{"id":75095,"date":"2017-04-10T06:30:43","date_gmt":"2017-04-09T22:30:43","guid":{"rendered":"\/\/m.iemloyee.com\/?p=75095"},"modified":"2017-04-09T20:03:15","modified_gmt":"2017-04-09T12:03:15","slug":"nature-energy-%e5%a4%9a%e6%bf%80%e5%8f%91%e5%ad%90%e7%94%a8%e4%ba%8e%e5%85%89%e7%94%b5%e5%8c%96%e5%ad%a6%e6%9e%90%e6%b0%a2%e5%8f%8d%e5%ba%94%ef%bc%8c%e9%87%8f%e5%ad%90%e4%ba%a7%e7%8e%87%e8%b6%85","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=75095","title":{"rendered":"Nature Energy: \u591a\u6fc0\u53d1\u5b50\u7528\u4e8e\u5149\u7535\u5316\u5b66\u6790\u6c22\u53cd\u5e94\uff0c\u91cf\u5b50\u4ea7\u7387\u8d85\u8fc7100\uff05"},"content":{"rendered":"
\u3010\u5f15\u8a00\u3011<\/strong><\/span><\/p>\n \u7528\u4e8e\u80fd\u6e90\u50a8\u5b58\uff0c\u71c3\u6599\u548c\u539f\u6599\u7684\u592a\u9633\u80fd\u5230\u5316\u5b66\u80fd\u6e90\u8f6c\u6362\uff0c\u7279\u522b\u662f\u89e3\u51b3\u6e29\u5ba4\u6c14\u4f53\u6392\u653e\uff0c\u662f\u592a\u9633\u80fd\u53d1\u7535\u9886\u57df\u79d1\u5b66\u5bb6\u7684\u4e3b\u8981\u76ee\u6807\u4e4b\u4e00\u3002\u9ad8\u6548\u7684\u592a\u9633\u80fd\u8f6c\u6362\u6548\u7387\u662f\u6280\u672f\u53ef\u884c\u6027\u7684\u5173\u952e\uff0c\u56e0\u4e3a\u8fd9\u76f4\u63a5\u5f71\u54cd\u5230\u88ab\u8986\u76d6\u7684\u571f\u5730\u9762\u79ef\uff0c\u6700\u7ec8\u4f1a\u5f71\u54cd\u7cfb\u7edf\u7684\u6210\u672c\u3002\u9650\u5236\u592a\u9633\u80fd\u8f6c\u6362\u7cfb\u7edf\u8f6c\u6362\u6548\u7387\u7684\u4e3b\u8981\u56e0\u7d20\u662f\u5177\u6709\u5927\u4e8e\u534a\u5bfc\u4f53\u5e26\u9699\uff08Eg\uff09\u80fd\u91cf\u7684\u5149\u5b50\u4ea7\u751f\u4e86\u901a\u8fc7\u7535\u5b50\u03c0\u58f0\u5b50\u6563\u5c04\u5f1b\u8c6b\u7684\u70ed\u8f7d\u6d41\u5b50\uff0c\u968f\u540e\u7684\u58f0\u5b50\u8017\u6563\u964d\u4f4e\u4e86\u80fd\u91cf\u8f6c\u6362\u6548\u7387\u3002<\/p>\n \u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/span><\/p>\n \u91cf\u5b50\u70b9\uff08QDs\uff09\u4e2d\u7684\u591a\u91cd\u6fc0\u5b50\u4ea7\u751f\uff08MEG\uff09\u6709\u53ef\u80fd\u5927\u5927\u63d0\u9ad8\u592a\u9633\u80fd\u7535\u6c60\u548c\u592a\u9633\u80fd\u71c3\u6599\u751f\u4ea7\u4e2d\u7684\u529f\u7387\u8f6c\u6362\u6548\u7387\u3002\u5728MEG\u8fc7\u7a0b\u4e2d\uff0c\u4ece\u4e00\u4e2a\u9ad8\u80fd\u5149\u5b50\u7684\u5438\u6536\u4ea7\u751f\u4e24\u4e2a\u7535\u5b50-\u7a7a\u7a74\u5bf9\uff08\u6fc0\u5b50\uff09\uff0c\u901a\u8fc7\u53d1\u5c04\u58f0\u5b50\u7ed5\u8fc7\u70ed\u8f7d\u6d41\u5b50\u51b7\u5374\u3002\u57282017\u5e744\u67084\u65e5Nature Energy<\/strong>\u4e0a\u7684\u4e00\u7bc7\u9898\u4e3a\u201cMultiple exciton generation for photoelectrochemical hydrogen evolution reactions with quantum yields exceeding 100%<\/strong>\u201d<\/em>\u7684\u6587\u7ae0\u4e2d\uff0c\u7f8e\u56fd\u56fd\u5bb6\u53ef\u518d\u751f\u80fd\u6e90\u5b9e\u9a8c\u5ba4\u79d1\u5b66\u4e0e\u7eb3\u7c73\u79d1\u5b66\u4e2d\u5fc3Matthew C. Beard\u8bfe\u9898\u7ec4<\/strong>\u63d0\u51fa\uff0c\u901a\u8fc7MEG\u751f\u4ea7\u7684\u989d\u5916\u7684\u8f7d\u6d41\u5b50\u53ef\u7528\u4e8e\u9a71\u52a8100\uff05\u4ee5\u4e0a\u7684\u91cf\u5b50\u6548\u7387\u7684\u5316\u5b66\u53cd\u5e94\u3002\u7814\u7a76\u4eba\u5458\u5f00\u53d1\u4e86\u4e00\u79cd\u786b\u5316\u94c5\uff08PbS\uff09QD\u5149\u7535\u5316\u5b66\u7535\u6c60\uff0c\u80fd\u591f\u4ece\u5916\u90e8\u91cf\u5b50\u6548\u7387\u8d85\u8fc7100\uff05\u7684Na2<\/sub>S\u6eb6\u6db2\u4e2d\u9a71\u52a8\u6790\u6c22\u3002\u5f53\u5165\u5c04\u5149\u5b50\u80fd\u91cf\u5927\u4e8e\u5e26\u9699\u80fd\u91cf\u76842.7\u500d\u65f6\uff0c\u6d4b\u91cf\u7684\u6240\u6709QD\u5149\u7535\u6781\u90fd\u663e\u793a\u51faMEG\u3002\u8be5\u7814\u7a76\u7ed3\u679c\u8868\u660e\u4e86\u63a2\u7d22\u592a\u9633\u80fd\u71c3\u6599\u9ad8\u6548\u7387\u65b9\u6cd5\u7684\u65b0\u65b9\u5411\u3002<\/p>\n \u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/span><\/p>\n \u56fe\u4e00\uff1a<\/strong> MEG PEC<\/strong>\u7535\u6c60\u7ed3\u6784<\/strong><\/span><\/p>\n a\uff0cPEC\u88c5\u7f6e\u793a\u610f\u56fe\u3002QD\u5c42\u6784\u6210\u5149\u7535\u9633\u6781\u7684\u6709\u6e90\u533a\u3002\u53f3\u8fb9\u662f\u5149\u751f\u7a7a\u7a74\u6c27\u5316\u786b\u5316\u7269\uff0c\u800c\u7535\u5b50\u5728Pt\u9634\u6781\u4e0a\u8fd8\u539f\u6c22\u3002\u76d0\u6865\u8fde\u63a5\u4e24\u4e2a\u7535\u6781\u5e76\u8fd0\u8f93H+<\/sup>\u548cNa+<\/sup>\u3002<\/p>\n b\uff0c\u76f8\u5bf9\u4e8e\u6b63\u5e38\u6c22\u7535\u6781\uff0cNHE\uff08V\uff09\uff0cQD\u5149\u7535\u6781\u7684\u80fd\u7ea7\uff08Eg<\/sub>\u4e3aQD\u5e26\u9699\uff09\u3002\u7535\u5b50\u4f7fQD\u5c42\u901a\u8fc7TiO 2<\/sub>\u5177\u6709\u8db3\u591f\u7684\u5316\u5b66\u52bf\u6765\u5c06H+<\/sup>\u8fd8\u539f\u6210H2<\/sub>\uff0c\u800c\u7a7a\u7a74\u53ef\u4ee5\u6c27\u5316\u786b\u5316\u7269\u3002<\/p>\n c\uff0cd\uff0cQD\u5c42\u539a\u5ea6\u4e3a\uff08c\uff09265nm\u548c\uff08d\uff09370nm\u7684\u5178\u578bPbS QD\u5149\u7535\u6781\u7684\u626b\u63cf\u7535\u5b50\u663e\u5fae\u7167\u7247\u3002\u4e24\u4e2a\u56fe\u50cf\u7684\u6bd4\u4f8b\u5c3a\u76f8\u540c\u3002<\/p>\n e\uff0c\u5bf9\u4e8e\u5728\u5355\u4e2a\u91cf\u5b50\u70b9\u5185\u5438\u6536\u7684\u9ad8\u80fd\u91cf\u5149\u5b50\uff0cMEG\u4ea7\u751f\u53ef\u4ee5\u53c2\u4e0e\u6c27\u5316\u548c\u8fd8\u539f\u53cd\u5e94\u7684\u4e24\u4e2a\u6216\u591a\u4e2a\u7535\u5b50-\u7a7a\u7a74\u5bf9\u3002\u5728QD\u8868\u9762\u4f7f\u7528\u5316\u5b66\u53cd\u5e94\u53ef\u4ee5\u5c06\u989d\u5916\u7684\u8f7d\u4f53\u76f4\u63a5\u50a8\u5b58\u5728\u5316\u5b66\u952e\u4e0a\u3002<\/p>\n \u56fe\u4e8c\uff1a<\/strong>PEC<\/strong>\u6027\u80fd\u8868\u5f81<\/strong><\/span><\/p>\n a\uff0c\u5728Na2<\/sub>S\u542b\u6c34\u7535\u89e3\u8d28\u4e2d\uff0cPbS QD\u5149\u7535\u6781\u4ea7\u6c22\u6709\u5e26\u9699Eg<\/sub>\u4e3a0 .85eV\uff08\u7ea2\u8272\u5706\u5708\uff09\uff0c0.92eV\uff08\u7eff\u8272\u6b63\u65b9\u5f62\uff09\u548c1.08eV\uff08\u9ed1\u8272\u4e09\u89d2\u5f62\uff09\u7684EQE\uff08\u586b\u5145\u7b26\u53f7\uff09\u3002\u4ee5\u53ca\u5bf9380-500nm\u8303\u56f4\u5185\u7684IPCE\uff08\u5f00\u653e\u7b26\u53f7\uff09\u8fdb\u884c\u6bd4\u8f83\u3002<\/p>\n b\uff0cPbS QD\u5149\u7535\u6781\u7684\u5178\u578b\u7a33\u6001\u65a9\u5149\u7535\u6d41\u6d4b\u91cf\uff08\u5c3a\u5ea6\u4e3a5 \u03bcAcm–<\/sup>2<\/sup>\uff09\u3002<\/p>\n c\uff0c\u7b26\u53f7\u8868\u793aPbS QD\u5149\u7535\u6781\u5728\u5e26\u9699Eg<\/sub>\u4e3a0.85eV\uff08\u7ea2\u8272\u5706\u5708\uff09\uff0c0.92eV\uff08\u7eff\u8272\u65b9\u5757\uff09\u548c1.08eV\uff08\u9ed1\u8272\u4e09\u89d2\u5f62\uff09\u7684IPCE\u3002 \u865a\u7ebf\u662f\u6eb6\u6db2\u4e2dQD\u7684\u5438\u6536\u5149\u8c31\u3002<\/p>\n \u56fe\u4e09\uff1a\u524d\u540e\u7167\u660e\u7684<\/strong>IPCE<\/strong><\/span><\/p>\n \u524d\u9762\uff08\u5b9e\u5fc3\u5706\uff09\u548c\u80cc\u9762\uff08\u7a7a\u5fc3\u5706\uff09\u7167\u660e\u548cQD\u5c42\u7684\u4e24\u4e2a\u539a\u5ea6\uff08\u84dd\u8272= 265nm\u548c\u7ea2\u8272= 370nm\uff09\u7684IPCE\uff08QD Eg<\/sub>\uff1a0.85eV\uff09\u7684\u6bd4\u8f83\u3002\uff08\u63d2\u56fe\uff1a\u5149\u7167\u8def\u5f84\u7684\u6f14\u793a\uff09<\/p>\n \u56fe\u56db\uff1a\u5438\u6536\u5149\u5b50\u5230\u7535\u6d41\u7684\u6548\u7387\u6d4b\u91cf<\/strong><\/span><\/p>\n a\uff0cAPCE\u4f5c\u4e3a\u7167\u660e\u5149\u5b50\u80fd\u91cf\uff08eV\uff09\u7684\u51fd\u6570\u3002<\/p>\n b\uff0cAPCE\u4f5c\u4e3a\u5165\u5c04\u5149\u80fd\u9664\u4ee5QD\u5e26\u9699\u80fd\u91cf\u6216\u5e26\u9699\u7684\u500d\u6570\uff08hv\/Eg<\/sub>\uff09\u7684\u51fd\u6570\u3002\uff08\u84dd\u8272\u5b9e\u7ebf\uff0c\u7ebf\u6027\u62df\u5408hv\/Eg<\/sub>\u4e3a1.6\u81f32.5\u548c2.8\u81f33.6\uff09\u3002\u9608\u503c\u5149\u5b50\u80fd\u91cf\uff08(hvth<\/sub>\/ Eg<\/sub>\uff09\u7ea6\u4e3a2.7\u3002<\/p>\n \u00a0<\/strong>\u3010\u603b\u7ed3\u3011<\/strong><\/span><\/p>\n \u5728\u8be5\u7814\u7a76\u7ed3\u679c\u8868\u660e\uff0c\u5728\u71c3\u6599\u5f62\u6210\u53cd\u5e94\u4e2d\u53ef\u4ee5\u6355\u83b7\u591a\u91cd\u6fc0\u5b50\u4ea7\u751f\u7684\u7535\u5b50\u3002\u5bf9\u4e8e\u672a\u6765\u8bbe\u8ba1\u548c\u5f00\u53d1PEG\u7cfb\u7edf\u6765\u8bf4\uff0c\u53ef\u4ee5\u5229\u7528MEG\u6765\u5149\u5206\u89e3\u6c34\uff0c\u4ee5\u4ea7\u751f\u6c22\u71c3\u6599\uff0c\u76ee\u6807\u662f\u8d85\u8d8aShockley-Queisser\u6781\u9650\u3002\u4e32\u8054\u6216\u5e76\u8054\u7684\u4e24\u4e2a\u6216\u591a\u4e2a\u5149\u7535\u6781\u80fd\u591f\u5229\u7528MEG\uff0c\u8fd9\u662f\u672a\u6765\u7814\u7a76\u7684\u4e00\u4e2a\u6f5c\u5728\u9886\u57df\u3002\u6700\u540e\uff0c\u4e3a\u4e86\u53d1\u6325\u6700\u5927\u7684\u4f5c\u7528\uff0cMEG\u8d77\u59cb\u5e94\u5c3d\u53ef\u80fd\u63a5\u8fd1\u4e24\u500d\u7684\u5e26\u9699\u3002\u6b63\u5728\u8fdb\u884c\u7684\u7814\u7a76\u663e\u793aMEG\u8d77\u59cb\u7684\u66f4\u591a\u63a5\u8fd12Eg<\/sub>\u6781\u9650\u7684\u65b0\u5f02\u6784\u7ed3\u6784QD\u7cfb\u7edf\u3002<\/p>\n \u6587\u732e\u94fe\u63a5\uff1a<\/strong>Multiple exciton generation for photoelectrochemical hydrogen evolution reactions with quantum yields exceeding 100%<\/a>\uff08Nature Energy, 2017\uff0cdoi:10.1038\/nenergy.2017.52\uff09<\/p>\n \u672c\u6587\u7531\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u7ec4 \u80cc\u9006\u65f6\u5149 \u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u7f16\u8f91\u6574\u7406\u3002<\/p>\n \u70b9\u8fd9\u91cc\u52a0\u5165\u6750\u6599\u4eba\u7684\u5927\u5bb6\u5ead<\/a>\u3002\u53c2\u4e0e\u65b0\u80fd\u6e90\u8bdd\u9898\u8ba8\u8bba\u8bf7\u52a0\u5165\u201c\u6750\u6599\u4eba\u65b0\u80fd\u6e90\u6750\u6599\u4ea4\u6d41\u7fa4 422065952\u201d<\/p>\n \u4eea\u5668\u8bbe\u5907\u3001\u8bd5\u5242\u8017\u6750\u3001\u6750\u6599\u6d4b\u8bd5\u3001\u6570\u636e\u5206\u6790\uff0c\u627e<\/strong>\u6750\u6599\u4eba<\/strong><\/a>\u3001\u4e0a<\/strong>\u6d4b\u8bd5\u8c37<\/strong><\/a>\uff01<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":" \u3010\u5f15\u8a00\u3011 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