81ea\u65cb\u6781\u5316\u5bff\u547d\u7684\u8c03\u63a7\u3002\u5229\u7528\u77ac\u6001\u5706\u504f\u632f\u53cd\u5c04\u5149\u8c31\uff08Transient Circular Polarization Spectroscopy\uff09\u8ffd\u8e2a\u53cc\u6fc0\u5b50\u4fe1\u53f7\u7684\u53d8\u5316\u89c4\u5f8b\uff0c\u8fdb\u800c\u63d0\u53d6\u5149\u751f\u8f7d\u6d41\u5b50\u7684\u81ea\u65cb\u6781\u5316\u5bff\u547d\u3002\u5f53\u6fc0\u5b50\u7ed3\u5408\u6838\u80fd\uff08EOA2<\/sub>PbI4<\/sub>\uff09\u4e3a46 meV\u65f6\uff0c\u81ea\u65cb\u6781\u5316\u5bff\u547d\u53ef\u8fbe26ps\u3002\u8fdb\u4e00\u6b65\u7814\u7a76\u53d1\u73b0\u6fc0\u5b50\u6d53\u5ea6\u662f\u5f71\u54cd\u6fc0\u5b50\u81ea\u65cb\u5f1b\u8c6b\u7684\u91cd\u8981\u56e0\u6570\u3002\u57fa\u4e8e\u5149\u8c31\u5206\u6790\u7ed3\u679c\uff0c\u4f4e\u6fc0\u5b50\u6d53\u5ea6\u6761\u4ef6\u4e0b\uff0c\u4e8c\u7ef4\u9499\u949b\u77ff\u7684\u81ea\u65cb\u5f1b\u8c6b\u884c\u4e3a\u7531D\u2019yakonov-Perel (DP) \u673a\u5236\u8d77\u4e3b\u5bfc\u4f5c\u7528\uff1b\u9ad8\u6fc0\u5b50\u6d53\u5ea6\u6761\u4ef6\u4e3aBir\u2013Aronov\u2013Pikus (BAP) \u673a\u5236\u3002<\/p>\n

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

\u4e8c\u7ef4\u91d1\u5c5e\u5364\u5316\u7269\u9499\u949b\u77ff\u5177\u6709\u4f18\u5f02\u7684\u5149\u5438\u6536\u7279\u6027\uff0c\u9ad8\u8367\u5149\u91cf\u5b50\u4ea7\u7387\uff08PLQY\uff09\u548c\u6613\u4e8e\u5316\u5b66\u6539\u6027\uff0c\u5728\u592a\u9633\u80fd\u7535\u6c60\uff0cLED\uff0c\u6fc0\u5149\u548c\u5149\u50ac\u5316\u7b49\u9886\u57df\u5177\u6709\u5f88\u597d\u7684\u5e94\u7528\u524d\u666f\u3002\u7531\u4e8e\u5f3a\u70c8\u7684\u81ea\u65cb\u8f68\u9053\u8026\u5408\u4f5c\u7528\uff08SOC\uff09\u548c\u7ed3\u6784\u5bf9\u79f0\u6027\u7684\u7f3a\u5931\uff0c\u4f7f\u4e8c\u7ef4\u9499\u949b\u77ff\u7684\u80fd\u7ea7\u53d1\u751f\u5288\u88c2\uff08\u4f8b\u5982Rashba-effect\uff09\uff0c\u662f\u7814\u7a76\u5ba4\u6e29\u4f4e\u7ef4\u534a\u5bfc\u4f53\u81ea\u65cb\u6781\u5316\u8fc7\u7a0b\u7684\u7406\u60f3\u5bf9\u8c61\u3002<\/p>\n

\u4e8c\u7ef4\u9499\u949b\u77ff\u901a\u5e38\u5177\u6709Ruddlesden-Popper\u7ed3\u6784\uff0c\u5373\u65e0\u673a\u5c42PbI6<\/sub>\u516b\u9762\u4f53\u501f\u52a9\u6709\u673a\u94f5\u9633\u79bb\u5b50\u6709\u673a\u7269\u901a\u8fc7\u9876\u89d2\u8fde\u63a5\uff08\u89c1\u56fe1a-b\uff09\u3002\u65e0\u673a\u5c42\u548c\u6709\u673a\u5c42\u4e4b\u95f4\u4ecb\u7535\u5e38\u6570\u7684\u4e0d\u5339\u914d\uff0c\u4f7f\u5149\u6fc0\u53d1\u4ea7\u751f\u7684\u6fc0\u5b50\u5c40\u57df\u5728\u65e0\u673a\u5c42\u4e2d\uff0c\u5bfc\u81f4\u5176\u6fc0\u5b50\u7ed3\u5408\u80fd\u901a\u5e38\u5728\u767e\u6beb\u7535\u5b50\u4f0f\u7279\u7684\u7ea7\u522b\u3002\u4f8b\u5982\uff0c\u7528\u975e\u6781\u6027\u7684\u6709\u673a\u7269\u914d\u4f53\uff08BA\u4e01\u80fa\uff09\u7684BA2<\/sub>PBI4<\/sub>\u7684\u6fc0\u5b50\u96c6\u5408\u80fd\u4e3a482meV\u3002\u800c\u5f53\u91c7\u7528\u5177\u6709\u8f83\u5927\u4ecb\u7535\u5e38\u6570\uff08\u03b5r<\/sub>=37.2\uff09\u7684\u4e59\u9187\u80fa\uff08EOA\uff09\u6709\u673a\u914d\u4f53\uff0c\u5176\u6fc0\u5b50\u7ed3\u5408\u53ef\u4ee5\u964d\u4f4e\u523046meV\u3002\u8f83\u4f4e\u7684\u7ed3\u5408\u80fd\u53ef\u4ee5\u6709\u6548\u5c4f\u853d\u6676\u683c\u5bf9\u5149\u751f\u6fc0\u5b50\u675f\u7f1a\uff0c\u8fdb\u800c\u63d0\u9ad8\u8f7d\u6d41\u5b50\u7684\u81ea\u65cb\u6781\u5316\u5bff\u547d\u3002\u56e0\u6b64\u501f\u52a9\u914d\u4f53\u5de5\u7a0b\u5f15\u5165\u5177\u6709\u4e0d\u540c\u4ecb\u7535\u5e38\u6570\u7684\u6709\u673a\u914d\u4f53\u6765\u8c03\u63a7\u4e8c\u7ef4\u9499\u949b\u77ff\u81ea\u65cb\u6781\u5316\u5bff\u547d\uff0c\u5bf9\u7814\u7a76\u8be5\u7c7b\u4f4e\u7ef4\u534a\u5bfc\u4f53\u6750\u6599\u7684\u81ea\u65cb\u5f1b\u8c6b\u7684\u7269\u7406\u673a\u5236\u5177\u6709\u79ef\u6781\u7684\u610f\u4e49\u3002<\/p>\n

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

\u57fa\u4e8e\u6b64\u7b56\u7565\uff0c\u5357\u65b9\u79d1\u6280\u5927\u5b66\u673a\u68b0\u4e0e\u80fd\u6e90\u5de5\u7a0b\u7cfb\u9648\u71b9\u7ff0\u52a9\u7406\u6559\u6388\uff0c\u7f8e\u56fd\u56fd\u5bb6\u53ef\u518d\u751f\u80fd\u6e90\u5b9e\u9a8c\u5ba4\u7684<\/strong>Matthew C. Beard \u9ad8\u7ea7\u7814\u7a76\u5458\u8054\u5408\u9999\u6e2f\u79d1\u6280\u5927\u5b66\u5316\u5b66\u7cfb\u5415\u6d77\u9e4f\u52a9\u7406\u6559\u6388\u548c\u53a6\u95e8\u5927\u5b66\u5316\u5b66\u7cfb\u738b\u5eb7\u535a\u58eb\u56e2\u961f<\/strong>\u901a\u8fc7\u914d\u4f53\u5de5\u7a0b\u5408\u6210\u4e00\u7cfb\u5217\u4e0d\u540c\u6709\u673a\u914d\u4f53\u7684\u4e8c\u7ef4\u9499\u949b\u77ff\u5355\u6676\uff08\u56fe1\uff09\uff0c\u5e76\u5229\u7528\u8d85\u5feb\u5149\u8c31\u6280\u672f\u7814\u7a76\u4e8c\u7ef4\u9499\u949b\u77ff\u5355\u6676\u5149\u751f\u6fc0\u5b50\u7684\u81ea\u65cb\u6781\u5316\u5bff\u547d\u548c\u5f1b\u8c6b\u673a\u5236\u3002<\/p>\n

\u5982\u56fe1\uff0c\u914d\u4f53\u4ecb\u7535\u5e38\u6570\u589e\u5927\u5bfc\u81f4\u6fc0\u5b50\u7ed3\u5408\u80fd\u7684\u5927\u5e45\u4e0b\u964d\u3002\u5c06\u77ac\u6001\u53cd\u5c04\u4fe1\u53f7\u901a\u8fc7Kramer-Kronig\u53d8\u5316\u5f97\u5230\u5bf9\u5e94\u77ac\u6001\u5438\u6536\u5149\u8c31\uff0c\u5149\u8c31\u5f62\u72b6\u548c\u4f4d\u7f6e\u8868\u660e\u6f02\u767d\u4fe1\u53f7\u7684\u4ea7\u751f\u4e3b\u8981\u6765\u6e90\u4e8e\u81ea\u7531\u8f7d\u6d41\u5b50\u7684\u8c61\u7a7a\u95f4\u586b\u5145\u6216\u8005\u6fc0\u5b50\u5360\u636e\u5e26\u6765\u7684\u6001\u586b\u5145\u3002\u7531\u4e8e\u6f02\u767d\u4fe1\u53f7\u5305\u542b\u81ea\u7531\u8f7d\u6d41\u5b50\u548c\u6fc0\u5b50\u7684\u5171\u540c\u8d21\u732e\uff0c\u56e0\u4e3a\u91c7\u7528\u53cc\u6fc0\u5b50\u4fe1\u53f7\u6765\u4ee3\u8868\u81ea\u65cb\u6781\u5316\u548c\u5f1b\u8c6b\u8fc7\u7a0b\u3002\u6d4b\u8bd5\u65b9\u6cd5\u5982\u56fe2a-2b\u6240\u793a\u3002\u901a\u8fc7\u8d85\u5feb\u5706\u504f\u632f\u5149\u8c31\u9009\u62e9\u6027\u6fc0\u53d1\u5355\u79cd\u7eaf\u81ea\u65cb\u6001\u5e76\u76d1\u63a7\u53cc\u57fa\u5b50\u7684\u81ea\u65cb\u5f1b\u8c6b\u65f6\u95f4\u53d1\u73b0EOA\u81ea\u65cb\u6781\u5316\u5bff\u547d\u76f8\u6bd4\u4e8eBA\u5927\u5927\u5ef6\u957f\uff0c\u53ef\u8fbe\u523026ps\uff08\u56fe2\uff09\u3002\u5728\u6b64\u57fa\u7840\u4e0a\u901a\u8fc7\u6539\u53d8\u6e29\u5ea6\u53ca\u8f7d\u6d41\u5b50\u6d53\u5ea6\uff0c\u53d1\u73b0\u6e29\u5ea6\u5bf9\u4e8e\u81ea\u65cb\u5f1b\u8c6b\u5f71\u54cd\u6bd4\u8f83\u5c0f\uff0c\u800c\u8f7d\u6d41\u5b50\u6d53\u5ea6\u5347\u9ad8\u4f1a\u964d\u4f4e\u81ea\u65cb\u6781\u5316\u5bff\u547d\u3002\uff08\u56fe3\uff09\u901a\u8fc7\u4ee5\u4e0a\u7814\u7a76\uff0c\u63a8\u65ad\u4f4e\u6d53\u5ea6\u4e0b\uff0c\u4e8c\u7ef4\u9499\u949b\u77ff\u4e2dD\u2019yakonov-Perel (DP) \u673a\u5236\u8d77\u4e3b\u5bfc\u4f5c\u7528\uff1b\u9ad8\u6fc0\u5b50\u6d53\u5ea6\u6761\u4ef6\u4e3aBir\u2013Aronov\u2013Pikus (BAP) \u673a\u5236\uff0c\u53ef\u901a\u8fc7\u8c03\u63a7\u6fc0\u5b50\u7ed3\u5408\u80fd\u8c03\u63a7\u81ea\u65cb\u5bff\u547d\uff08\u56fe4\uff09\u3002<\/p>\n

\"\"<\/p>\n

\u56fe1 BA\u548cEOA\u4e8c\u7ef4\u9499\u949b\u77ff\u5355\u6676\u7684\u7ed3\u6784\u793a\u610f\u56fe\u548c\u7a33\u6001\u5438\u6536\u5149\u8c31\u3002<\/p>\n

\"\"<\/p>\n

\u56fe2 \u81ea\u65cb\u5f1b\u8c6b\u52a8\u529b\u5b66\u6d4b\u8bd5\u793a\u610f\u56fe\u548c\u4ee3\u8868\u6027\u7684TR\u8c31\u56fe\u548c\u81ea\u65cb\u5f1b\u8c6b\u52a8\u529b\u5b66\u3002<\/p>\n

\"\"<\/p>\n

\u56fe3 \u6e29\u5ea6\u548c\u6fc0\u5b50\u6d53\u5ea6\u4f9d\u8d56\u7684\u81ea\u65cb\u5f1b\u8c6b\u5bff\u547d\u3002<\/p>\n

\"\"<\/p>\n

\u56fe4 \u4e8c\u7ef4\u9499\u949b\u77ff\u5355\u6676\u81ea\u65cb\u6781\u5316\u5f1b\u8c6b\u673a\u5236\u3002\u4f4e\u6fc0\u5b50\u6d53\u5ea6\u6761\u4ef6\uff0cDP\u673a\u5236\u8d77\u4e3b\u5bfc\u4f5c\u7528\uff1b\u9ad8\u6fc0\u5b50\u6d53\u5ea6\u6761\u4ef6\uff0cBAP\u4e3a\u4e3b\u5bfc\u673a\u5236\u3002<\/p>\n

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

\u672c\u6587\u5229\u7528\u5177\u6709\u65f6\u95f4\u5206\u8fa8\u548c\u504f\u632f\u5206\u8fa8\u7684\u77ac\u6001\u53cd\u5c04\u5149\u8c31\u7cfb\u7edf\u7814\u7a76\u4e86\u7814\u7a76\u91d1\u5c5e\u5364\u5316\u7269\u534a\u5bfc\u4f53\u7684\u5149\u751f\u6fc0\u5b50\u5bf9\u6fc0\u5b50\u7ed3\u5408\u80fd\uff0c\u6676\u683c\u6e29\u5ea6\u548c\u6fc0\u5b50\u6d53\u5ea6\u4e4b\u95f4\u7684\u975e\u7ebf\u6027\u54cd\u5e94\u3002\u7814\u7a76\u53d1\u73b0\u8be5\u7c7b\u534a\u5bfc\u4f53\u7684\u81ea\u65cb\u6781\u5316\u5bff\u547d\u540c\u6fc0\u5b50\u7ed3\u5408\u80fd\u5448\u5e73\u65b9\u5173\u7cfb\u3002\u901a\u8fc7\u8c03\u63a7\u6fc0\u5b50\u6d53\u5ea6\u548c\u6e29\u5ea6\u4f9d\u8d56\u5b9e\u9a8c\uff0c\u6df1\u5165\u63a2\u8ba8\u4e8c\u7ef4\u9499\u949b\u77ff\u5355\u6676\u7684\u81ea\u65cb\u6781\u5316\u52a8\u529b\u5b66\u548c\u5f1b\u8c6b\u673a\u5236\uff0c\u53d1\u73b0\u4f4e\u6fc0\u5b50\u6d53\u5ea6\u6761\u4ef6\uff0cDP\u673a\u5236\u8d77\u4e3b\u5bfc\u4f5c\u7528\uff1b\u9ad8\u6fc0\u5b50\u6d53\u5ea6\u6761\u4ef6\uff0cBAP\u4e3a\u4e3b\u5bfc\u673a\u5236\u3002<\/p>\n

\u5357\u65b9\u79d1\u6280\u5927\u5b66\u673a\u68b0\u4e0e\u80fd\u6e90\u5de5\u7a0b\u7cfb\u9648\u71b9\u7ff0\u52a9\u7406\u6559\u6388\u4e3a\u8be5\u8bba\u6587\u7b2c\u4e00\u53ca\u901a\u8baf\u4f5c\u8005\uff0c\u9999\u6e2f\u79d1\u6280\u5927\u5b66\u5316\u5b66\u7cfb\u5415\u6d77\u9e4f\u52a9\u7406\u6559\u6388\u548c\u53a6\u95e8\u5927\u5b66\u5316\u5b66\u7cfb\u738b\u5eb7\u535a\u58eb\u4e3a\u8be5\u8bba\u6587\u5171\u540c\u7b2c\u4e00\u4f5c\u8005\uff0c\u7f8e\u56fd\u56fd\u5bb6\u53ef\u518d\u751f\u80fd\u6e90\u5b9e\u9a8c\u5ba4\u7684Matthew C. Beard \u9ad8\u7ea7\u7814\u7a76\u5458\u4e3a\u8be5\u8bba\u6587\u7684\u901a\u8baf\u4f5c\u8005\uff0c\u7f8e\u56fd\u53ef\u518d\u751f\u80fd\u6e90\u5b9e\u9a8c\u5ba4\u53ca\u5357\u65b9\u79d1\u6280\u5927\u5b66\u4e3a\u8bba\u6587\u901a\u8baf\u5355\u4f4d\u3002\u8be5\u7814\u7a76\u5f97\u5230\u56fd\u5bb6\u81ea\u7136\u79d1\u5b66\u57fa\u91d1\u53ca\u7f8e\u56fd\u80fd\u6e90\u90e8\u7684\u652f\u6301\u3002<\/p>\n

\u6587\u7ae0\u94fe\u63a5\uff1a<\/p>\n

Chen, Xihan* et. al. Tuning Spin-Polarized Lifetime in Two-Dimensional Metal\u2013Halide Perovskite through Exciton Binding Energy, J. Am. Chem. Soc. ASAP<\/em><\/p>\n

https:\/\/pubs.acs.org\/doi\/10.1021\/jacs.1c08514<\/a><\/p>\n

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