Effect of Precursor Solution Aging on the Thermoelectric Performance of CsSnI3 Thin Film

被引：24

作者：

Baranwal, Ajay Kumar ^{[1
]}

Saini, Shrikant ^{[2
]}

Wang, Zhen ^{[3
]}

Hamada, Kengo ^{[3
]}

Hirotani, Daisuke ^{[3
]}

Nishimura, Kohei ^{[1
]}

Kamarudin, Muhammad Akmal ^{[1
]}

Kapil, Gaurav ^{[1
,5
]}

Yabuki, Tomohide ^{[2
]}

Iikubo, Satoshi ^{[3
]}

Shen, Qing ^{[4
]}

Miyazaki, Koji ^{[2
]}

Hayase, Shuzi ^{[1
]}

机构：

[1] Univ Electrocommun, I Powered Energy Syst Res Ctr, Chofu, Tokyo, Japan

[2] Kyushu Inst Technol, Dept Mech Engn, Kitakyushu, Fukuoka, Japan

[3] Kyushu Inst Technol, Grad Sch Life Sci & Syst Engn, Kitakyushu, Fukuoka, Japan

[4] Univ Electrocommun, Grad Sch Informat & Engn, Chofu, Tokyo, Japan

[5] Univ Tokyo, Res Ctr Adv Sci & Technol, Tokyo, Japan

来源：

JOURNAL OF ELECTRONIC MATERIALS | 2020年 / 49卷 / 05期

关键词：

Perovskite; CsSnI3; thermoelectric film; precursor solution aging; SOLAR-CELLS; THERMAL-CONDUCTIVITY; HALIDE PEROVSKITES; SEMICONDUCTOR; LENGTHS; GROWTH;

D O I：

10.1007/s11664-019-07846-8

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Inorganic CsSnI3 based perovskite crystals are interesting thermoelectric materials, owing to their unusual electronic properties. Here we report the thermoelectric power performance of a solution-coated CsSnI3 thin film from the viewpoint of carrier concentration optimizations. It was found that the carrier concentration can be changed by altering the aging time of the precursor solution. X-ray photoelectron spectroscopy analysis showed that the concentration of metallic Sn4+ increased as the solution aging time increased. This made possible to explore the relationship between carrier concentration and thermoelectric power factor. After controlling Sn4+ concentrations, we report a power factor of 145.10 mu W m(-1) K-2 , along with electrical conductivity 106 S/cm and Seebeck coefficient of 117 mu V/K, measured at room temperature.

引用

页码：2698 / 2703

页数：6

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