QQ客服 官方微博 反馈留言

	Thermoelectric enhancement at low temperature in nonstoichiometric lead-telluride compounds
	Heng Wang ; Jing-Feng Li ; Kita, T.
	2010-10-12 ; 2010-10-12
关键词	Experimental/ lead compounds thermal conductivity thermoelectricity transmission electron microscopy/ thermoelectric polycrystalline materials mechanical alloying spark plasma sintering thermoelectric figure of merit thermal conductivity Pb/sub 1.7/Te/ A7220P Thermoelectric effects (semiconductors/insulators) A7280 Electrical conductivity of specific semiconductors and insulators/ Pb1.7Te/bin Pb1.7/bin Pb/bin Te/bin
中文摘要	Pb/sub 1.17/Te thermoelectric polycrystalline materials were fabricated by mechanical alloying (MA) and spark plasma sintering (SPS). The property measurement and microstructural characterization showed that the present material has special features different from traditional Pb/sub 1+//sub x/Te ingots with secondary Pb phase. An attractive enhancement of the thermoelectric figure of merit ZT = 0.64 was obtained at 450 K, with a low thermal conductivity of 1.11 W m/sup -1/ K/sup -1/ at this temperature. Transmission electron microscopy observation showed the existence of randomly dispersed nano features that are responsible for such enhancement, some of which are similar to the nanostructures reported in the AgPb/sub m/SbTe/sub m+2/ system. The origin of these regions is discussed and their influence on thermal conductivity is revealed. The results confirm the effectiveness of such a kind of nano feature in improving thermoelectric properties, especially in reducing thermal conductivity. They also indicate a new way of obtaining thermoelectric materials with such a kind of nano feature via MA and SPS.
语种	英语
出版者	IOP Publishing Ltd. ; UK
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/78179]
专题	清华大学
推荐引用方式 GB/T 7714	Heng Wang,Jing-Feng Li,Kita, T.. Thermoelectric enhancement at low temperature in nonstoichiometric lead-telluride compounds[J],2010, 2010.
APA	Heng Wang,Jing-Feng Li,&Kita, T..(2010).Thermoelectric enhancement at low temperature in nonstoichiometric lead-telluride compounds..
MLA	Heng Wang,et al."Thermoelectric enhancement at low temperature in nonstoichiometric lead-telluride compounds".(2010).

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。