{"id":204008,"date":"2020-06-25T06:59:59","date_gmt":"2020-06-24T22:59:59","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=204008"},"modified":"2020-06-24T21:00:18","modified_gmt":"2020-06-24T13:00:18","slug":"adv-mater-%e5%ae%a4%e6%b8%a9%e4%b8%8b%e5%8f%a0%e5%b1%82tmdc%e5%92%8c%e5%bc%82%e8%b4%a8%e7%bb%93%e6%9e%84%e4%b8%ad%e8%bf%91100%e6%9e%81%e5%8c%96%e7%9a%84%e4%ba%8c%e6%ac%a1%e8%b0%90%e6%b3%a2","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=204008","title":{"rendered":"Adv. Mater. \u5ba4\u6e29\u4e0b\u53e0\u5c42TMDC\u548c\u5f02\u8d28\u7ed3\u6784\u4e2d\u8fd1100%\u6781\u5316\u7684\u4e8c\u6b21\u8c10\u6ce2"},"content":{"rendered":"

\u3010\u7814\u7a76\u80cc\u666f\u3011<\/strong><\/p>\n

2D\u8fc7\u6e21\u91d1\u5c5e\u786b\u65cf\u5316\u5408\u7269\uff082D-TMDC\uff09\u5177\u6709\u72ec\u7279\u7684\u8c37\u76f8\u5173\u5149\u5b66\u548c\u5149\u7535\u6027\u8d28\uff0c\u662f\u4e00\u79cd\u5f88\u6709\u5e94\u7528\u524d\u666f\u7684valleytronics\u6750\u6599\u3002\u5728\u5355\u5c42TMDCs\u4e2d\uff0c\u6676\u4f53\u4e2d\u5fc3\u53cd\u6f14\u5bf9\u79f0\u6027\u7684\u7834\u574f\u548c\u81ea\u65cb\u8f68\u9053\u8026\u5408\uff08SOC\uff09\u5bfc\u81f4\u4e86\u81ea\u65cb-\u8c37\u8026\u5408\u5149\u5b66\u9009\u62e9\u89c4\u5219\u3002\u5bf9\u4e8e\u901a\u5e38\u76842H\u76f8\uff08AB\u5806\u53e0\uff09\u53cc\u5c42TMDCs\uff0c\u7531\u4e8e\u53cd\u6f14\u5bf9\u79f0\u7684\u5b58\u5728\uff0c\u8c37\u6781\u5316\u6d88\u5931\u3002\u7136\u800c\uff0cTMDCs\u4e2d\u7684\u81ea\u65cb-\u8c37\u8026\u5408\u5bfc\u81f4\u4e86\u53cc\u5c42\u6750\u6599\u7684\u81ea\u65cb\u6781\u5316\uff0c\u5728\u5149\u5b66\u8fc7\u7a0b\u4e2d\u4e5f\u4ea7\u751f\u4e86\u6781\u5316\u3002\u5728\u5706\u504f\u632f\u5149\u6fc0\u53d1\u4e0b\uff0c\u7531\u4e8e\u5927\u7684\u81ea\u65cb-\u8c37\u5288\u88c2\uff0c\u57282H\u76f8WS2<\/sub>\u548cWSe2<\/sub>\u53cc\u5c42\u819c\u4e2d\u89c2\u5bdf\u5230\u4e86\u8f83\u5927\u7a0b\u5ea6\u7684\u5706\u504f\u632f\u5149\u6781\u5316\u3002\u6b64\u5916\uff0c\u901a\u8fc7\u5f15\u5165\u5bf9\u79f0\u7834\u7f3a\u53ef\u4ee5\u589e\u5927\u53cc\u5c42\u548c\u591a\u5c42\u819c\u4e2d\u7684\u8c37\u6781\u5316\uff0c\u8fd9\u79cd\u7834\u7f3a\u53ef\u4ee5\u901a\u8fc7\u76f4\u63a5\u751f\u957f\u5bf9\u79f0\u7834\u7f3a\u7684\u4e8c\u7ef4\u5c42\u6765\u5b9e\u73b0\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u65bd\u52a0\u7535\u573a\u7b49\u5916\u90e8\u65b9\u6cd5\u6765\u5b9e\u73b0\uff0c\u5728\u5ba4\u6e29\u4e0b\uff0c\u7531\u4e8e\u8c37\u95f4\u6563\u5c04\u7684\u5b58\u5728\uff0c\u5728\u5355\u5149\u5b50\u5149\u6fc0\u53d1\u4e0b\u5b9e\u73b0\u8c37\u76f8\u5173\u9ad8\u504f\u632f\u5149\u53d1\u5c04\u4ecd\u5177\u6709\u6311\u6218\u6027\u3002<\/p>\n

\u8fd1\u5e74\u6765\uff0c\u4eba\u4eec\u53d1\u73b0\u4e8c\u7ef4TMDCs\u4e2d\u7684\u975e\u7ebf\u6027\u5149\u5b66\u8fc7\u7a0b\uff0c\u5982\u4e8c\u6b21\u8c10\u6ce2\uff08SHG\uff09\u7b49\uff0c\u9075\u5faa\u4e0e\u8c37\u76f8\u5173\u7684\u5149\u5b66\u9009\u62e9\u89c4\u5219\uff0c\u5e76\u5177\u6709\u9ad8\u504f\u632f\u5ea6\u3002\u901a\u8fc7\u5c06\u975e\u7ebf\u6027\u5149\u6fc0\u53d1\u8c03\u8c10\u5230\u6fc0\u5b50\u6001\uff0c\u6700\u8fd1\u572820K\u4e0b\u5b9e\u9a8c\u8bc1\u660e\u4e86\u6fc0\u5b50\u89d2\u52a8\u91cf\u548c\u8c37\u89d2\u52a8\u91cf\u7684\u53d8\u5316\u4ee5\u53ca\u7531\u6b64\u4ea7\u751f\u7684\u8c37\u6fc0\u5b50\u9501\u5b9a\u6548\u5e94\uff0c\u5728Au-WS2<\/sub>\u8d85\u8868\u9762\u5b9e\u73b0\u4e86\u975e\u7ebf\u6027\u624b\u5f81\u8c37\u5149\u5b50\u7684\u76f8\u5e72\u63a7\u5236\u3002\u5c3d\u7ba1\u8bb8\u591a\u5b66\u8005\u5bf9\u8c37\u4f9d\u8d56\u6027\u500d\u9891\u8fdb\u884c\u4e86\u7814\u7a76\uff0c\u4f46\u5355\u5c42\u6750\u6599\u7684\u500d\u9891\u4fe1\u53f7\u666e\u904d\u8f83\u5f31\uff0c\u8fd9\u53ef\u80fd\u4f1a\u963b\u788d\u975e\u7ebf\u6027valleytronic\u5668\u4ef6\u7684\u5e94\u7528\u3002\u56e0\u6b64\uff0c\u7814\u7a76\u591a\u5c42\u8c37\u4f9d\u8d56SHG\u6781\u5316\u6548\u5e94\uff0c\u83b7\u5f97\u5177\u6709\u5f3aSHG\u4fe1\u53f7\u548c\u5927\u504f\u632f\u5ea6\u7684\u6750\u6599\u5177\u6709\u91cd\u8981\u610f\u4e49\u3002\u4e3a\u4e86\u5728\u4e8c\u7ef4TMDCs\u4e2d\u589e\u5f3aSHG\uff0c\u5177\u6709\u5bf9\u79f0\u7834\u7f3a\u7684\u4e8c\u7ef4\u5c42\u72b6\uff0c\u5982AA\u53e0\u52a0\u30013R\u76f8\u4f4d\u548c\u87ba\u65cb\u7ed3\u6784\u5df2\u6709\u7814\u7a76\u3002\u7136\u800c\uff0c\u5bf9\u4e8e\u591a\u5c42TMDCs\u6750\u6599\u7684\u8c37\u76f8\u5173SHG\u6781\u5316\u8fd8\u6ca1\u6709\u7814\u7a76\uff0c\u5c42\u95f4\u76f8\u4e92\u4f5c\u7528\u5bf9SHG\u6781\u5316\u7684\u5f71\u54cd\u8fd8\u4e0d\u6e05\u695a\u3002<\/p>\n

\u3010\u7814\u7a76\u8fdb\u5c55\u3011<\/strong><\/p>\n

\u8fd1\u65e5\uff0c\u6e56\u5357\u5927\u5b66\u6f58\u5b89\u7ec3\u3001\u738b\u7b11\u6559\u6388\u56e2\u961f<\/strong>\u5728\u56fd\u9645\u8457\u540d\u671f\u520aAdv. Mater. <\/strong>\u4e0a\u53d1\u8868\u4e86\u4e00\u7bc7\u9898\u76ee\u4e3a\u201cNear-Unity Polarization of Valley-Dependent Second-Harmonic Generation in Stacked TMDC Layers and Heterostructures at Room Temperature\u201d\u7684\u6587\u7ae0\u3002\u8be5\u5de5\u4f5c\u5236\u5907\u4e86\u5404\u79cd\u53cd\u6f14\u5bf9\u79f0\u7834\u7f3a\uff08\u7c7b3R\u76f8\uff09TMDCs\uff08WSe2<\/sub>\uff0cWS2<\/sub>\uff0cMoS2<\/sub>\uff09\u539f\u5b50\u5c42\u3001\u87ba\u65cb\u7ed3\u6784\u548c\u5f02\u8d28\u7ed3\u6784\uff0c\u5e76\u7814\u7a76\u4e86\u5b83\u4eec\u7684SHG\u6781\u5316\u3002\u901a\u8fc7\u5706\u504f\u632f\u5149\u500d\u9891\u5b9e\u9a8c\uff0c\u8bc1\u660e\u4e86\u5728\u5ba4\u6e29\u4e0b\uff0c\u901a\u8fc7\u6253\u7834\u53cd\u6f14\u5bf9\u79f0\u6027\uff0c\u4f7f\u500d\u9891\u5f3a\u5ea6\u5728\u8f83\u539a\u7684\u6837\u54c1\u4e2d\u5f97\u5230\u589e\u5f3a\uff0c\u540c\u65f6\u4fdd\u6301\u4e86\u63a5\u8fd1\u4e8e100%\u7684\u504f\u632f\u5ea6\u3002\u901a\u8fc7\u5bf9\u4e0d\u540c\u626d\u8f6c\u89d2\u7684TMDC\u548c\u87ba\u65cb\u7ed3\u6784\u7684\u7814\u7a76\uff0c\u53d1\u73b0\u591a\u5c42\u5c42\u95f4\u76f8\u4e92\u4f5c\u7528\u5bf9\u8c37\u76f8\u5173SHG\u6ca1\u6709\u663e\u8457\u5f71\u54cd\u3002\u8fd9\u79cd\u9ad8\u504f\u632f\u5ea6\u5f3a\u500d\u9891\u7684\u5b9e\u73b0\uff0c\u53ef\u80fd\u4e3a\u57fa\u4e8e\u4e8c\u7ef4\u534a\u5bfc\u4f53\u7684\u975e\u7ebf\u6027\u5149\u5b66\u8c37\u7535\u5b50\u5b66\u5668\u4ef6\u63d0\u4f9b\u4e00\u4e2a\u65b0\u7684\u5e73\u53f0\u3002<\/p>\n

\u3010\u56fe\u6587\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u56fe<\/strong>1 <\/strong>\u8c37\u76f8\u5173\u500d\u9891\u9009\u62e9\u89c4\u5219\u548c\u5706\u504f\u632f\u5206\u8fa8\u500d\u9891\u5149\u8c31<\/strong><\/p>\n

\"\"<\/p>\n

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d\uff09 \u901a\u8fc7\u65cb\u8f6c\u504f\u632f\u7247\u4f5c\u4e3a\u63a2\u6d4b\u89d2\u5ea6\u7684\u51fd\u6570\u800c\u6536\u96c6\u7684SHG\u5f3a\u5ea6\u7684\u6781\u5750\u6807\u56fe\u3002\u63d2\u56fe\u663e\u793a\u4e86\u68c0\u6d4b\u5706\u6781\u5316\u500d\u9891\u8f90\u5c04\u7684\u5b9e\u9a8c\u88c5\u7f6e\uff1b<\/p>\n

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g\uff09 \u5355\u5c42\u548c\u53cc\u5c42WSe2<\/sub>\u7684\u5706\u504f\u632f\u5149\u5206\u8fa8SHG\u8c31\u3002<\/p>\n

\u56fe<\/strong>2 <\/strong>\u7a7a\u95f4\u5206\u8fa8\u7684\u5706<\/strong>\u504f\u632f\u5149\u500d\u9891<\/strong><\/p>\n

\"\"<\/p>\n

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d\uff09 \u6839\u636e\u03c3+\u548c\u03c3-\u53d1\u5c04\u5f3a\u5ea6\u7684\u5173\u7cfb\uff0c\u8ba1\u7b97\u4e86SHG\u7684DP\u6210\u50cf\u3002\u6240\u6709\u6807\u5c3a\u4e3a10\u5fae\u7c73\u3002<\/p>\n

\u56fe<\/strong>3 <\/strong>\u4e0d\u540c\u53e0\u5c42\u548c\u5f02\u8d28\u7ed3\u6784\u4e2d<\/strong>SHG<\/strong>\u7684<\/strong>DP<\/strong>\u7279\u6027<\/strong><\/p>\n

\"\"<\/p>\n

a-e\uff09\u5706\u504f\u632f\u5149\u5206\u8fa8\u7684SHG\u8c31\u6765\u81ea\uff1aa\uff09AA\u53e0\u5c42\u53cc\u5c42WS2<\/sub>\uff0cb\uff09\u87ba\u65cbWS2<\/sub>\uff0cc\uff09AAA\u5806\u53e0\u4e09\u5c42MoS2<\/sub>\uff0cd\uff09\u87ba\u65cbMoS2<\/sub>\uff0c\u548ce\uff09AA\u5806\u53e0WS2<\/sub>\/MoS2<\/sub>\u53cc\u5c42\u5f02\u8d28\u7ed3\u6784\u3002\u63d2\u56fe\u663e\u793a\u4e86\u76f8\u5e94\u6837\u672c\u7684\u660e\u573a\u5149\u5b66\u56fe\u50cf\u3002\u6240\u6709\u6807\u5c3a\u4ee3\u886810\u03bcm .f\uff09\u6839\u636e\u5c42\u6570\u7ed8\u5236\u7684\u8fd9\u4e9b\u6837\u54c1\u7684\u500d\u9891DP\u632f\u5e45\u7684\u6bd4\u8f83\u3002<\/p>\n

\u56fe<\/strong>4 SHG<\/strong>\u7684\u6e29\u5ea6\u4f9d\u8d56<\/strong>DP<\/strong><\/p>\n

\"\"<\/p>\n

a\uff09 \u5355\u5c42\uff081L\uff09\u3001AA\u5806\u53e0\u53cc\u5c42\uff082L\uff09\u548cAAA\u5806\u53e0\u4e09\u5c42\uff083L\uff09WSe2<\/sub>\u7684\u5706\u504f\u632f\u5206\u8fa8SHG\u8c31\uff0c\u572810K\u7684800 nm\u98de\u79d2\u6fc0\u5149\u6fc0\u53d1\u4e0b\uff0c\u5206\u522b\u6d4b\u91cf\u4e86\u03c3+\uff08\u9ed1\u8272\uff09\u548c\u03c3-\uff08\u7ea2\u8272\uff09\u504f\u632f\u53d1\u5c04\uff1b<\/p>\n

b\uff09\u5355\u5c42\u3001AA\u5806\u53e0\u53cc\u5c42\u548cAAA\u5806\u53e0\u4e09\u5c42WSe2<\/sub>\u7684SHG DP\u632f\u5e45\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

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

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\u6587\u732e\u94fe\u63a5\uff1a<\/strong>Near-Unity Polarization of Valley-Dependent Second-Harmonic Generation in Stacked TMDC Layers and Heterostructures at Room Temperature<\/a>, 2020, Adv. Mater. DOI: 10.1002\/adma.201908061.<\/p>\n","protected":false},"excerpt":{"rendered":"

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