A non-toxic, solution-processed, earth abundant absorbing layer for thin-film solar cells

Kyoohee Woo, Youngwoo Kim, Jooho Moon

Research output: Contribution to journalArticlepeer-review

237 Citations (Scopus)


Copper zinc tin sulfide (Cu 2ZnSnS 4, CZTS) has attracted significant attention in the past few years as a next generation absorber material for the production of thin film solar cells on large scales due to the high natural abundance of all constituents, tunable direct band gap energy ranging from 1.0 to 1.5 eV, and large absorption coefficient. In addition, to address the issue of expensive vacuum-based processes, non-vacuum solution-based approaches are being developed for CZTS absorber layer deposition. Here, we demonstrate the fabrication of a high quality CZTS absorber layer with a thickness of 2.8-3.0 μm and micrometre-scaled grains (1-2.5 μm) using air-stable non-toxic solvent-based inks. Our approach for the fabrication of CZTS absorber, reported here, will be the first step in achieving low-cost and large area solar cells with high efficiency.

Original languageEnglish
Pages (from-to)5340-5345
Number of pages6
JournalEnergy and Environmental Science
Issue number1
Publication statusPublished - 2012 Jan

All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Renewable Energy, Sustainability and the Environment
  • Nuclear Energy and Engineering
  • Pollution


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