p型多晶Bi0.5Sb1.5Te3合金类施主效应与热电性能

p型多晶Bi_0.5Sb_1.5Te₃合金类施主效应与热电性能

鲁志强, 刘可可, 李强, 胡芹, 冯利萍, 张清杰, 吴劲松, 苏贤礼, 唐新峰

Donor-like Effect and Thermoelectric Performance in p-Type Bi_0.5Sb_1.5Te₃ Alloy

LU Zhiqiang, LIU Keke, LI Qiang, HU Qin, FENG Liping, ZHANG Qingjie, WU Jinsong, SU Xianli, TANG Xinfeng

表1 不同气氛处理粉体烧结样品室温下的取向因子(F)、电导率(σ)、Seebeck系数(S)、载流子浓度(n)、迁移率(μ)、总热导率(κ)、有效质量(m^*/m₀)、热电优值ZT以及平均热电优值ZT_ave

Table 1 Orientation factor (F), conductivity (σ), Seebeck coefficient (S), carrier concentration (n), mobility (μ), total thermal conductivity(κ), effective mass (m^*/m₀), and thermoelectric value ZT of the samples treated with different atmospheres at room temperature and average thermoelectric value ZT_ave

Sample	F	σ/(×10⁴, S•m⁻¹)	S/(μV•K⁻¹)	n/(×10¹⁹, cm⁻³)	μ/(cm²•V⁻¹•s⁻¹)	κ/(W•m⁻¹•K⁻¹)	m^/m*₀	ZT	ZT_ave
In-Ar	0.076	17.50	150	4.49	243	1.49	0.93	0.78	0.92
Out-Ar	0.074	15.55	160	3.88	249	1.45	0.91	0.82	0.86
In-Air	0.078	12.92	172	3.31	243	1.28	0.89	0.90	0.81
Out-Air	0.072	12.36	177	3.21	240	1.23	0.89	0.94	0.87