Hydrazine-Free Solution-Deposited CuIn(S,Se)2 Solar Cells by Spray Deposition of Metal Chalcogenides

Marinus Van Hest, Panagiota Arnou, Carl Cooper, Andrei Malkov, John Walls, Jake Bowers

Research output: Contribution to journalArticlepeer-review

38 Scopus Citations


Solution processing of semiconductors, such as CuInSe2 and its alloys (CIGS), can significantly reduce the manufacturing costs of thin film solar cells. Despite the recent success of solution deposition approaches for CIGS, toxic reagents such as hydrazine are usually involved, which introduce health and safety concerns. Here, we present a simple and safer methodology for the preparation of high-quality CuIn(S, Se)2 absorbers from metal sulfide solutions in a diamine/dithiol mixture. The solutions are sprayed in air, using a chromatography atomizer, followed by a postdeposition selenization step. Two different selenization methods are explored resulting in power conversion efficiencies of up to 8%.
Original languageAmerican English
Pages (from-to)11893-11897
Number of pages5
JournalACS Applied Materials and Interfaces
Issue number19
StatePublished - 2016

NREL Publication Number

  • NREL/JA-5K00-66525


  • atmospheric process
  • chalcopyrite
  • CIGS
  • solar cells
  • thin film


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