Meeree Kim, Junho Lee, Jaegwan Jung, Daekwon Shin, Jugyoung Kim, Eunhye Cho, Yaolong Xing, Hyeonjun Jeong, Seongmin Park, Sang Ho Oh, Yong-Hyun Kim, Sohee Jeong
While the shape-dependent quantum confinement (QC) effect in anisotropic semiconductor nanocrystals has been extensively studied, the QC in facet-specified polyhedral quantum dots (QDs) remains underexplored. Recently, tetrahedral nanocrystals have gained prominence in III-V nanocrystal synthesis. In our study, we successfully synthesized well-faceted tetrahedral InAs QDs with a first excitonic absorption extending up to 1700 nm. We observed an unconventional sizing curve, indicating weaker confinement than for equivalently volumed spherical QDs...
April 8, 2024: Journal of the American Chemical Society