Room temperature non-vacuum preparation of nanocrystalline CuInSe 2 employing aqueous solvents

Christopher L. Exstrom, Scott A. Darveau, Matt A. Ingersoll, Matthew R. Jensen, Chelsey Cook, Laura E. Slaymaker, Rodney J. Soukup, Natale J. Lanno

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new room-temperature, aqueous solution-based preparation method for chalcopyrite CuInSe2 has been developed. Using 10% aqueous ethylenediamine as a solvent, the slow addition of Cu(NO3) 2 to a mixture of indium(III) acetate, elemental Se, and sodium thioglycolate results in the formation of CuInSe2 as characterized by Raman spectroscopy. During this reaction, a kinetically-stable Cu 2-xSe(s) intermediate initially forms followed by slow conversion to CuInSe2 that likely involves a direct Cu2-xSe + In 2Se3 solid-state reaction. The ethylenediamine in the reaction mixture acts as a complexing agent, establishing equilibria that can be in competition with Cu2-xSe(s) formation, limiting particle size and accelerating rates of reaction with In. Over several hours, the CuInSe 2 material undergoes a phase decomposition that can be reversed by annealing at 550 °C. Attempts to prepare CuIn1-xGa xSe2 and CuGaSe2 via this method result primarily in CuInSe2 and Cu2-xSe products, respectively, with nearly all gallium staying in the solution phase.

Original languageEnglish (US)
Title of host publicationProgram - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010
Pages3403-3406
Number of pages4
DOIs
Publication statusPublished - Dec 20 2010
Event35th IEEE Photovoltaic Specialists Conference, PVSC 2010 - Honolulu, HI, United States
Duration: Jun 20 2010Jun 25 2010

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Other

Other35th IEEE Photovoltaic Specialists Conference, PVSC 2010
CountryUnited States
CityHonolulu, HI
Period6/20/106/25/10

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ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Cite this

Exstrom, C. L., Darveau, S. A., Ingersoll, M. A., Jensen, M. R., Cook, C., Slaymaker, L. E., ... Lanno, N. J. (2010). Room temperature non-vacuum preparation of nanocrystalline CuInSe 2 employing aqueous solvents. In Program - 35th IEEE Photovoltaic Specialists Conference, PVSC 2010 (pp. 3403-3406). [5614656] (Conference Record of the IEEE Photovoltaic Specialists Conference). https://doi.org/10.1109/PVSC.2010.5614656