[15a-2D-1~8] 4.6 Nanocarbon and 2D materials photonics

▲ [15a-2D-4] Optical properties of Cu₂ZnSnS₄ decorated reduced graphene oxide nanocomposites

〇(PC)Thangaraju Dheivasigaman¹, Karthikeyan Rajan², Prakash Natarajan², Tadanobu Koyama¹, Yasuhiro Hayakawa^1,2 (1.RIE, Shizuoka university, 2.GSST, Shizuoka university)

Keywords:Nanocomposite,Quaternary chalcogenide semiconductors,Photodetector

Reduced graphene oxide (rGO) was synthesized by an improved Hummers method and were used for nanoparticle growth on surface. Cu₂ZnSnS₄ (CZTS) nanoparticles were synthesized in presence of reduced graphene oxide (rGO) by the precursor injection method using oleylamine as a solvent. Preliminary characterizations indicated that the synthesized CZTS/rGO belonged to the kesterite structure without any impurity phases with a bulged sphere-like morphology. Tuned absorption of the pure CZTS was observed by the decoration of CZTS nanoparticles on the surface of rGO in the visible and UV regions.