Presentation Information
[25p-31B-2]Fabrication of Periodic Array Structures of Semiconductor Quantum Dots and Observation of Quantum Resonance
〇Dai Takayama1, Masahiro Shibuta1, DaeGwi Kim1 (1.Osaka Metropolitan Univ.)
Keywords:
semiconductor quantum dots,quantum dot superlattices,quantum resonance
ZnSe and CdSe quantum dots (QDs) were synthesized using N-acetyl-L-cysteine (NAC) as a ligand with a short length of approximately 0.5 nm. QD assemblies were fabricated by utilizing the amide bonds between NACs. XRD measurements confirmed the periodic structural order of the QDs in the QD assemblies. The extinction peaks in the QD array structures of ZnSe and CdSe were shifted to the lower-energy side compared with the absorption peaks of the isolated QDs, which demonstrates the occurrence of the quantum resonance between the adjacent QDs. The method proposed in this study will be suitable for fabricating periodic array structures of QDs employing NAC as a ligand. Furthermore, this method can be extended to the periodic array structures prepared using metal, dielectric, and magnetic nanoparticles (NPs), and a hybrid structure formed by combining various types of NPs, and it is not limited only to semiconductor QDs.