Effect of injection rate on the growth of Cu2ZnSnS4 nanoparticles synthesized by hot injection method

Author

Mao-Cheng Huang ; Shih-Yuan Wei ; Chia-Hao Hsu ; Wei-Hao Ho ; Yue-Shun Su ; Chih-Huang Lai

Author_Institution

Dept. of Mater. Sci. & Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan

fYear

2013

fDate

16-21 June 2013

Abstract

In this study, we have obtained uniform and high quality Cu₂ZnSnS₄ (CZTS) nanocrystals which were synthesized by using the hot injection method. The effect of injection rate on growth mechanism was investigated. The injection rates were varied from 2.5 to 20mL/h. The CZTS nanocrystals were characterized by TEM, XRD, and Raman. The Raman spectrum revealed good crystallinity, and TEM images showed uniform dispersion. As the injection rates increased, the CZTS particles size become larger and less uniform, which was consistent with LaMer model. The composition of CZTS nanocrystals was almost close to stoichiometry, and we obtained the CZTS nanoparticles with good crystallinity for the case injected at 10mL/h.

Keywords

Raman spectra; X-ray diffraction; copper compounds; nanoparticles; nanostructured materials; semiconductor thin films; solar cells; sulphur compounds; tin compounds; transmission electron microscopy; zinc compounds; CZTS nanocrystals; CZTS nanoparticles; CZTS particles; Cu₂ZnSnS₄; Raman spectrum; TEM; TEM images; XRD; crystallinity; growth mechanism; hot injection method; injection rate effect; stoichiometry; thin film solar cells; Nanocrystals; Photovoltaic cells; Raman scattering; System-on-chip; X-ray scattering; Cu2ZnSnS4; Growth mechanism; Hot injection; LaMer model; Raman spectrum;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2013 IEEE 39th

Conference_Location

Tampa, FL

Type

conf

DOI

10.1109/PVSC.2013.6744172

Filename

6744172