New excitonic quasi-particle detected in atomically-thin two-dimensional semiconductors

■ Engineering & Technology / New excitonic quasi-particle detected in atomically-thin two-dimensional semiconductors Yonsei researchers traced the cause of the low photoconversion efficiency in atomically thin two-dimensional semiconductors Professor Hyunyong Choi of Yonsei University School of Electrical and Electronic Engineering and his team of researchers found that when an atomically-thin layer semiconductor absorbs light, a new kind of quasiparticle, an exciton, emerges and reduces the photoconversion efficiency. Like graphene, an atomic layer semiconductor is as thin as an atom, but it is known that its band gap means that the sheet easily absorbs light. < Transient Dynamics of the Intraexcitonic Spectral Weight > An exciton … Continue reading New excitonic quasi-particle detected in atomically-thin two-dimensional semiconductorsRead More →