Preparation of basic CuInSe2 nanoparticles in the solution system of Cu+-In3+-Se2--NH3-L2--Cl--H2O

Shi Na Li, Rui Xin Ma, Chun Hong Ma, Kai Huang, Jian Wen Niu, Hong Min Zhu

Research output: Contribution to journalArticle

Abstract

According to the principles of simultaneous equilibria and mass equilibria, CuInSe2(CIS) were prepared by total aqueous process at normal pressure and room temperature. A series of thermodynamic equilibrium equations were deduced for the complex system of Cu+-In3+-Se2--NH3-L2--Cl--H2O (T=298 K), and the equilibrium curves of lgc-pH were drawn. It was found from these equilibrium diagrams that [NH3]T primarily affected the [Cu+]T concentration, [L2-]T influenced the [In3+]Tconcentration, and [Cl-]T had impact on both. The highest precipitation coefficient was obtained at pH 7.0-8.5. As a result, based on the principles of simultaneous equilibria and mass equilibria of the Cu+-In3+-Se2--NH3-L2--Cl--H2O system (T=298 K) and used total aqueous process at normal pressure and room temperature, CIS nanoparticles can be synthesized by adjusting the pH value to 7.0-8.5, and their size is about 20 to 50 nm.

Original languageEnglish
Pages (from-to)1036-1043
Number of pages8
JournalGongcheng Kexue Xuebao/Chinese Journal of Engineering
Volume37
Issue number8
DOIs
Publication statusPublished - 2015 Aug 1
Externally publishedYes

Keywords

  • Copper indium selenide
  • Nanoparticles
  • Thin film solar cells
  • pH values

ASJC Scopus subject areas

  • Engineering(all)

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