Kesterite CZTS nanocrystals: pH-dependent synthesis

被引：23

作者：

Suryawanshi, Mahesh ^{[1
,2
]}

Shin, Seung Wook ^{[3
]}

Bae, Woo R. I. ^{[1
]}

Gurav, Kishor ^{[1
]}

Kang, Myun Gil ^{[1
]}

Agawane, Ganesh ^{[1
]}

Patil, Pramod ^{[2
]}

Yun, Jae Ho ^{[4
]}

Lee, Jeong Yong ^{[3
]}

Moholkar, Annasaheb ^{[2
]}

Kim, Jin Hyeok ^{[1
]}

机构：

[1] Chonnam Natl Univ, Photon Technol Res Inst, Dept Mat Sci & Engn, Kwangju 500757, South Korea

[2] Shivaji Univ, Dept Phys, Thin Film Nanomat Lab, Kolhapur 416004, Maharashtra, India

[3] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

[4] Korea Inst Energy Res, Solar Energy Dept, Taejon 305323, South Korea

来源：

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE | 2014年 / 211卷 / 07期

关键词：

Cu2ZnSnS4 (CZTS); hydrothermal synthesis; solar cells; thin films; FILM SOLAR-CELLS; CU2ZNSNS4; NANOCRYSTALS; EFFICIENCY;

D O I：

10.1002/pssa.201330384

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The kesterite Cu2ZnSnS4 (CZTS) nanocrystals (NCs) were successfully synthesized using a relatively simple and one-step hydrothermal route. The structural, compositional, and optical properties of the kesterite CZTS NCs have been studied in detail. The pH-dependent CZTS phase formation has been elucidated for the first time. The X-ray diffraction and Raman spectroscopy confirmed the formation of a main phase kesterite CZTS structure only at pH 7. However, for pH values (4.3, 5, and 9), the formation of CZTS alongwith few secondary phases like Cu2SnS3 (CTS), Cu2-xS, and SnS2/Sn2S3 have been detected. CZTS NCs of size 10-100 nm were obtained at 200 degrees C and pH 7. The synthesized NCs showed a pH-dependent variation in optical band gap values from 1.15 to 1.44 eV, which is near optimum value for low cost thin film solar cells. (C) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

引用

页码：1531 / 1534

页数：4

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