Figure 5From: Investigation of bulk hybrid heterojunction solar cells based on Cu(In,Ga)Se2 nanocrystalsFTIR of CIGS NCs (a) and I-V characteristics of photovoltaic devices (b) with and without pyridine treatment. (a) CIGS NCs unrefluxed and refluxed by pyridine; (b) photovoltaic devices with and without pyridine treatment. (OLA, oleylamine; PYR, pyridine).Back to article page