[18a-PB1-1~20] 9.2 Nanoparticles, Nanowires and Nanosheets

[18a-PB1-17] Optical properties of CuInS₂ quantum dots prepared by a hydrothermal method

〇Yota Uehigashi¹, Kazutaka Iida¹, Hideki Ichida², DaeGwi Kim¹ (1.Osaka city Univ., 2.Nippon Bunri Univ.)

Keywords:quantum dot, hydrothermal method

Water-soluble CuInS₂ (CIS) quantum dots (QDs) were hydrothermally prepared, and the optimal hydrothermal synthetic conditions for CIS QDs were investigated. The photoluminescence (PL) quantum yield (QY) of the CIS QDs synthesized under optimal conditions was 4%. CIS/ZnS core/shell QDs were prepared to further increase the PL QY of the CIS QDs. The PL QY was successfully increased to 30%.