{"id":103211,"date":"2017-09-23T06:30:07","date_gmt":"2017-09-22T22:30:07","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=103211"},"modified":"2017-09-21T20:07:59","modified_gmt":"2017-09-21T12:07:59","slug":"%e5%8d%97%e4%ba%ac%e5%a4%a7%e5%ad%a6%e7%8e%8b%e6%ac%a3%e7%84%b6nano-lett-%ef%bc%9a%e5%bc%82%e8%b4%a8%e7%bb%93%e5%90%b8%e5%85%89%e5%b1%82%e4%bc%98%e5%8c%96%e7%9f%b3%e5%a2%a8%e7%83%af%e5%85%89%e7%94%b5","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=103211","title":{"rendered":"\u5357\u4eac\u5927\u5b66\u738b\u6b23\u7136Nano lett.\uff1a\u5f02\u8d28\u7ed3\u5438\u5149\u5c42\u4f18\u5316\u77f3\u58a8\u70ef\u5149\u7535\u6676\u4f53\u7ba1"},"content":{"rendered":"<p><strong>\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n<p>\u77f3\u58a8\u70ef\u5177\u6709\u5bbd\u9891\u5e26\u3001\u5149\u5438\u6536\u7cfb\u6570\u53ef\u63a7\u4ee5\u53ca\u9ad8\u8f7d\u6d41\u5b50\u8fc1\u79fb\u7387\u7b49\u7279\u70b9\uff0c\u56e0\u6b64\uff0c\u5176\u5728\u9ad8\u901f\u5149\u7535\u5b50\u9886\u57df\u662f\u4e00\u79cd\u5177\u6709\u5de8\u5927\u6f5c\u529b\u7684\u6750\u6599\u3002\u4f46\u662f\uff0c\u5728\u53ef\u89c1\u5149\u548c\u8fd1\u7ea2\u5916\u6ce2\u6bb5\uff0c\u77f3\u58a8\u70ef\u7684\u5149\u5438\u6536\u7cfb\u6570\u8f83\u4f4e(\u4f4e\u4e8e2.3%)\u3002\u4e3a\u63d0\u9ad8\u5149\u7535\u6676\u4f53\u7ba1\u7684\u7075\u654f\u5ea6\uff0c\u53ef\u4ee5\u5c06\u77f3\u58a8\u70ef\u548c\u5149\u654f\u534a\u5bfc\u4f53\u8fdb\u884c\u590d\u5408\u3002\u5728\u8be5\u7c7b\u590d\u5408\u5668\u4ef6\u4e2d\uff0c\u7535\u5b50\u7a7a\u7a74\u5bf9\u5728\u5149\u654f\u534a\u5bfc\u4f53\u4e2d\u4ea7\u751f\u540e\uff0c\u4f1a\u5728\u754c\u9762\u5904\u5206\u79bb\uff0c\u6700\u540e\u7531\u77f3\u58a8\u70ef\u8fdb\u884c\u6536\u96c6\u4ee5\u4ea7\u751f\u5149\u7535\u6d41\u3002\u7136\u800c\uff0c\u8be5\u7c7b\u5668\u4ef6\u5f80\u5f80\u4f1a\u9677\u5165\u5149\u54cd\u5e94\u5ea6\u548c\u54cd\u5e94\u65f6\u95f4\u4e4b\u95f4\u7684\u77db\u76fe\u3002\u53e6\u5916\uff0c\u7531\u4e8e\u7f3a\u5c11\u5185\u90e8\u7535\u573a\uff0c\u7531\u5355\u5c42\u5438\u5149\u5c42\u7ec4\u6210\u7684\u77f3\u58a8\u70ef\u590d\u5408\u5149\u7535\u6676\u4f53\u7ba1\u4f1a\u6291\u5236\u7535\u5b50\u7a7a\u7a74\u5bf9\u7684\u5206\u79bb\uff0c\u4ece\u800c\u964d\u4f4e\u4e86\u91cf\u5b50\u6548\u7387\u3002<\/p>\n<p><strong>\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n<p>\u8fd1\u65e5\uff0c<strong>\u5357\u4eac\u5927\u5b66\u738b\u6b23\u7136\u6559\u6388\u548c\u65bd\u6bc5\u6559\u6388<\/strong><strong>(<\/strong><strong>\u5171\u540c\u901a\u8baf\u4f5c\u8005<\/strong><strong>)<\/strong>\u7b49\u4eba\u5728<strong>Nano Letters<\/strong>\u4e0a\u53d1\u8868\u9898\u4e3a\u201c<strong>Improving the Performance of Graphene Phototransistors Using a Heterostructure as the Light-Absorbing Layer<\/strong>\u201d\u7684\u6587\u7ae0\u3002\u8be5\u6587\u4e2d\uff0c\u7814\u7a76\u8005\u63d0\u51fa\u4e86\u4e00\u79cd\u901a\u8fc7\u8bbe\u8ba1\u5f02\u8d28\u7ed3\u6784\u4f5c\u4e3a\u77f3\u58a8\u70ef\u57fa\u5149\u7535\u6676\u4f53\u7ba1\u7684\u5438\u5149\u5c42\u6765\u540c\u6b65\u6539\u5584\u5668\u4ef6\u5149\u54cd\u5e94\u5ea6(R)\u3001\u54cd\u5e94\u65f6\u95f4(\u03c4)\u4ee5\u53ca\u91cf\u5b50\u6548\u7387(QE)\u7684\u65b9\u6cd5\u3002\u548c\u4ee5\u5f80\u62a5\u9053\u4e2d\u4f7f\u7528\u5916\u52a0\u6805\u573a\u6765\u4fc3\u8fdb\u7535\u8377\u5206\u79bb\u7684\u539f\u7406\u4e0d\u540c\uff0c\u5728\u8fd9\u79cd\u65b9\u6cd5\u4e2d\uff0c\u7814\u7a76\u4eba\u5458\u5728\u534a\u5bfc\u4f53\u754c\u9762\u4e0a\u5f00\u53d1\u4e86\u4e00\u79cd\u672c\u5f81\u5185\u7f6e\u7535\u573a\u3002\u4ee5\u6709\u673a\u4f4e\u805a\u7269PTCDA\u548c\u5e76\u4e94\u82ef\u4e3a\u4f8b\uff0c\u7814\u7a76\u4eba\u5458\u53d1\u73b0\u77f3\u58a8\u70ef\/PTCDA\/\u5e76\u4e94\u82ef(GPP)\u5149\u7535\u6676\u4f53\u7ba1\u7684\u54cd\u5e94\u5ea6\u53ef\u8fbe10<sup>5<\/sup>A\/W\uff0c\u672c\u5f81\u54cd\u5e94\u65f6\u95f4\u53ef\u964d\u4f4e\u81f328\u03bcs\uff0c\u5185\u91cf\u5b50\u6548\u7387(IQE)\u53ef\u8fbe64%\u3002\u5728\u8be5\u4f53\u7cfb\u7684\u590d\u5408\u5668\u4ef6\u4e2d\uff0cR\u3001\u03c4\u4ee5\u53caQE\u540c\u65f6\u5f97\u5230\u4e86\u6781\u5927\u7684\u6539\u5584\uff0c\u5e76\u4e14\u590d\u5408\u4f53\u7cfb\u7684\u5438\u6536\u7cfb\u6570\u8fdc\u8d85\u4e09\u79cd\u6750\u6599\u5355\u72ec\u4f5c\u7528\u65f6\u7684\u503c\u3002\u7814\u7a76\u4eba\u5458\u53d1\u73b0\uff0c\u9ad8\u54c1\u8d28PTCDA\/\u5e76\u4e94\u82ef\u754c\u9762\u5c06\u4f1a\u4fc3\u8fdb\u7535\u8377\u8fc1\u79fb\u6001(CT)\u7684\u5f62\u6210\uff0c\u8fd9\u5c06\u540c\u65f6\u4fc3\u8fdb\u4e24\u79cd\u6750\u6599\u4e2d\u7535\u5b50\u7a7a\u7a74\u5bf9\u7684\u5206\u79bb\uff0c\u5e76\u4e14\u6709\u6548\u63d0\u9ad8\u91cf\u5b50\u6548\u7387\u3002<\/p>\n<p><strong>\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n<p><strong>\u56fe<\/strong><strong>1. GPP<\/strong><strong>\u5149\u7535\u6676\u4f53\u7ba1\u7684\u539f\u7406\u56fe\u4ee5\u53ca\u5236\u5907\u8981\u70b9<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-103215\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-1.png\" alt=\"\" width=\"600\" height=\"644\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-1.png 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-1-280x300.png 280w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>a.GPP\u5149\u7535\u6676\u4f53\u7ba1\u539f\u7406\u793a\u610f\u56fe\u3002<\/p>\n<p>b.GPP\u5149\u7535\u6676\u4f53\u7ba1\u7684\u539f\u5b50\u529b\u663e\u5fae\u7ed3\u6784\u56fe\u3002\u4e3a\u4e86\u83b7\u5f97\u8db3\u591f\u7684\u6e05\u6670\u5ea6\uff0cb\u56fe\u4e0a\u7684\u5668\u4ef6\u7528PCDTA\u5168\u90e8\u8986\u76d6\uff0c\u5e76\u7528\u5e76\u4e94\u82ef\u90e8\u5206\u8986\u76d6\u3002\u6bd4\u4f8b\u5c3a\uff1a2\u03bcm\u3002<\/p>\n<p>c.GPP\u5149\u7535\u6676\u4f53\u7ba1\u7684\u80fd\u5e26\u793a\u610f\u56fe\u3002<\/p>\n<p>d.h-BN\/PTCDA\u6837\u54c1\u5728\u5e76\u4e94\u82ef\u751f\u957f\u524d\u540e\u7684PL\u56fe\u8c31(\u5de6\u4fa7\u56fe\u6837\u54c1\u4e3a\u751f\u957f\u524d\uff0c\u4e2d\u95f4\u56fe\u6837\u54c1\u4e3a\u751f\u957f\u540e)\u3002\u6bd4\u4f8b\u5c3a\uff1a5\u03bcm\u3002\u865a\u7ebf\u5708\u51fa\u4e86\u6837\u54c1\u533a\u57df\uff0c\u77e9\u5f62\u5b9e\u7ebf\u5185\u7684\u7ea2\u8272\u533a\u57df\u4e3a\u672a\u8986\u76d6\u5e76\u4e94\u82ef\u7684\u6837\u54c1\u533a\u57df\uff0c\u8be5\u533a\u57df\u5728\u539f\u5b50\u529b\u663e\u5fae\u955c\u7684\u53f3\u4fa7\u56fe\u4e0a\uff0c\u56e0\u6b64\u53ef\u89c1\u660e\u4eae\u7684PL\u56fe\u8c31\u3002\u6bd4\u4f8b\u5c3a\uff1a2\u03bcm\u3002<\/p>\n<p>e.\u90e8\u5206\u533a\u57df\u8986\u76d6PCTDA\u548c\u5e76\u4e94\u82ef\u7684\u77f3\u58a8\u70ef\u5668\u4ef6\u7684AFM\u56fe(\u9876\u90e8\u56fe)\u548cSKPM\u56fe(\u8f83\u4f4e\u5c42\u56fe)\u3002\u6bd4\u4f8b\u5c3a\uff1a2\u03bcm\u3002<\/p>\n<p>f.\u56fee\u4e2d\u6cbf\u865a\u7ebf\u90e8\u5206\u5bf9\u5e94\u7684\u9ad8\u5ea6\u548c\u8868\u9762\u7535\u4f4d\uff0cPCDTA\u7684\u539a\u5ea6\u5c0f\u4e8e3.4nm\uff0c\u5bf9\u5e94\u7684\u5c42\u6570\u4e3a11\u5c42\uff0c\u6bcf\u4e00\u5c42\u5e76\u4e94\u82ef\u7684\u539a\u5ea6\u5c0f\u4e8e1.5nm\uff0cPCDTA\/\u5e76\u4e94\u82ef\u7684\u672c\u5f81\u7535\u4f4d\u5c0f\u4e8ePCDTA\/\u77f3\u58a8\u70ef\u7684\u672c\u5f81\u7535\u4f4d\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>2. GPP<\/strong><strong>\u7684\u5149\u654f\u53cd\u5e94\u53ca\u5176\u63a7\u5236\u88c5\u7f6e<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-103212\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-2.png\" alt=\"\" width=\"600\" height=\"155\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-2.png 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-2-300x78.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>a.GPP\u5668\u4ef6\u53ca\u5176\u63a7\u5236\u88c5\u7f6e\u7684\u5149\u54cd\u5e94\u5ea6-\u6ce2\u957f\u5173\u7cfb\u3002\u84dd\u8272\u5706\u5708\u4ee3\u8868GPP\u5668\u4ef6\uff0cPCDTAA\u548c\u5e76\u4e94\u82ef\u7684\u5e73\u5747\u539a\u5ea6\u4ee5\u53ca\u5e76\u4e94\u82ef\u7684\u8986\u76d6\u7387\u5206\u522b\u4e3a4nm\u30011.3L\u4ee5\u53ca82%\u3002\u7070\u8272\u65b9\u5757\u4ee3\u8868\u77f3\u58a8\u70ef\/PCDTA\u63a7\u5236\u88c5\u7f6e\uff0c\u7070\u8272\u4e09\u89d2\u5f62\u4ee3\u8868\u77f3\u58a8\u70ef\/\u5e76\u4e94\u82ef\u63a7\u5236\u88c5\u7f6e\u3002\u5728\u6240\u6709\u6d4b\u8bd5\u8fc7\u7a0b\u4e2d\uff0c\u6fc0\u5149\u80fd\u91cf\u4e3a100 \u03bcW\u3002\u7ea2\u8272\u548c\u84dd\u8272\u9634\u5f71\u533a\u57df\u76f8\u5e94\u4e8ePCDTA\u548c\u5e76\u4e94\u82ef\u5bf9\u5149\u7684\u5438\u6536\u3002\u9ec4\u8272\u5cf0\u4e3a\u4e24\u79cd\u5438\u6536\u5149\u8c31\u7684\u7d2f\u79ef\u548c\uff0c\u8fd9\u4e0eGPP\u5bbd\u9891\u5149\u54cd\u5e94\u5ea6\u543b\u5408\u8f83\u597d\u3002<\/p>\n<p>b.\u4e09\u79cdGPP\u5149\u7535\u6676\u4f53\u7ba1\u4ee5\u53ca\u77f3\u58a8\u70ef\/PCDTA\u63a7\u5236\u5668\u4ef6\u4e2d\u5149\u53cd\u5e94\u5ea6\u548c\u6fc0\u5149\u80fd\u91cf\u5bc6\u5ea6\u4e4b\u95f4\u7684\u5173\u7cfb\u3002PCDTAA\u548c\u5e76\u4e94\u82ef\u7684\u5e73\u5747\u539a\u5ea6\u4ee5\u53ca\u5e76\u4e94\u82ef\u7684\u8986\u76d6\u7387\u5206\u522b\u4e3a11.3nm\u30011.1L\u4ee5\u53ca71%(\u7ea2\u8272\u5706\u5708)\u300112nm\u30013L\u4ee5\u53ca93%(\u84dd\u8272\u77e9\u5f62)\u300119nm\u30014.5L\u4ee5\u53ca94%(\u6a44\u6984\u8272\u83f1\u5f62)\u3002\u56fea\u548cb\u4e0a\u7684\u6d4b\u8bd5\u662f\u5728V<sub>ds<\/sub> = 0.1 V\uff0cV<sub>g<\/sub> \u2212 V<sub>0 <\/sub>= \u221210 V\u7684\u6761\u4ef6\u4e0b\u8fdb\u884c\u7684\u3002<\/p>\n<p>c.\u5de6\u4fa7\u56fe\u4e0a\u4e3aGPP\u5668\u4ef6\u539f\u5b50\u529b\u663e\u5fae\u4e0b\u7684\u7269\u76f8\u56fe\uff0c\u8f6e\u5ed3\u5185\u90e8\u4e3a\u5f02\u8d28\u7ed3\u6784\u533a\u57df\u3002\u53f3\u4fa7\u56fe\u4e0a\u4e3a\u5668\u4ef6\u7684\u5149\u7535\u6d41\u56fe\u3002\u6bd4\u4f8b\u5c3a\uff1a5\u03bcm\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>3. GPP<\/strong><strong>\u5149\u7535\u6676\u4f53\u7ba1\u7684\u52a8\u6001\u53cd\u5e94\u8fc7\u7a0b<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-103213\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-3.png\" alt=\"\" width=\"600\" height=\"498\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-3.png 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-3-300x249.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>a.\u56fe2(a)\u4e2dGPP\u5668\u4ef6\u7684\u03c4-V<sub>g<\/sub>\u5173\u7cfb\u3002\u84dd\u8272\u77e9\u5f62\u3001\u7eff\u8272\u4e09\u89d2\u5f62\u4ee5\u53ca\u7ea2\u8272\u5706\u5708\u5206\u522b\u4ee3\u8868495 nm\u3001550 nm\u4ee5\u53ca670nm\u7684\u6fc0\u5149\u5149\u7167\u5ea6\u3002<\/p>\n<p>b.550 nm\uff0cV<sub>g<\/sub>\u2212V<sub>0<\/sub>=\u22128V\u6761\u4ef6\u4e0b(\u4e0a\u56fe)\u4ee5\u53caV<sub>g<\/sub>\u2212V<sub>0<\/sub>=10V\u6761\u4ef6\u4e0b(\u4e0b\u56fe)\u7684\u52a8\u6001\u53cd\u5e94\u66f2\u7ebf\u3002\u5b9e\u7ebf\u672b\u5c3e\u51fa\u5448\u6307\u6570\u5173\u7cfb\u3002<\/p>\n<p>c.V<sub>g<\/sub>\u2212V<sub>0<\/sub>&gt;0(\u5de6\u56fe)\u548cV<sub>g<\/sub>\u2212V<sub>0<\/sub>&lt;0(\u53f3\u56fe)\u6761\u4ef6\u4e0b\u590d\u5408\u8fc7\u7a0b\u7684\u80fd\u91cf\u56fe\u3002<\/p>\n<p><strong>\u56fe<\/strong><strong>4. <\/strong><strong>\u91cf\u5b50\u6548\u7387\u5206\u6790<\/strong><\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-103214\" src=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-4.png\" alt=\"\" width=\"600\" height=\"167\" srcset=\"http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-4.png 600w, http:\/\/www.cailiaoniu.com\/wp-content\/uploads\/2017\/09\/20170915-4-300x84.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\" 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href=\"http:\/\/pubs.acs.org\/doi\/10.1021\/acs.nanolett.7b03263\" target=\"_blank\" rel=\"noopener\">Improving the Performance of Graphene Phototransistors Using a Heterostructure as the Light-Absorbing Layer<\/a> (Nano Letters\uff0c2017\uff0cDOI: 10.1021\/acs.nanolett.7b03263)<\/p>\n<p>\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u65b0\u4eba\u7ec4\u5218\u68a6\u73ae\u7f16\u8bd1\uff0c\u8d75\u98de\u9f99\u5ba1\u6838\uff0c<a href=\"http:\/\/www.cailiaoniu.com\/25127.html\" target=\"_blank\" rel=\"noopener\">\u70b9\u6211\u52a0\u5165\u6750\u6599\u4eba\u7f16\u8f91\u90e8<\/a>\u3002<\/p>\n<p><strong>\u6750\u6599\u6d4b\u8bd5\uff0c\u6570\u636e\u5206\u6790\uff0c\u4e0a<\/strong><a href=\"http:\/\/www.ceshigu.com\/\" target=\"_blank\" rel=\"noopener\"><strong>\u6d4b\u8bd5\u8c37<\/strong><\/a><strong>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u3010\u5f15\u8a00\u3011 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