title: High extractive single-photon emissions from InGaAs quantum dots on a GaAs pyramid-like multifaceted structure.
abstract: This work investigates the single-photon emissions from self-assembled InGaAs quantum dots that are grown on an apex plane of a GaAs pyramid-like multifaceted structure. The number of QDs on a multifaceted structure is estimated by scanning electron microscopy. Single-exciton emissions from individual quantum dots are examined by micro-photoluminescence and by making photon correlation measurements. This experiment demonstrates the improvement of the single-photon extraction efficiency as quantum dots are grown on a reduced apex plane of a multifaceted structure.
authors.affiliation: Department of Physics and Center for Nano Science and Technology, National Central University, Jhong-li 32001, Taiwan, Republic of China.
authors.forename: Hsiang-Szu
authors.initials: HS
authors.lastname: Chang
authors.forename: Chieh-Ming
authors.initials: CM
authors.lastname: Hsu
authors.forename: Wen-Yen
authors.initials: WY
authors.lastname: Chen
authors.forename: Tung-Po
authors.initials: TP
authors.lastname: Hsieh
authors.forename: Jen-Inn
authors.initials: JI
authors.lastname: Chyi
authors.forename: Tzu Min
authors.initials: TM
authors.lastname: Hsu