Premium
Synthesis of kesterite nanopowders with bandgap tuning ligands
Author(s) -
Podsiadlo Slawomir,
Bialoglowski Maciej,
Fadaghi Mohammad,
Matyszczak Grzegorz,
Kardas Kornelia,
Dluzewski Piotr,
Data Przemyslaw,
Lapkowski Mieczyslaw
Publication year - 2015
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201500044
Subject(s) - kesterite , oleylamine , band gap , diphenylamine , materials science , tandem , czts , photovoltaic system , nanocrystal , chemical engineering , nanotechnology , optoelectronics , metallurgy , composite material , ecology , biology , engineering
A rapid development of solar cells has been observed within recent years. Semiconducting materials based on Cu 2 ZnSnS 4 with the kesterite structure offer a promise of low‐cost and environmentally friendly solar cells. The energy gap of Cu 2 ZnSnS 4 , which is about 1.5 eV, can be optimized with addition of organic ligands. We report a method of obtaining kesterite nanopowders with grain diameter of approximately 5 nm via solution synthesis using metal chlorides and sulfur in oleylamine at 230 °C. The ligand exchange for diphenylamine upshifted the value of the bandgap to 2.2 eV, which makes it a promising material for an upper layer in tandem photovoltaic devices.