Heavy Doping by Bromine to Improve the Thermoelectric Properties of n-type Polycrystalline SnSe.
Heavy Doping by Bromine to Improve the Thermoelectric Properties of n-type Polycrystalline SnSe.
复制标题
溴重掺杂改善n型多晶SnSe的热电性能
DOI:
10.1002/advs.201800598
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发表时间:
2018-09
期刊:
影响因子:
--
通讯作者:
Zhang Q
中科院分区:
文献类型:
--
作者:
Li S;Wang Y;Chen C;Li X;Xue W;Wang X;Zhang Z;Cao F;Sui J;Liu X;Zhang Q
Single crystal tin selenide (SnSe) has attracted much attention for its excellent thermoelectric performance. However, polycrystalline SnSe exhibits unsatisfactory figure‐of‐merit due to the inferior electrical properties, especially for n‐type SnSe. In this work, a high concentration of Br doping (6–12 atm%) on the Se site effectively increases the Hall carrier concentration from 1.6 × 1017 cm−3 (p‐type) in undoped SnSe to 1.3 × 1019 cm−3 (n‐type) in Br‐doped SnSe0.88Br0.12, leading to an increased electrical conductivity close to that of a single crystal. Combined with the decreased lattice thermal conductivity due to the enhanced phonon scattering by composition fluctuation and dislocations, a peak ZT of ≈1.3 at 773 K, together with the enhanced average ZT is obtained in SnSe0.9Br0.1 along the hot pressing direction.
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影响因子:
41.2
作者:
Liu, Huili;Shi, Xun;Snyder, G. Jeffrey
通讯作者:
Snyder, G. Jeffrey
影响因子:
64.8
作者:
Biswas, Kanishka;He, Jiaqing;Kanatzidis, Mercouri G.
通讯作者:
Kanatzidis, Mercouri G.
影响因子:
19.6
作者:
Li, C. W.;Hong, J.;Delaire, O.
通讯作者:
Delaire, O.
DOI:
10.1023/a:1008960305097
发表时间:
2000-02-01
影响因子:
2.8
作者:
Agarwal, A;Vashi, MN;Batra, NM
通讯作者:
Batra, NM
影响因子:
64.8
作者:
Zhao, Li-Dong;Lo, Shih-Han;Kanatzidis, Mercouri G.
通讯作者:
Kanatzidis, Mercouri G.