Abstract
Semiconductor nanocrystals (NCs) are attracting increasing attention as fluorescent materials. However, many of these materials contain toxic elements (Cd, Pb, Se etc). In this study, to obtain fluorescent NCs without toxic elements, we tried to synthesize CuInS2 NCs. The NCs were successfully obtained by a simple method, i.e., heating organic metal complexes. The photoluminescence (PL) quantum yield obtained was 6 %. The PL spectra suggested that the emission originated from the defect structure of CuInS2. To clarify the relationship between optical property and structure of products, we analyzed the structure of the NCs.
