| 초록 |
Herein, we demonstrate non-destructive electrical doping platform: electron-only-device and hole-only-device, which adopt large band gap charge transport layer for stabilizing extra charge carriers inside QDs. Spectroscopic analysis on QD layer within devices in chorus with electrical characteristics evaluates auger lifetime of negatively and positively charged exciton. In addition, these spectroscopic and electrical changes are all reversed completely. Benefitted from these properties, we observe singly charged exciton photoluminescence dynamics that are well-matched with reported value and superposition principle among multicarrier states in diverse QDs. The demonstrated systems represent a universal tool to generate singly charged exciton in QDs non-destructively. |
