Attempting to realize n-type BiCuSeO

Zhang, Xiaoxuan1; Feng, Dan2; He, Jiaqing2; Zhao, Li-Dong1

2018-02

10.1016/j.jssc.2017.11.012

JOURNAL OF SOLID STATE CHEMISTRY   影响因子和分区

0022-4596

1095-726X

As an intrinsic p-type semiconductor, BiCuSeO has been widely researched in the thermoelectric community, however, n-type BiCuSeO has not been reported so far. In this work, we successfully realized n-type BiCuSeO through carrying out several successive efforts. Seebeck coefficient of BiCuSeO was increased through introducing extra Bi/Cu to fill the Bi/Cu vacancies that may produce holes, and the maximum Seebeck coefficient was increase from +447 mu VK-1 for undoped BiCuSeO to +638 mu VK-1 for Bi1.04Cu1.05SeO. The Seebeck coefficient of Bi1.04Cu1.05SeO was changed from p-type to n-type through electron doping through introducing Br/I in Se sites, the maximum negative Seebeck coefficient can reach similar to-465 mu VK-1 and -543 mu VK-1 for Bi1.04Cu1.05Se1-xIxO and Bi1.04Cu1.05Se1-xBrxO, respectively. Then, after compositing Bi1.04Cu1.05Se0.99Br0.01O with Ag, n-type BiCuSeO can be absolutely obtained in the whole temperature range of 300-873 K, the maximum ZT similar to 0.05 was achieved at 475 K in the Bi1.04Cu1.05Se0.99Br0.01O+15% Ag. Our report indicates that it is possible to realize n-type conducting behaviors in BiCuSeO system.

N-type BiCuSeO Thermoelectric Electrical conductivity Seebeck coefficient Thermal conductivity

SCI ; EI

英语

其他

Shenzhen Peacock Plan team[KQTD2016022619565911]

Chemistry

Chemistry, Inorganic & Nuclear ; Chemistry, Physical

WOS:000423650400066

ACADEMIC PRESS INC ELSEVIER SCIENCE

20174804458406

Bismuth compounds ; Bromine compounds ; Copper compounds ; Seebeck coefficient ; Selenium compounds ; Semiconducting bismuth compounds ; Semiconducting selenium compounds ; Semiconductor doping ; Silver compounds ; Thermal conductivity

Thermoelectric Energy:615.4 ; Thermodynamics:641.1 ; Semiconducting Materials:712.1 ; Compound Semiconducting Materials:712.1.2

CHEMISTRY

Web of Science

1.Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
2.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Zhang, Xiaoxuan,Feng, Dan,He, Jiaqing,et al. Attempting to realize n-type BiCuSeO[J]. JOURNAL OF SOLID STATE CHEMISTRY,2018,258:510-516.

Zhang, Xiaoxuan,Feng, Dan,He, Jiaqing,&Zhao, Li-Dong.(2018).Attempting to realize n-type BiCuSeO.JOURNAL OF SOLID STATE CHEMISTRY,258,510-516.

Zhang, Xiaoxuan,et al."Attempting to realize n-type BiCuSeO".JOURNAL OF SOLID STATE CHEMISTRY 258(2018):510-516.