{"id":96167,"date":"2017-08-19T06:30:05","date_gmt":"2017-08-18T22:30:05","guid":{"rendered":"\/\/m.iemloyee.com\/?p=96167"},"modified":"2017-08-17T08:23:27","modified_gmt":"2017-08-17T00:23:27","slug":"%e3%80%90%e8%bf%98%e6%98%af%e6%a8%a1%e7%b3%8a%e7%9a%84%ef%bc%8c%e8%be%9b%e8%8b%a6%e5%86%8d%e6%94%b9%e4%b8%8b%e3%80%91jacs%ef%bc%9a%e9%80%9a%e8%bf%87%e8%83%bd%e5%b8%a6%e5%89%aa%e8%a3%81%e5%92%8c","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=96167","title":{"rendered":"JACS\uff1a\u901a\u8fc7\u80fd\u5e26\u526a\u88c1\u548c\u5f15\u5165\u539f\u5b50\u5c3a\u5ea6\u7f3a\u9677\u534f\u540c\u4f18\u5316(Na,K)\u5171\u63ba\u6742\u591a\u6676SnSe\u7684\u70ed\u7535\u6027\u80fd"},"content":{"rendered":"

\u3010\u5f15\u8a00\u3011<\/strong><\/p>\n

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\u3010\u6210\u679c\u7b80\u4ecb\u3011<\/strong><\/p>\n

\u6700\u8fd1\uff0c\u5317\u822a\u7684\u8d75\u7acb\u4e1c\u6559\u6388\u3001\u6606\u660e\u7406\u5de5\u5927\u5b66\u7684\u51af\u6676\u6559\u6388\u548c\u5fb7\u56fd\u4e8e\u5229\u5e0c\u7535\u955c\u4e2d\u5fc3\u7684\u90d1\u98ce\u73ca\u535a\u58eb\uff08\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u7b49\u4eba\u4e8eJACS<\/strong>\u4e0a\u53d1\u8868\u4e86\u6587\u7ae0\u201cBoosting the Thermoelectric Performance of (Na,K)-Codoped Polycrystalline SnSe by Synergistic Tailoring of the Band Structure and Atomic-Scale Defect Phonon Scattering\u201d<\/strong>\uff0c\u672c\u6587\u7b2c\u4e00\u4f5c\u8005\u4e3a\u6606\u660e\u7406\u5de5\u5927\u5b66\uff08\u7b2c\u4e00\u5b8c\u6210\u5355\u4f4d\uff09\u7684\u845b\u632f\u534e\u6559\u6388<\/strong>\u3002\u7814\u7a76\u8005\u901a\u8fc7\uff08Na, K\uff09\u5171\u63ba\u6742\u8fdb\u884c\u80fd\u5e26\u7ed3\u6784\u7684\u201c\u526a\u88c1\u201d\u548c\u5f15\u5165\u539f\u5b50\u5c3a\u5ea6\u7f3a\u9677\u58f0\u5b50\u6563\u5c04\u673a\u5236\uff0c\u6210\u529f\u5f97\u5230\u9ad8\u70ed\u7535\u6027\u80fd\u7684p\u578b\u591a\u6676SnSe\u6750\u6599\uff0c\u529f\u7387\u56e0\u5b50\u6700\u5927\u53ef\u8fbe492 \u03bcW m\u22121<\/sup> K\u22122<\/sup>\uff0c\u6676\u683c\u70ed\u5bfc\u7387\u5728773K\u65f6\u964d\u4f4e\u81f30.29Wm\u22121<\/sup> K\u22121<\/sup>\uff0c1%\uff08Na,K\uff09\u5171\u63ba\u6742\u6837\u54c1ZT\u503c\u53ef\u8fbe1.2\u3002\u8be5\u7814\u7a76\u4e3a\u63d0\u9ad8\u591a\u6676SnSe\u6750\u6599\u70ed\u7535\u6027\u80fd\u63d0\u4f9b\u4e86\u4e00\u79cd\u65b0\u7684\u534f\u540c\u63ba\u6742\u65b9\u6cd5\uff0c\u5e76\u4e14\u4e5f\u9002\u7528\u4e8e\u5176\u4ed6\u70ed\u7535\u6750\u6599\u4f53\u7cfb\u3002<\/p>\n

\u3010\u56fe\u6587\u5bfc\u8bfb\u3011<\/strong><\/p>\n

\u56fe<\/strong>1 <\/strong>\u7ed3\u6784\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u6cbf[010]\u89c2\u5bdf\u5230\u7684SnSe\u7684\u9ad8\u5206\u8fa8\u7387STEM HAADF\u56fe\u50cf<\/p>\n

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\uff08c-f\uff09SnSe\u6837\u54c1\u6cbf[010]\u65b9\u5411\u7684\u7684\u539f\u5b50\u5c3a\u5ea6EDS\u9762\u626b\u56fe<\/p>\n

\u56fe<\/strong>2 <\/strong>\u63ba\u6742\u6837\u54c1\u7684<\/strong>TEM<\/strong>\u4f4e\u500d\u660e\u573a\u50cf<\/strong><\/p>\n

\"\"<\/p>\n

 <\/p>\n

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\uff08b\uff09SnSe\uff080.5\uff05Na + 0.5\uff05K\uff09\u5171\u63ba\u6742\u6837\u54c1\u4e2d\u7684\u6790\u51fa\u7269\u5206\u5e03\u56fe<\/p>\n

\u63d2\u56fe\u4e3a\u76f8\u5e94\u7684\u7535\u5b50\u884d\u5c04\u82b1\u6837\u6807\u5b9a<\/p>\n

\u56fe<\/strong>3 <\/strong>\u80fd\u5e26\u7ed3\u6784<\/strong><\/p>\n

\"\"<\/p>\n

 <\/p>\n

\uff08a\uff09\u672a\u63ba\u6742\u6837\u54c1\u7684\u80fd\u5e26\u7ed3\u6784\u56fe<\/p>\n

\uff08b\uff091% Na\u63ba\u6742\u6837\u54c1\u7684\u80fd\u5e26\u7ed3\u6784<\/p>\n

\uff08c\uff09\uff080.5% Na+0.5% K\uff09\u63ba\u6742\u6837\u54c1\u7684\u80fd\u5e26\u7ed3\u6784<\/p>\n

\u56fe<\/strong>4 <\/strong>\u7535\u5b50\u4f20\u8f93\u6027\u80fd<\/strong><\/p>\n

\"\"<\/p>\n

 <\/p>\n

\uff08a\uff09\u7535\u5bfc\u7387\u968f\u6e29\u5ea6\u53d8\u5316\u66f2\u7ebf<\/p>\n

\uff08b\uff09Seebeck\u7cfb\u6570\u968f\u6e29\u5ea6\u53d8\u5316\u66f2\u7ebf<\/p>\n

\uff08c\uff09\u5ba4\u6e29\u4e0bSeebeck \u7cfb\u6570\u968f\u970d\u5c14\u8f7d\u6d41\u5b50\u6d53\u5ea6\u53d8\u5316\u66f2\u7ebf<\/p>\n

\uff08d\uff09\u529f\u7387\u56e0\u5b50\u968f\u6e29\u5ea6\u53d8\u5316\u66f2\u7ebf<\/p>\n

\u56fe<\/strong>5 <\/strong>\u70ed\u4f20\u8f93\u6027\u80fd<\/strong><\/p>\n

\"\"<\/p>\n

 <\/p>\n

\uff08a\uff09\u603b\u70ed\u5bfc\u7387\u968f\u6e29\u5ea6\u53d8\u5316\u66f2\u7ebf<\/p>\n

\uff08b\uff09\u6676\u683c\u70ed\u5bfc\u7387\u968f\u6e29\u5ea6\u53d8\u5316\u66f2\u7ebf<\/p>\n

\u5b9e\u5fc3\u6807\u5fd7\u8868\u793a\u5b9e\u9a8c\u6d4b\u91cf\u6570\u636e\uff0c\u7a7a\u5fc3\u6807\u5fd7\u8868\u793a\u8ba1\u7b97\u6570\u636e<\/p>\n

\u56fe<\/strong>6 <\/strong>\uff08<\/strong>0.5%Na + 0.5%K<\/strong>\uff09\u63ba\u6742\u6837\u54c1\u4e2d\u7684\u539f\u5b50\u5c3a\u5ea6\u7f3a\u9677<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u53d6\u5411\u4e3a[001]\u548c[011]\u4e24\u6676\u7c92\u95f4\u7684\u6676\u754c\uff0c\u63d2\u56fe\u662f\u4e24\u9897\u6676\u7c92\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\uff08FFT\uff09\u6a21\u578b\uff0c\u767d\u8272\u865a\u7ebf\u4e3a\u6676\u754c\u7684\u4f4d\u7f6e<\/p>\n

\uff08b\uff09\u5d4c\u5165SnSe\u57fa\u8d28\u4e2d\u7684\u6c89\u6dc0\u7269\u3002\u63d2\u56fe\u4e3a\u57fa\u8d28\u7684\u5feb\u901f\u5085\u91cc\u53f6\u53d8\u6362\uff08FFT\uff09\u6a21\u578b\uff0c\u7ea2\u8272\u865a\u7ebf\u91cc\u4e3a\u6c89\u6dc0\u7269<\/p>\n

\uff08c\uff09b\u5e73\u9762\u4e2d\u57fa\u8d28\u548c\u6c89\u6dc0\u7269\u7684\u7684\u5feb\u901f\u5085\u91cc\u53f6\u9006\u53d8\u6362\uff08IFFT\uff09\u6a21\u578b<\/p>\n

\uff08d\uff09\u53cd\u76f8\u7574\u754c\uff08APB\uff09\u53ca\u5176\u76f8\u5e94\u7684\u5177\u67091\/2 [010]\u6676\u4f53\u8f6c\u53d8\u7684{100}\u6676\u9762\u539f\u5b50\u6a21\u578b<\/p>\n

\u56fe<\/strong>7 <\/strong>\u70ed\u7535\u4f18\u503c<\/strong>ZT<\/strong><\/p>\n

\"\"<\/p>\n

\uff08a\uff09\u672c\u7814\u7a76\u4e2d\u6240\u6709\u6837\u54c1\u7684ZT\u503c<\/p>\n

\uff08b\uff09\u6587\u732e\u4e2d\u62a5\u9053\u7684SnSe\u591a\u6676\u6750\u6599<\/p>\n

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

\u591a\u6676SnSe\u6750\u6599\u7684ZT\u503c\u4ece\u672a\u63ba\u6742\u5230\u63ba\u67421%Na\u52301%\uff08Na,K\uff09\u5171\u63ba\u6742\u53d8\u5316\u4e3a0.1-0.3-1.2\uff0cZT\u503c\u5f97\u663e\u8457\u63d0\u9ad8\u6e90\u81ea\u591a\u8c37\u6548\u5e94\u5f15\u8d77\u7684Seebeck\u7cfb\u6570\u589e\u5927\u3001Na\u548cK\u56fa\u6eb6\u5ea6\u63d0\u9ad8\u4ee5\u53ca\u5f15\u5165\u4e86\u539f\u5b50\u5c3a\u5ea6\u7ed3\u6784\u7f3a\u9677\u4ece\u800c\u964d\u4f4e\u4e86\u6676\u683c\u70ed\u5bfc\u7387\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aBoosting the Thermoelectric Performance of (Na,K)-Codoped Polycrystalline SnSe by Synergistic Tailoring of the Band Structure and Atomic-Scale Defect Phonon Scattering<\/a><\/strong>\uff08J. Am. Chem. Soc, 2017, DOI: 10.1021\/jacs.7b05339\uff09<\/p>\n

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