{"id":46171,"date":"2016-10-20T06:30:27","date_gmt":"2016-10-19T22:30:27","guid":{"rendered":"\/\/m.iemloyee.com\/?p=46171"},"modified":"2016-10-17T22:04:37","modified_gmt":"2016-10-17T14:04:37","slug":"energy-environ-sci-%ef%bc%9a%e9%80%9a%e8%bf%87%e7%bb%93%e6%9e%84%e8%bd%ac%e5%8f%98%e8%af%b1%e5%af%bc%e8%83%bd%e5%b8%a6%e6%94%b6%e6%95%9b%e5%92%8c%e5%8c%96%e5%ad%a6%e9%94%ae%e8%bd%af%e5%8c%96%e8%8e%b7","status":"publish","type":"post","link":"\/\/m.iemloyee.com\/?p=46171","title":{"rendered":"Energy Environ. Sci.\uff1a\u901a\u8fc7\u7ed3\u6784\u8f6c\u53d8\u8bf1\u5bfc\u80fd\u5e26\u6536\u655b\u548c\u5316\u5b66\u952e\u8f6f\u5316\u83b7\u5f97\u9ad8\u70ed\u7535\u6027\u7684\u65e0Te\u70ed\u7535\u6750\u6599"},"content":{"rendered":"

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

\u5177\u591a\u91cd\u72ed\u80fd\u9699\u548c\u8f6f\u5316\u5b66\u952e\u7684\u534a\u5bfc\u4f53\u662f\u9ad8\u70ed\u7535\u6027\u8bbe\u5907\u7684\u7406\u60f3\u6750\u6599\u3002\u7136\u800c\uff0c\u5728\u6b64\u4e4b\u4e2d\uff0c\u5177\u72ed\u5e26\u9699\u548c\u590d\u6742\u8868\u9762\u72b6\u6001\uff0c\u5e7f\u4e3a\u4eba\u77e5\u7684\u4e09\u7ef4\u62d3\u6251\u7edd\u7f18\u4f53Bi2<\/sub>Se3<\/sub>\uff0c\u548c\u540c\u7c7b\u578b\u7684Bi2<\/sub>Te3<\/sub>\u5728\u4f5c\u4e3a\u70ed\u7535\u6750\u6599\u7684\u7814\u7a76\u70ed\u5ea6\u4e0d\u65ad\u964d\u4f4e\u3002\u5c3d\u7ba1\u5bccTe\u7684n\u578bBi2<\/sub>(Se,Te)3<\/sub>\u7cfb\u7edf\u7684ZT\u503c\u53ef\u8fbe1.1-1.2\uff0c\u4f46\u7531\u4e8eTe\u5728\u5730\u7403\u7684\u5bcc\u542b\u5ea6\u8f83\u4f4e\uff0c\u4ece\u800c\u9650\u5236\u4e86\u8fd9\u7c7b\u70ed\u7535\u6750\u6599\u7684\u5927\u89c4\u6a21\u5e94\u7528\u3002\u800c\u5bf9\u4e8e\u65e0Te\u7684Bi2<\/sub>Te3<\/sub>\uff0c\u9996\u8981\u7684\u7814\u7a76\u4efb\u52a1\u5c31\u662f\u63d0\u9ad8\u5176ZT\uff08~0.3\uff09\u503c\u3002\u65e9\u5148\u6709\u901a\u8fc7\u6539\u53d8\u5176\u7eb3\u7c73\u7ed3\u6784\u548c\u63ba\u6742\u7684\u65b9\u6cd5\u63d0\u9ad8ZT\u503c\uff0c\u4f46\u6536\u6548\u751a\u5fae.\u3002<\/p>\n

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

\u4e0a\u6d77\u5927\u5b66\u7684\u5f20\u6587\u6e05\u6559\u6388<\/strong>\u548c\u534e\u76db\u987f\u5927\u5b66\u7684\u6768\u7ee7\u8f89\u6559\u6388\uff08<\/strong>\u5171\u540c\u901a\u8baf\u4f5c\u8005\uff09<\/strong>\u7b49\u4eba\u901a\u8fc7\u5229\u7528Sb\u5408\u91d1\u5316\u8bf1\u5bfc\u6676\u4f53\u7ed3\u6784\u8f6c\u53d8\uff0c\u540c\u65f6\u5b9e\u73b0\u80fd\u5e26\u6536\u655b\u53ca\u5f3a\u5316\u58f0\u5b50\u6563\u5c04\uff0c\u6781\u5927\u7684\u63d0\u9ad8\u4e86\u65e0Te Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u7684ZT\u503c\uff0c\u4ece\u539f\u6765\u76840.3\u63d0\u9ad8\u52301.0\uff0c\u4f7f\u5176\u5728\u4e2d\u4f4e\u6e29\u53d1\u7535\u8bbe\u5907\u4e2d\u6709\u7740\u6f5c\u5728\u7684\u7528\u9014\u3002\u6b64\u6b21\u7814\u7a76\u8fc7\u7a0b\u5c06\u5316\u5b66\u952e\u8f6f\u5316\u548c\u7ed3\u6784\u53d8\u5f62\u7ed3\u5408\uff0c\u4f7f\u6750\u6599\u7535\u5b50\u5e26\u7ed3\u6784\u548c\u58f0\u5b50\u6563\u5c04\u53d1\u751f\u5de8\u5927\u6539\u53d8\uff0c\u80fd\u5e26\u7684\u6536\u655b\u6781\u5927\u63d0\u9ad8\u4e86\u6750\u6599\u72b6\u6001\u6709\u6548\u8d28\u91cf\u7684\u7535\u5b50\u5bc6\u5ea6\uff0c\u8d5b\u8d1d\u514b\u7cfb\u6570\u5728800K\u4e0b\u53ef\u8fbe\u5230-280 \u03bcVK-1<\/sup>\uff0c\u800c\u58f0\u5b50\u7684\u8f6f\u5316\u548c\u56fa\u6709\u7684\u6676\u683c\u975e\u8c10\u6027\u632f\u52a8\u5c5e\u4e8e\u5f31\u7684\u94fe\u95f4\u76f8\u4e92\u4f5c\u7528\uff0c\u963b\u788d\u4e86\u8f7d\u70ed\u7684\u58f0\u70ed\u5b50\u8fd0\u52a8\uff0c\u4ece\u800c\u5bfc\u81f4\u8d85\u4f4e\u7684\u6676\u683c\u70ed\u5bfc\u7387\uff0c300K\u4e0b\u5927\u7ea6\u4e3a0.6 W m-1<\/sup>\u00a0K-1<\/sup>\uff0c800K\u4e0b0.3 W m-1<\/sup> K-1<\/sup>\u3002\u8fd9\u6b21\u7814\u7a76\u4e2d\u7528\u5230\u7684\u6676\u683c\u8f6c\u53d8\u9a71\u4f7f\u80fd\u5e26\u6536\u655b\u548c\u5316\u5b66\u952e\u8f6f\u5316\u7684\u65b9\u6cd5\u540c\u6837\u4e5f\u53ef\u5e94\u7528\u5728\u5176\u4ed6\u70ed\u7535\u6750\u6599\u4e2d\uff0c\u4ee5\u63d0\u9ad8\u70ed\u7535\u6027\uff0c\u4ee5\u8fdb\u4e00\u6b65\u6316\u6398\u65b0\u6750\u6599\u3002<\/p>\n

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

\u56fe\u4e00\u3001\u6750\u6599\u7684\u5f62\u8c8c\u4e0e\u8868\u5f81<\/strong><\/p>\n

\"\"<\/p>\n

(a) Bi2<\/sub>Se3<\/sub>\u2013Sb2<\/sub>Se3<\/sub>\u7684\u76f8\u56fe<\/p>\n

(b) XRD\u56fe\u8c31<\/p>\n

(c) \u7ed3\u5408\u65e9\u671f\u7684\u7814\u7a76\u7ed3\u679c\u8ba1\u7b97\u6750\u6599\u7684\u6676\u683c\u5e38\u6570<\/p>\n

(d)-(f) \u5206\u522b\u4e3ax=0.4,0.6\u53ca10\u65f6\uff0c\u6837\u54c1Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u7684BSE\u56fe\u50cf<\/p>\n

\u56fe\u4e8c\u3001\u5ba4\u6e29\u4e0bSb\u6210\u5206\u7684\u53d8\u5316\u5bf9Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u7684\u7269\u7406\u53c2\u6570\u5f71\u54cd<\/strong><\/p>\n

\"\"<\/p>\n

(a) \u7535\u5bfc\u7387\u548c\u8d5b\u8d1d\u514b\u7cfb\u6570<\/p>\n

(b) \u8f7d\u6d41\u5b50\u6d53\u5ea6\u548c\u8fc1\u79fb\u7387<\/p>\n

(c) \u7535\u5b50\u5e73\u5747\u81ea\u7531\u7a0bI\u548cKFl<\/p>\n

(d) \u7535\u5b50\u6709\u6548\u8d28\u91cfm*\/m0<\/sub>\u53ca\u8d39\u7c73\u80fd\u7ea7\u0572\u7684\u51cf\u5c11\uff0c\u9634\u5f71\u533a\u4e3a\u4e24\u76f8\u533a<\/p>\n

\u56fe\u4e09\u3001Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u7684\u7535\u5b50\u7ed3\u6784<\/strong>\"\"<\/p>\n

(a-c) Bi2<\/sub>Se3<\/sub>(a)\uff0c\u00a0BiSbSe3<\/sub>(b)\uff0cSb2<\/sub>Se3<\/sub>(c)\uff0c(a)-(c)\u4e2d\u7684\u70b9\u548c\u865a\u7ebf\u5206\u522b\u4ee3\u8868\u4e0e\u8f7d\u6d41\u5b50\u6d53\u5ea63\u00d710 19<\/sup> cm-3<\/sup>\u548c9\u00d71019<\/sup> cm-3<\/sup>\u65f6\u5bf9\u5e94\u7684\u8d39\u7c73\u6c34\u5e73\u3002(a)-(c)\u4e2d\u7684\u5185\u5d4c\u56fe\u793a\u8f7d\u6d41\u5b50\u6d53\u5ea63\u00d710 19<\/sup> cm-3<\/sup>\u4e0b\u9996\u4e2aBrillouin \u533a\u57df\u8ba1\u7b97\u5f97\u5230\u7684\u8d39\u7c73\u8868\u9762\u3002<\/p>\n

(d) \u4eceCBM\u5bfc\u5e26\u4e2d\u7684\u6001\u5bc6\u5ea6<\/p>\n

\u56fe\u56db\u3001Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u7684\u7269\u7406\u53c2\u6570\u53ca\u6676\u4f53\u7ed3\u6784\u56fe\u793a<\/strong>\"\"<\/p>\n

(a) \u4e0d\u540cSb\u7ec4\u5206\u4e0bBi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u7684\u6676\u683c\u70ed\u5bfc\u7387\u3002\u5b9e\u7ebf\u548c\u865a\u7ebf\u5747\u57fa\u4e8eKlemens\u2013Callaway\u7406\u8bba\u4f30\u8ba1\u6240\u5f97\uff0c\u4f7f\u7528\u4e0d\u540c\u7684\u03b5\u503c\uff0c\u8bef\u5dee\u5728\u00b15%<\/p>\n

(b) \u6676\u4f53\u7ed3\u6784 \u00a0 \u00a0 \u00a0 (c) \u94fe\u95f4(\u865a\u7ebf)\u548c\u94fe\u5185Sb-Se\u952e\u957f\u5ea6<\/p>\n

(d) \u58f0\u5b50\u6563\u5c04 \u00a0 \u00a0 \u00a0\u00a0(e) O- BiSbSe3<\/sub>\u72b6\u6001\u7684\u58f0\u5b50\u5bc6\u5ea6<\/p>\n

\u56fe\u4e94\u3001Bi2-x<\/sub>Sbx<\/sub>(Se1-y<\/sub>Iy<\/sub>)3<\/sub> (x = 0.8, 1.0; y = 0-0.03)\u968f\u6e29\u5ea6\u6539\u53d8\u7684\u7535\u5b50\u4f20\u8f93\u6027\u8d28<\/strong><\/p>\n

\"\"<\/p>\n

(a) \u7535\u5bfc\u7387 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (b) \u8d5b\u8d1d\u514b\u7cfb\u6570<\/p>\n

(c) \u529f\u7387\u7cfb\u6570 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (d) \u8f7d\u6d41\u5b50\u6d53\u5ea6<\/p>\n

(e) \u970d\u5c14\u8fc1\u79fb\u7387 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 (f)\u00a0\u8d39\u7c73\u80fd\u7ea7\u51cf\u5c0f\uff0c\u7535\u5b50\u6709\u6548\u8d28\u91cf\u7684\u6539\u53d8\uff0c\u7528Kane\u6a21\u578b\u8ba1\u7b97\u6240\u5f97\u3002<\/p>\n

\u56fe\u516d\u3001Bi2-x<\/sub>Sbx<\/sub>(Se1-y<\/sub>Iy<\/sub>)3<\/sub> (x = 0.8, 1.0; y = 0-0.03)\u70ed\u4f20\u8f93\u6027\u8d28<\/strong>\"\"<\/p>\n

(a) \u70ed\u5bfc\u7387-\u6e29\u5ea6<\/p>\n

(b) \u6676\u683c\u70ed\u5bfc\u7387-\u6e29\u5ea6\uff0c\u865a\u7ebf\u8868\u793aBiSbSe3<\/sub>\u6700\u5c0f\u7684\u70ed\u5bfc\u7387\uff0c\u5b9e\u7ebf\u8868\u73b0\u51fa\u03baL<\/sub>\u221d\u0490–<\/sup>0.6<\/sup>\u7684\u8d8b\u52bf<\/p>\n

\u56fe\u4e03\u3001\u7898\u63ba\u6742Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u53ca\u5404\u7c7bn\u578b\u70ed\u7535\u6750\u6599\u7684ZT\u503c\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb\u56fe<\/strong>\"\"<\/p>\n

(a) \u7898\u63ba\u6742\u7684Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u5176ZT\u503c\u968f\u6e29\u5ea6\u7684\u53d8\u5316<\/p>\n

(b) \u7528\u4e8e\u51b7\u5374\u6216\u4e2d\u4f4e\u6e29\u53d1\u7535\u8bbe\u5907\u5e94\u7528\u7684n\u578b(Bi, Sb)2<\/sub>(Te, Se, S)3<\/sub>\u57fa\u6750\u6599ZT\u503c\u7684\u589e\u957f\u8d8b\u52bf<\/p>\n

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

\u901a\u8fc7\u6539\u53d8Sb\u7ec4\u5206\u7684\u542b\u91cf\u8c03\u8282\u6676\u4f53\u7ed3\u6784\uff0c\u5e76\u63ba\u6742\u7898\u6539\u53d8\u8f7d\u6d41\u5b50\u6d53\u5ea6\uff0c\u8fd9\u90fd\u6709\u52a9\u4e8e\u5236\u5907\u5177\u9ad8ZT\u503c\u7684\u65e0Te Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u591a\u6676\u4f53\u3002Sb\u6210\u5206\u8bf1\u5bfc\u76f8\u8f6c\u53d8\u5e76\u6781\u5927\u7684\u6539\u53d8\u4e86\u7535\u5b50\u548c\u58f0\u5b50\u7684\u6027\u8d28\uff0c\u4f7fZT\u503c\u5448\u4e09\u500d\u7684\u589e\u957f\u3002\u5e76\u4e14\u952e\u65ad\u88c2\u4e0e\u4f38\u957f\u6709\u6548\u8f6f\u5316\u4e86\u5316\u5b66\u952e\uff0c\u56e0\u6b64\u5f15\u8d77\u58f0\u5b50\u963b\u5c3c\u548c\u975e\u8c10\u7684\u6676\u683c\u632f\u52a8\uff0c\u5bfc\u81f4\u6676\u683c\u70ed\u5bfc\u7387\u964d\u4f4e\u3002\u8fd9\u90fd\u4f7f\u65e0Te\u7684Bi2-x<\/sub>Sbx<\/sub>Se3<\/sub>\u70ed\u7535\u6750\u6599\u7684\u70ed\u7535\u6027\u5f97\u5230\u6781\u5927\u63d0\u9ad8\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/strong>High thermoelectric performance in Te-free (Bi,Sb)2Se3 via structural transition induced band convergence and chemical bond softening<\/a>\uff08Energy Environ. Sci.\uff0c2016\uff0cDOI\uff1a10.1039\/c6ee02674e\uff09<\/p>\n

\u672c\u6587\u7531\u6750\u6599\u4eba\u7f16\u8f91\u90e8\u7535\u5b50\u7535\u5de5\u5b66\u672f\u7ec4\u5927\u9ed1\u5929\u4f9b\u7a3f\uff0c\u6750\u6599\u725b\u7f16\u8f91\u6574\u7406\u3002<\/p>\n

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