Structural and optical properties of CZTS nanoparticles prepared by a colloidal process

被引：19

作者：

Aruna-Devi, R. ^{[1
,2
]}

Latha, M. ^{[1
,2
]}

Velumani, S. ^{[1
,3
]}

Alvaro Chavez-Carvayar, Jose ^{[4
]}

机构：

[1] CINVESTAV IPN, Program Nanosci & Nanotechnol, Mexico City 07360, DF, Mexico

[2] CIICAp UAEM, Av Univ 1001, Cuernavaca 62209, Morelos, Mexico

[3] CINVESTAV IPN, Dept Elect Engn SEES, Mexico City 07360, DF, Mexico

[4] Univ Nacl Autonoma Mexico, Inst Invest Mat, Mexico City 04510, DF, Mexico

来源：

RARE METALS | 2021年 / 40卷 / 09期

关键词：

CZTS; Copper concentration; Nanoparticles; Thin film; Annealing; CU2ZNSNS4; SOLAR-CELLS; THIN-FILMS; STEP SYNTHESIS; NANOCRYSTALS;

D O I：

10.1007/s12598-019-01288-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This research presents the influence of copper (Cu) concentration on the properties of copper zinc tin sulfide (CZTS) nanoparticles (NPs) synthesized by a colloidal method, employing oleylamine as an organic solvent. From the structural analysis, a pure phase of CZTS was obtained at an optimized molar ratio of 1.8:1.1:1:4, and secondary phases were observed as the Cu concentration increased. The increment of the NPs size from 15 to 50 nm was noticed as a function of Cu concentration. Importantly, the optical bandgap energy was tuned from 1.35 to 1.68 eV with respect to Cu concentration. The sample synthesized at the molar ratio of 1.8:1.1:1:4 showed a pure phase CZTS with desired elemental composition and bandgap. Furthermore, CZTS thin films were prepared by a doctor-blade method using synthesized NPs followed by annealing under a sulfur/nitrogen atmosphere. The annealed CZTS film showed a significant improvement in the morphological, electrical and optoelectronic properties. Thus, the annealed CZTS film can be efficiently used as an absorber layer in low-cost thin film solar cells.

引用

页码：2602 / 2609

页数：8

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