{"id":225302,"date":"2021-07-31T06:30:59","date_gmt":"2021-07-30T22:30:59","guid":{"rendered":"http:\/\/www.cailiaoniu.com\/?p=225302"},"modified":"2021-07-30T23:35:37","modified_gmt":"2021-07-30T15:35:37","slug":"%e8%b5%b5%e7%ab%8b%e4%b8%9c%e5%8f%88%e5%8f%91%e4%b8%80%e7%af%87science-%e7%9c%8b%e5%a4%a7%e7%89%9b%e5%a6%82%e4%bd%95%e5%9c%a8%e8%bf%99%e4%b8%aa%e7%9b%b8%e5%af%b9%e5%86%b7%e9%97%a8%e7%9a%84","status":"publish","type":"post","link":"http:\/\/www.cailiaoniu.com\/?p=225302","title":{"rendered":"\u81f3\u4eca\u5df25\u7bc7 \u4e14\u770b\u4ed6\u5982\u4f55\u5728\u8fd9\u4e2a\u9886\u57df\u5e74\u5747\u4e00\u7bc7Science!"},"content":{"rendered":"

\u8fd1\u65e5\uff0c\u5317\u4eac\u822a\u7a7a\u822a\u5929\u5927\u5b66\u7684\u8d75\u7acb\u4e1c\u8bfe\u9898\u7ec4\u5728Science\u4e0a\u53d1\u8868\u4e86\u6709\u5173\u70ed\u7535\u6750\u6599\u7684\u6700\u65b0\u7814\u7a76\u6210\u679c\uff0c\u8fd9\u5df2\u7ecf\u662f\u4ed66\u5e74\u91cc\u7684\u7b2c\u4e94\u7bc7Science\u3002<\/p>\n

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

\u70ed\u7535\u6750\u6599\u88ab\u8ba4\u4e3a\u662f\u80fd\u6e90\u6280\u672f\u7684\u6f5c\u5728\u6750\u6599\uff0c\u56e0\u4e3a\u5b83\u4eec\u53ef\u4ee5\u5b9e\u73b0\u70ed\u4e0e\u7535\u4e4b\u95f4\u7684\u76f4\u63a5\u548c\u53ef\u9006\u8f6c\u6362\u3002\u5b83\u4eec\u7684\u5e94\u7528\u5305\u62ec\u5e9f\u70ed\u56de\u6536\u548c\u7535\u5b50\u5236\u51b7\u3002\u70ed\u7535\u6750\u6599\u7684\u6027\u80fd\u7531\u65e0\u91cf\u7eb2\u54c1\u8d28\u56e0\u6570ZT\u51b3\u5b9a\uff0c\u5b9a\u4e49\u4e3a ZT = (S2<\/sup>\u03c3\/\u03ba)\u00b7T\uff0c\u5176\u4e2dS\u3001\u03c3\u3001\u03ba\u548cT\u4ee3\u8868\u585e\u8d1d\u514b\u7cfb\u6570\u3001\u7535\u5bfc\u7387\u3001\u70ed\u5bfc\u7387\u4ee5\u53ca\u5f00\u5c14\u6587\u6e29\u5ea6\u3002\u7531\u4e8e\u5927\u591a\u6570\u70ed\u7535\u53c2\u6570\u4e0e\u52a8\u6001\u8f7d\u6d41\u5b50\u6d53\u5ea6n\u76f8\u4e92\u4f9d\u8d56\uff0c\u5b83\u4eec\u4e4b\u95f4\u5b58\u5728\u7740\u5f3a\u70c8\u7684\u8026\u5408\u5173\u7cfb\uff0c\u800c\u52a8\u6001\u8f7d\u6d41\u5b50\u6d53\u5ea6n\u901a\u5e38\u662f\u70ed\u7535\u4f18\u5316\u7684\u9650\u5236\u56e0\u7d20\u3002\u5df2\u7ecf\u5f00\u53d1\u4e86\u5404\u79cd\u63d0\u9ad8\u70ed\u7535\u6027\u80fd\u7684\u7b56\u7565\uff0c\u5982\u5de5\u7a0b\u8f7d\u6d41\u5b50\u6d53\u5ea6\u3001\u64cd\u7eb5\u7535\u5b50\u80fd\u5e26\u7ed3\u6784\u3001\u901a\u8fc7\u8bbe\u8ba1\u591a\u5c3a\u5ea6\u5fae\u7ed3\u6784\u964d\u4f4e\u70ed\u5bfc\u7387\u3001\u5bfb\u6c42\u5177\u6709\u672c\u5f81\u4f4e\u70ed\u5bfc\u7387\u7684\u6750\u6599\uff0c\u4ee5\u53ca\u89e3\u8026\u7535\u5b50\u548c\u58f0\u5b50\u4f20\u8f93\u3002\u6700\u8457\u540d\u7684\u70ed\u7535\u6750\u6599\u662f\u5177\u6709\u7a84\u5e26\u9699Eg\u7684\u5316\u5408\u7269\uff0c\u56e0\u4e3aEg<\/sub>\u22486~10 kB<\/sub>T\uff08\u5176\u4e2dkB<\/sub>\u662f\u73bb\u5c14\u5179\u66fc\u5e38\u6570\uff09\u901a\u5e38\u88ab\u8ba4\u4e3a\u662f\u5b9e\u73b0\u9ad8\u70ed\u7535\u6027\u80fd\u7684\u4e00\u4e2a\u9009\u62e9\u89c4\u5219\uff0c\u800c\u8d1fEg<\/sub>\u4e5f\u80fd\u5b9e\u73b0\u9ad8\u70ed\u7535\u51b7\u5374\u6027\u80fd\u3002\u4f7f\u7528\u5bbd\u5e26\u9699\u534a\u5bfc\u4f53\u53ef\u4ee5\u5e2e\u52a9\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\uff0c\u4f46\u5bbd\u5e26\u9699\u6750\u6599\u7684\u4f4e\u8f7d\u6d41\u5b50\u6d53\u5ea6\u4f1a\u964d\u4f4e\u7535\u4f20\u8f93\u7279\u6027\u3002\u7136\u800c\uff0c\u5bbd\u5e26\u9699SnSe\u6676\u4f53\uff08~0.86 eV\uff09\u5177\u6709\u4f18\u826f\u7684\u7535\u4f20\u8f93\u6027\u80fd\uff0c\u56e0\u4e3a\u5176\u5c42\u72b6\u7ed3\u6784\u5b9e\u73b0\u66f4\u9ad8\u7684\u9762\u5185\u8f7d\u6d41\u5b50\u8fc1\u79fb\u7387\u03bc\u548c\u591a\u6ce2\u6bb5\u4f7f\u6709\u6548\u8d28\u91cfm*\u66f4\u5927\u3002\u901a\u8fc7\u5bf9\u5176\u663e\u8457\u7684\u7535\u5b50\u548c\u58f0\u5b50\u5e26\u7ed3\u6784\u7684\u8fde\u7eed\u64cd\u7eb5\uff0cSnSe\u6676\u4f53\u5df2\u88ab\u8bc1\u660e\u662f\u4f18\u79c0\u7684\u70ed\u7535\u6750\u6599\u3002\u901a\u8fc7\u6539\u5584\u6676\u4f53\u7ed3\u6784\u7684\u5bf9\u79f0\u6027\u6765\u63d0\u9ad8\u03bc\uff0c\u4ee5\u53ca\u901a\u8fc7\u5f15\u5165\u6fc0\u53d1\u591a\u6ce2\u6bb5\u7684\u5916\u90e8\u7f3a\u9677\u6765\u589e\u5927m*\uff0c\u53ef\u4ee5\u4f18\u5316SnSe\u6676\u4f53\u7684\u70ed\u7535\u6027\u80fd\u3002<\/p>\n

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

\u8fd1\u65e5\uff0c\u5728\u5317\u4eac\u822a\u7a7a\u822a\u5929\u5927\u5b66\u8d75\u7acb\u4e1c\u6559\u6388<\/b><\/strong>\u548c\u5357\u65b9\u79d1\u6280\u5927\u5b66\u4f55\u4f73\u6e05\u6559\u6388<\/b><\/strong>\u56e2\u961f<\/b><\/strong>\u7b49\u4eba<\/b><\/strong>\u5e26\u9886\u4e0b\uff0c\u901a\u8fc7Pb\u5408\u91d1\u5316\u5f00\u53d1\u4e86\u5177\u6709\u5bbd\u5e26\u9699\uff08Eg<\/sub>\u224833 kB<\/sub>T\uff09\u7684SnSe\u6676\u4f53\uff0c\u5e76\u5177\u6709\u51fa\u8272\u7684\u70ed\u7535\u6027\u80fd\u3002Pb\u5408\u91d1\u5316\u4fc3\u8fdb\u4e86\u52a8\u91cf\u548c\u80fd\u91cf\u591a\u6ce2\u6bb5\u6392\u5217\uff0c\u5728300K\u65f6\u4ea7\u751f\u4e86~75\u03bcW cm-1<\/sup>\u00a0K-2<\/sup>\u7684\u8d85\u9ad8\u529f\u7387\u56e0\u6570\uff0c\u4ee5\u53ca~1.90\u7684\u5e73\u5747\u54c1\u8d28\u56e0\u6570ZT\u3002\u7814\u7a76\u53d1\u73b0\uff0c\u91c7\u752831\u5bf9\u70ed\u7535\u88c5\u7f6e\u53ef\u4ea7\u751f~4.4%\u7684\u53d1\u7535\u6548\u7387\u548c~45.7 K\u7684\u51b7\u5374\u0394Tmax<\/sub>\u3002\u8fd9\u4e9b\u7ed3\u679c\u8868\u660e\uff0c\u5bbd\u5e26\u9699\u5316\u5408\u7269\u53ef\u4ee5\u7528\u4e8e\u70ed\u7535\u51b7\u5374\u5e94\u7528\u3002\u76f8\u5173\u6210\u679c\u4ee5\u9898\u4e3a\u201cPower generation and thermoelectric cooling enabled by momentum and energy multiband alignments\u201d<\/b><\/strong>\u53d1\u8868\u5728\u4e86Science<\/b><\/strong>\u3002<\/p>\n

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

\u56fe1<\/b><\/strong>\u00a0\u591a\u6ce2\u6bb5\u5408\u6210\u5f62\u6210\u8d85\u9ad8ZT\u503c<\/b><\/strong>\"\"<\/p>\n

(A) \u4e24\u6b65\u591a\u6ce2\u6bb5\u5408\u6210\u3002<\/p>\n

(B) Sn0.91<\/sub>Pb0.09<\/sub>Se\u6837\u54c1\u7684ZT\u66f2\u7ebf\u5448\u9010\u6b65\u589e\u5f3a\u7684\u8d8b\u52bf\u3002<\/p>\n

\u56fe<\/b><\/strong>2 Sn<\/b><\/strong>1-x<\/b><\/sub><\/strong>Pb<\/b><\/strong>x<\/b><\/sub><\/strong>Se\u6676\u4f53\u7684\u7535\u4f20\u8f93\u7279\u6027\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb<\/b><\/strong>\"\"<\/p>\n

\u00a0(A) \u7535\u5bfc\u7387\u03c3\u3002<\/p>\n

(B) \u585e\u8d1d\u514b\u7cfb\u6570S\u3002<\/p>\n

(C) \u529f\u7387\u56e0\u7d20PF\u3002<\/p>\n

(D) \u672c\u7814\u7a76\u4e2dSn0.91<\/sub>Pb0.09<\/sub>Se\u4e0e\u6700\u5148\u8fdb\u7684p\u578b\u70ed\u7535\u6750\u6599\u4e4b\u95f4\u7684PF\u6bd4\u8f83\uff0c\u4ece\u4f4e\u6e29\uff08T-excess Bi0.5<\/sub>Sb1.5<\/sub>Te3<\/sub>, BST\uff09\u5230\u4e2d\u6e29\uff08MgAgSb, PbTe, \u7a7a\u7a74\u63ba\u6742\u7684SnSe\uff09\u8303\u56f4\u3002<\/p>\n

\u56fe<\/b><\/strong>3<\/b><\/strong>\u00a0\u7535\u5b50\u80fd\u5e26\u7ed3\u6784\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb<\/b><\/strong>\"\"<\/p>\n

(A) SnSe\u5728300K\u65f6\u7684\u7535\u5b50\u80fd\u5e26\u7ed3\u6784\u3002<\/p>\n

(B)\u4ece300 K\u5230773 K\uff0cSnSe\u7684\u56db\u4e2a\u4ef7\u5e26\u8c37\u968f\u7740\u6e29\u5ea6\u7684\u5347\u9ad8\u800c\u52a8\u6001\u6f14\u53d8\uff0c\u5176\u4e2dVBM 1\u5728\u6bcf\u4e2a\u6e29\u5ea6\u4e0b\u90fd\u662f\u6392\u5217\u7684\u3002\u6570\u5b571\u30012\u30013\u548c4\u5206\u522b\u8868\u793a\u7b2c\u4e00\u3001\u7b2c\u4e8c\u3001\u7b2c\u4e09\u548c\u7b2c\u56db\u4ef7\u5e26\u6700\u5927\u503c(VBM)\u3002<\/p>\n

(C) SnSe\u548cSn0.91<\/sub>Pb0.09<\/sub>Se\u7684VBM 1\u548cVBM 2\u3001VBM 1\u548cVBM 3\u3001VBM 1\u548cVBM 4\u3001VBM 3\u548cVBM 4\u4e4b\u95f4\u7684\u80fd\u91cf\u5dee(\u0394E)\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb\u3002<\/p>\n

(D) SnSe\u548cSn0.91<\/sub>Pb0.09<\/sub>Se\u7684VBM 1\u3001VBM 2\u3001VBM 3\u548cVBM 4\u7684\u5355\u6ce2\u6bb5\u6709\u6548\u8d28\u91cf(mb*)\u4e0e\u6e29\u5ea6\u7684\u5173\u7cfb\u3002<\/p>\n

(E)\u4e0d\u540c\u8d39\u7c73\u80fd\u7ea7\u7684p\u578bSnSe\u7684\u5e03\u91cc\u6e0a\u533a\u548c\u8d39\u7c73\u9762\u3002<\/p>\n

(F-H)\u5728300 K\u65f6\uff0c\u4e0d\u540c\u5e26\u6a21\u578b\u7684\u585e\u8d1d\u514b\u7cfb\u6570(F)\u3001\u8f7d\u6d41\u5b50\u8fc1\u79fb\u7387(G)\u548c\u529f\u7387\u56e0\u6570(H)\u7684\u6a21\u62df\u56fe\u4e0e\u8f7d\u6d41\u5b50\u6d53\u5ea6\u7684\u5173\u7cfb\u3002<\/p>\n

(I)\u8ba1\u7b97\u53c2\u6570\u03bc(m*)3\/2<\/sup>\u4f5c\u4e3aPb\u5206\u6570\u7684\u51fd\u6570\uff0c\u8868\u660ePb\u5408\u91d1\u5316\u5bf9p\u578bSnSe\u6676\u4f53\u7535\u4f20\u8f93\u6027\u80fd\u7684\u4f18\u5316\u3002<\/p>\n

\u56fe<\/b><\/strong>4<\/b><\/strong>\u00a0\u970d\u5c14\u6d4b\u91cf\u548c\u70ed\u4f20\u8f93\u7279\u6027<\/b><\/strong>\"\"<\/p>\n

(A) Sn1\u2013x<\/sub>Pbx<\/sub>Se\u6676\u4f53\u7684\u970d\u5c14\u8f7d\u6d41\u5b50\u6d53\u5ea6 (nH<\/sub>) \u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

(B) Sn1\u2013x<\/sub>Pbx<\/sub>Se\u6676\u4f53\u7684\u52a0\u6743\u8fc1\u79fb\u7387(\u03bcW<\/sub>) \u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

(C) Sn1\u2013x<\/sub>Pbx<\/sub>Se\u6676\u4f53\u7684\u603b\u70ed\u5bfc\u7387(\u03batot<\/sub>)\u548c\u6676\u683c\u70ed\u5bfc\u7387(\u03balat<\/sub>)\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

(D) Sn1\u2013x<\/sub>Pbx<\/sub>Se\u6676\u4f53\u7684\u54c1\u8d28\u56e0\u5b50B\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

\u56fe<\/b><\/strong>5 \u5b9e\u9a8c\u548c\u6a21\u62df\u7684\u54c1\u8d28\u56e0\u6570\u548c\u53d1\u7535\u91cf<\/b><\/strong>\"\"<\/p>\n

(A) Sn1-x<\/sub>Pbx<\/sub>Se\u6676\u4f53\u7684ZT\u503c\u968f\u6e29\u5ea6\u7684\u53d8\u5316\u3002<\/p>\n

(B)\u5b9e\u9a8c\u548c\u4e0d\u540c\u6ce2\u6bb5\u6a21\u62df\u7684ZT\u503c\u4e0e\u5728300 K\u4e0b\u8f7d\u6d41\u5b50\u6d53\u5ea6\u7684\u5173\u7cfb\u3002<\/p>\n

(C)\u80fd\u91cf\u8f6c\u6362\u6548\u7387\u03b7\u4e0e\u7535\u6d41I\u7684\u5173\u7cfb\u3002<\/p>\n

(D)\u6bd4\u8f83\u70ed\u7535\u5668\u4ef6\u4e4b\u95f4\u7684\u6548\u7387\u3002<\/p>\n

\u56fe<\/b><\/strong>6<\/b><\/strong>\u00a0Sn<\/b><\/strong>0.91<\/b><\/sub><\/strong>Pb<\/b><\/strong>0.09<\/b><\/sub><\/strong>Se\u6676\u4f53\u7684\u70ed\u7535\u51b7\u5374\u6027\u80fd<\/b><\/strong>\"\"<\/p>\n

\u00a0(A,B) \u6837\u54c1Sn0.91<\/sub>Pb0.09<\/sub>Se\u4e0e\u6700\u5148\u8fdb\u4f4e\u6e29\u70ed\u7535\u6750\u6599\uff0c\u5982p\u578bCsBi4<\/sub>Te6<\/sub>\u3001\u5546\u4e1aBi0.5<\/sub>Sb1.5<\/sub>Te3<\/sub>\u00a0(BST)\u3001n\u578bMg3.2<\/sub>Bi1.498<\/sub>Sb0.5<\/sub>Te0.002<\/sub>\u548c\u5546\u4e1aBi2<\/sub>Te2.7<\/sub>Se0.3<\/sub>\u00a0(BTS)\u6bd4\u8f83PF (A)\u548cZT\u578b(B)\u3002<\/p>\n

(C) Sn0.91<\/sub>Pb0.09<\/sub>Se\u6676\u4f53\u3001\u5546\u4e1aBST\u548cp\u578b\u7eafSnTe\u7684\u5355\u652f\u5668\u4ef6\u7684\u6700\u5927\u6e29\u5dee\u0394Tmax<\/sub>\u3002<\/p>\n

(D) \u0394Tmax<\/sub>\u7528\u4e8e31\u5bf9\u70ed\u7535\u5668\u4ef6\uff0c\u4f7f\u7528Sn0.91<\/sub>Pb0.09<\/sub>Se\u6676\u4f53\u548c\u5546\u7528BST\u4f5c\u4e3ap\u578b\u817f\uff08\u5747\u4f7f\u7528\u5546\u7528BTS\u4f5c\u4e3an\u578b\u817f\uff09\u768431\u5bf9\u70ed\u7535\u5668\u4ef6\u7684 \u0394Tmax<\/sub>\u3002<\/p>\n

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

\u7efc\u4e0a\u6240\u8ff0\uff0c\u7814\u7a76\u7684\u5de5\u4f5c\u63ed\u793a\u4e86p\u578bSnSe\u4e2d\u591a\u4e2a\u4ef7\u5e26\u7684\u7279\u6b8a\u878d\u5408\uff0c\u5305\u62ec\u5408\u5e76\u7684\u5e03\u4e01-\u6a21\u5e26\u7684\u52a8\u91cf\u6392\u5217\uff0c\u805a\u5408\u5e26\u7684\u80fd\u91cf\u6392\u5217\uff0c\u4ee5\u53ca\u7b2c\u56db\u4e2a\u5e26\u7684\u53c2\u4e0e\u3002Pb\u5408\u91d1\u5316\u8fdb\u4e00\u6b65\u4fc3\u8fdb\u4e86\u8fd9\u79cd\u7535\u5b50\u5e26\u7684\u5408\u6210\uff0c\u540c\u65f6\u4f18\u5316\u4e86\u8f7d\u6d41\u5b50\u8fc1\u79fb\u7387\u548c\u585e\u8d1d\u514b\u7cfb\u6570\uff0c\u4ece\u800c\u5728Sn0.91<\/sub>Pb0.09<\/sub>Se\u6676\u4f53\u4e2d\u4ea7\u751f\u4e86\u8d85\u9ad8\u7684PF\u548cZT\u503c\u3002\u540c\u65f6\uff0c\u5b9e\u73b0\u4e86\u4e00\u4e2a\u9ad8\u6027\u80fd\u7684\u70ed\u7535\u88c5\u7f6e\uff0c\u8fdb\u4e00\u6b65\u8bc1\u660e\u4e86\u5bbd\u5e26\u9699SnSe\u6676\u4f53\u5728\u53d1\u7535\uff08\u5982\u6536\u96c6\u5e9f\u70ed\uff09\u548c\u7535\u5b50\u8bbe\u5907\uff08\u5982\u4f5c\u4e3a\u70ed\u7535\u51b7\u5374\u7684\u6e29\u5ea6\u63a7\u5236\u5668\uff09\u4e2d\u7684\u6f5c\u5728\u5e94\u7528\u524d\u666f\u3002\u57fa\u4e8e\u7814\u7a76\u7ed3\u679c\uff0c\u672a\u6765\u7684\u5de5\u4f5c\u91cd\u70b9\u662f\u901a\u8fc7\u4f7f\u7528\u6700\u4f73\u7684\u63a5\u89e6\u6750\u6599\u548c\u7ec4\u88c5\u65b9\u6cd5\u6765\u964d\u4f4e\u754c\u9762\u7535\u963b\uff0c\u4ece\u800c\u63d0\u9ad8\u70ed\u7535\u8bbe\u5907\u7684\u6027\u80fd\u3002<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a<\/b><\/strong>Power generation and thermoelectric cooling enabled by momentum and energy multiband alignments<\/u><\/a>\uff08Science\uff0c2021\uff0cDOI:10.1126\/science.abi8668\uff09<\/p>\n

\u63a5\u4e0b\u6765\u6211\u4eec\u56de\u987e\u4e00\u4e0b\u8d75\u7acb\u4e1c\u6559\u6388\u7684\u524d\u56db\u7bc7Science.<\/p>\n

2020\u5e74Science\uff1a<\/b><\/strong>\u5bfb\u627e\u65b0\u578b\u3001\u9ad8\u6548\u7684\u70ed\u7535\u6750\u6599<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u70ed\u7535\u6280\u672f\u53ef\u4ee5\u76f4\u63a5\u3001\u53ef\u9006\u5730\u5c06\u70ed\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd\u3002\u867d\u7136\u70ed\u7535\u80fd\u6e90\u8f6c\u6362\u7684\u6548\u7387\u6c38\u8fdc\u4e0d\u4f1a\u50cf\u84b8\u6c7d\u673a\u90a3\u6837\u9ad8\uff0c\u4f46\u63d0\u9ad8\u70ed\u7535\u6027\u80fd\u6709\u53ef\u80fd\u4f7f\u70ed\u7535\u80fd\u6e90\u8f6c\u6362\u6280\u672f\u5177\u6709\u4e00\u5b9a\u7684\u5546\u4e1a\u7ade\u4e89\u529b\u3002\u70ed\u7535\u8f6c\u6362\u7684\u6548\u7387\u53ef\u4ee5\u901a\u8fc7\u4e00\u4e2a\u65e0\u91cf\u7eb2\u7cfb\u6570\u6765\u4f30\u8ba1\uff0c\u00a0ZT = S<\/i><\/em>2<\/sup>\u03c3T<\/i><\/em>\/\u03ba\uff0c\u5176\u4e2dS<\/i><\/em>, \u03c3,\u00a0T<\/i><\/em>\u548c\u03ba\u00a0\u5206\u522b\u8868\u793a\u585e\u8d1d\u514b\u7cfb\u6570\u3001\u7535\u5bfc\u7387\u3001\u5de5\u4f5c\u6e29\u5ea6\u548c\u70ed\u5bfc\u7387\u3002\u8fd9\u4e9b\u53c2\u6570\u6709\u5f88\u5f3a\u7684\u8026\u5408\u6027\uff0c\u8fd9\u5bf9\u63d0\u9ad8\u6750\u6599\u7684\u6700\u7ec8ZT\u503c\u975e\u5e38\u5177\u6709\u6311\u6218\u6027\u3002\u63d0\u9ad8\u6750\u6599\u70ed\u7535\u6027\u80fd\u7684\u7b56\u7565\u5305\u62ec\u7eb3\u7c73\u7ed3\u6784\u5316\u3001\u80fd\u5e26\u5de5\u7a0b\u3001\u7eb3\u7c73\u78c1\u6027\u590d\u5408\u3001\u9ad8\u901a\u91cf\u7b5b\u9009\u7b49\u3002\u5176\u4e2d\u8bb8\u591a\u7b56\u7565\u5728\u72ed\u7a84\u7684\u6e29\u5ea6\u8303\u56f4\u5185\u4ea7\u751f\u4e86\u9ad8\u7684ZT\u503c\uff0c\u4f46\u662f\u5374\u9650\u5236\u4e86\u6574\u4f53\u7684\u80fd\u91cf\u8f6c\u6362\u6548\u7387\u3002\u56e0\u6b64\uff0c\u5bfb\u627e\u53ef\u4ee5\u5728\u66f4\u5bbd\u6e29\u5ea6\u8303\u56f4\u5185\u5de5\u4f5c\u7684\u70ed\u7535\u6750\u6599\uff0c\u53ef\u80fd\u9700\u8981\u6211\u4eec\u91cd\u65b0\u601d\u8003\u89e3\u51b3\u65b9\u6cd5\u3002<\/p>\n

2020\u5e743\u6708\uff0c\u8d75\u7acb\u4e1c\u6559\u6388\u5728Science\u4e0a\u53d1\u8868\u4e86\u5728\u70ed\u7535\u6750\u6599\u65b9\u9762\u7684\u9898\u4e3a\u201cSeeking new, highly effective thermoelectrics\u201d\u7684\u89c2\u70b9\u578b\u6587\u7ae0\uff0c\u63d0\u51fa\u4e86\u7b5b\u9009\u65b0\u578b\u9ad8\u6548\u70ed\u7535\u6750\u6599\u7684\u89c4\u5219\uff0c\u5373\u5bbd\u5e26\u9699\u3001\u5206\u5c42\u7ed3\u6784\u548c\u4f4e\u5bf9\u79f0\u6027\u7ed3\u6784\u3002\u540c\u65f6\u5177\u6709\u4ee5\u4e0a\u7279\u5f81\u7684\u534a\u5bfc\u4f53\u6750\u6599\u6709\u671b\u6210\u4e3a\u4e0b\u4e00\u4ee3\u9ad8\u6548\u70ed\u7535\u6750\u6599\u3002\u5728\u8fd9\u4e9b\u9009\u62e9\u89c4\u5219\u4e2d\uff0c\u53ef\u4ee5\u786e\u5b9a\u4e00\u4e9b\u6709\u524d\u9014\u7684\u70ed\u7535\u6750\u6599\uff0c\u6bd4\u5982BiCuSeO\u3001BiSbSe3<\/sub>\u3001K2<\/sub>Bi8<\/sub>Se13<\/sub>\u548cSb2<\/sub>Si2<\/sub>Te6<\/sub>\u3002<\/p>\n

\"\"<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aSeeking new, highly effective thermoelectrics\uff08Science\uff0c2020\uff0cDOI: 10.1126\/science.aaz9426\uff09<\/p>\n

2019\u5e74<\/b><\/strong>Science\uff1a\u5ec9\u4ef7\u73af\u4fdd\u7684\u9ad8\u6027\u80fd\u70ed\u7535\u6750\u6599<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u70ed\u7535\u8f6c\u6362\u6280\u672f\u662f\u4e00\u79cd\u5229\u7528\u534a\u5bfc\u4f53\u6750\u6599\u5c06\u70ed\u80fd\u8f6c\u6362\u4e3a\u7535\u80fd\u7684\u6280\u672f\u3002\u8fd9\u79cd\u6280\u672f\u5177\u6709\u7cfb\u7edf\u4f53\u79ef\u5c0f\uff0c\u53ef\u9760\u6027\u9ad8\u7b49\u4f18\u70b9\uff0c\u6210\u4e3a\u6e05\u6d01\u80fd\u6e90\u5f00\u53d1\u4e2d\u7684\u91cd\u8981\u7814\u7a76\u8bfe\u9898\u3002\u7136\u800c\uff0c\u76ee\u524d\u8868\u73b0\u51fa\u7a81\u51fa\u6027\u80fd\u7684\u70ed\u7535\u6750\u6599\uff08GeTe, PbTe, PbSe, PbS, SnTe, SnSe\u7b49\uff09\u8981\u4e48\u542b\u6709Ge,Te\u7b49\u6602\u8d35\u7684\u7a00\u6709\u5143\u7d20\uff0c\u8981\u4e48\u542b\u6709\u9ad8\u6bd2\u6027\u7684Pb\u3002\u56e0\u6b64\uff0c\u5f00\u53d1\u5ec9\u4ef7\u65e0\u6bd2\u7684\u9ad8\u6027\u80fd\u7684\u70ed\u7535\u6750\u6599\u5bf9\u4e8e\u63d0\u5347\u70ed\u7535\u6750\u6599\u7684\u73af\u4fdd\u7279\u6027\u4e0e\u5e94\u7528\u4ef7\u503c\u5177\u6709\u91cd\u5927\u610f\u4e49\u3002<\/p>\n

Science<\/b><\/strong>\u520a\u767b\u4e86\u4e00\u7bc7\u5317\u822a\u8d75\u7acb\u4e1c\u6559\u6388\u8bfe\u9898\u7ec4<\/b><\/strong>\u5728\u70ed\u7535\u6750\u6599\u9886\u57df\u7684\u6700\u65b0\u8fdb\u5c55\u3002\u8be5\u7814\u7a76\u521b\u65b0\u6027\u7684\u5c06SnSe \u8f6c\u5411\u66f4\u5ec9\u4ef7\u3001\u65e0\u6bd2\u5e76\u542b\u91cf\u4e30\u5bcc\u7684 SnS\u3002\u5e76\u4e14\u901a\u8fc7\u8c03\u53d8\u7535\u5b50\u80fd\u5e26\u7ed3\u6784\u5b9e\u73b0\u4e86SnS\u70ed\u7535\u6027\u80fd\u7684\u8c03\u63a7\u4e0e\u63d0\u5347\u3002<\/p>\n

\"\"<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aHigh thermoelectric performance in low-cost SnS0.91<\/sub>Se0.09<\/sub>crystals<\/a>, \uff082019, Science, DOI:\u00a010.1126\/science.aax5123\uff09<\/p>\n

2018\u5e74<\/b><\/strong>Science\uff1a\u83b7\u5f97\u6700\u5927ZT\u503c\u7684SnSe\u6676\u4f53<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u70ed\u7535\u6280\u672f\u5c06\u70ed\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd\uff0c\u901a\u8fc7\u6536\u96c6\u5de5\u4e1a\u5e9f\u70ed\u63d0\u4f9b\u4e86\u4e00\u6761\u6709\u5229\u73af\u4fdd\u7684\u53d1\u7535\u9014\u5f84\u3002\u70ed\u7535\u6750\u6599\u7684\u8f6c\u6362\u6548\u7387\u7531\u65e0\u91cf\u7eb2\u7684\u56e0\u6570ZT = [\uff08S2<\/sup>\u03c3\uff09\/\u043a] T\u786e\u5b9a\uff0c\u5176\u4e2dS\uff0c\u03c3\uff0c\u043a\u548cT\u5206\u522b\u662fSeebeck\u7cfb\u6570\uff0c\u7535\u5bfc\u7387\uff0c\u70ed\u5bfc\u7387\u548c\u7edd\u5bf9\u6e29\u5ea6\u3002\u7136\u800c\uff0c\u70ed\u7535\u53c2\u6570\u4e4b\u95f4\u590d\u6742\u7684\u76f8\u4e92\u5173\u7cfb\u963b\u788d\u4e86\u6211\u4eec\u6700\u5927\u5316ZT\u503c\u548c\u8f6c\u6362\u6548\u7387\u3002\u8fc4\u4eca\u4e3a\u6b62\uff0c\u5df2\u7ecf\u91c7\u7528\u5404\u79cd\u65b9\u6cd5\u6765\u4f18\u5316\u8fd9\u4e9b\u4e34\u754c\u70ed\u7535\u53c2\u6570\uff0c\u4f8b\u5982\u901a\u8fc7\u5de5\u7a0b\u5e26\u7ed3\u6784\u6765\u63d0\u9ad8\u7535\u8f93\u8fd0\u6027\u8d28\uff0c\u901a\u8fc7\u6563\u5c04\u5168\u5c3a\u5bf8\u957f\u5ea6\u58f0\u5b50\u6765\u964d\u4f4e\u70ed\u5bfc\u7387\uff0c\u5e76\u4e14\u5bfb\u627e\u5177\u6709\u4f4e\u70ed\u5bfc\u7387\u7684\u6f5c\u5728\u6750\u6599\u3002<\/p>\n

2018\u5e745\u6708\uff0c\u5317\u4eac\u822a\u7a7a\u822a\u5929\u5927\u5b66\u5927\u5b66\u8d75\u7acb\u4e1c\u3001\u5357\u65b9\u79d1\u6280\u5927\u5b66\u4f55\u4f73\u6e05\uff08\u5171\u540c\u901a\u8baf\uff09<\/b><\/strong>\u8054\u624b\u5728Science\u53d1\u8868\u9898\u4e3a\u201c3D charge and 2D phonon transports leading to high out-of-plane<\/b><\/strong>\u00a0<\/b><\/strong>ZT<\/b><\/strong>\u00a0<\/b><\/strong>in n-type SnSe crystals<\/b><\/strong>\u201d\u7684\u91cd\u78c5\u6587\u7ae0\uff0c\u5728773K\u6e29\u5ea6\u4e0b\u5b9e\u73b0\u4e86\u5728\u5e73\u9762\u5916\u7684n\u578b\u7852\u5316\u9521\uff08SnSe\uff09\u6676\u4f53\u4e2d\u6700\u5927ZT\u4e3a\u301c2.8\u00b10.5\u3002\u5c42\u72b6SnSe\u6676\u4f53\u7684\u70ed\u5bfc\u7387\u5728\u9762\u5916\u65b9\u5411[\u4e8c\u7ef4\uff082D\uff09\u58f0\u5b50\u4f20\u8f93]\u4e2d\u662f\u6700\u4f4e\u7684\u3002\u7528\u6eb4\u63ba\u6742SnSe\u4ee5\u5236\u5907\u5177\u6709\u91cd\u53e0\u5c42\u95f4\u7535\u8377\u5bc6\u5ea6\uff083D\u7535\u8377\u8f93\u8fd0\uff09\u7684n\u578bSnSe\u6676\u4f53\u3002 \u8fde\u7eed\u7684\u76f8\u53d8\u589e\u52a0\u4e86\u5bf9\u79f0\u6027\u5e76\u4f7f\u4e24\u4e2a\u4f1a\u805a\u5bfc\u5e26\u53d1\u6563\u3002\u8fd9\u4e24\u4e2a\u56e0\u7d20\u6539\u5584\u4e86\u8f7d\u6ce2\u7684\u79fb\u52a8\u6027\uff0c\u540c\u65f6\u4fdd\u7559\u4e86\u5f88\u5927\u7684Seebeck\u7cfb\u6570\u3002\u7814\u7a76\u7ed3\u679c\u53ef\u5e94\u7528\u4e8e\u4e8c\u7ef4\u5206\u5c42\u6750\u6599\uff0c\u5e76\u63d0\u4f9b\u4e00\u79cd\u65b0\u7684\u7b56\u7565\u6765\u589e\u5f3a\u5e73\u9762\u5916\u7535\u8f93\u8fd0\u6027\u80fd\u800c\u4e0d\u964d\u4f4e\u70ed\u6027\u80fd\u3002<\/p>\n

\"\"<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1a3D charge and 2D phonon transports leading to high out-of-plane\u2002ZT\u2002in n-type SnSe crystals<\/a>\uff08Science,2018,DOI:10.1126\/science.aaq1479\uff09<\/p>\n

2016\u5e74S<\/b><\/strong>cience\uff1a<\/b><\/strong>\u8d85\u9ad8\u529f\u7387\u56e0\u6570\u548c\u70ed\u7535\u6027\u80fd\u7684\u7a7a\u7a74\u63ba\u6742\u5355\u6676SnSe<\/b><\/strong><\/p>\n

\"\"<\/p>\n

\u968f\u7740\u4e16\u754c\u4e0a\u8d85\u8fc760%\u7684\u80fd\u91cf\u4f5c\u4e3a\u4f59\u70ed\u5728\u4f4e\u6e29\u548c\u4e2d\u6e29\u8303\u56f4\u5185\u6d88\u5931\uff0c\u76ee\u524d\u8feb\u5207\u9700\u8981\u53ef\u4ee5\u76f4\u63a5\u8f6c\u6362\u5c06\u70ed\u8f6c\u5316\u4e3a\u7535\u80fd\u7684\u65b9\u6848\u3002\u800c\u70ed\u7535\u6280\u672f\u4f5c\u4e3a\u4e00\u79cd\u76f4\u63a5\u4ece\u70ed\u83b7\u53d6\u7535\u529b\u7684\u6280\u672f\uff0c\u5728\u76ee\u524d\u6765\u770b\u662f\u5f88\u6709\u524d\u9014\u800c\u4e14\u73af\u4fdd\u7684\u8282\u80fd\u53d1\u7535\u65b9\u6cd5\u3002\u5176\u4e2d\u70ed\u7535\u6548\u7387\u7531\u5668\u4ef6\u7684\u65e0\u91cf\u7eb2\u6570\u503cZTdev\u51b3\u5b9a\uff0c\u800c\u4f18\u5316\u8fd9\u4e00\u6548\u7387\u9700\u8981\u5728\u5f88\u5bbd\u7684\u6e29\u5ea6\u8303\u56f4\u5185\u5f97\u5230\u6700\u5927\u7684ZT\u503c\u3002<\/p>\n

\u5317\u4eac\u822a\u5929\u822a\u7a7a\u5927\u5b66\u548c\u7f8e\u56fd\u897f\u5317\u5927\u5b66\u7684\u8d75\u7acb\u4e1c\uff08\u901a\u8baf\u4f5c\u8005\uff09\u4ee5\u53ca\u7f8e\u56fd\u897f\u5317\u5927\u5b66Mercouri G. Kanatzidis\uff08\u901a\u8baf\u4f5c\u8005\uff09\u7b49\u4eba\u901a\u8fc7\u7a7a\u7a74\u63ba\u6742\u7852\u5316\u9521\uff08SnSe\uff09\u6676\u4f53\u83b7\u5f97\u4e86\u7834\u7eaa\u5f55\u7684ZTdev\uff0c\u5176\u7ea61.34\uff0c\u6b64\u65f6\u5728300K\u5230773K\u6e29\u5ea6\u8303\u56f4\u5185ZT\u7684\u503c\u57280.7\u52302\u4e4b\u95f4\u3002\u8d85\u9ad8\u7684\u529f\u7387\u56e0\u6570\u5c06\u4f1a\u5e26\u6765\u6027\u80fd\u7684\u663e\u8457\u63d0\u5347\uff0c\u800cSnSe\u4e2d\u7684\u591a\u4e2a\u7535\u5b50\u4ef7\u5e26\u5bfc\u81f4\u7684\u9ad8\u5bfc\u7535\u6027\u548c\u5f3a\u70c8\u589e\u5f3a\u7684\u585e\u8d1d\u514b\u7cfb\u6570\u80fd\u591f\u5e26\u6765\u8d85\u9ad8\u7684\u529f\u7387\u56e0\u6570\u3002\u56e0\u6b64\uff0cSnSe\u53ef\u4ee5\u4f5c\u4e3a\u662f\u4f4e\u6e29\u548c\u4e2d\u6e29\u8303\u56f4\u5185\u5e94\u7528\u4e8e\u80fd\u91cf\u8f6c\u6362\u7684\u7a33\u5065\u7684\u70ed\u7535\u6750\u6599\u5019\u9009\u8005\u4e4b\u4e00\u3002<\/p>\n

\"F4.large\"<\/p>\n

\u6587\u732e\u94fe\u63a5\uff1aUltrahigh power factor and thermoelectric performance in hole-doped single-crystal SnSe<\/a>\u00a0\uff08Science\uff0c2016\uff0cDOI: 10.1126\/science.aad3749\uff09<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

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