Electrically driven amplified spontaneous emission from colloidal quantum dots.

ABSTRACT: Colloidal quantum dots (QDs) are attractive materials for realizing solution-processable laser diodes that could benefit from size-controlled emission wavelengths, low optical-gain thresholds and ease of integration with photonic and electronic circuits^1-7. However, the implementation of such devices has been hampered by fast Auger recombination of gain-active multicarrier states^1,8, poor stability of QD films at high current densities^9,10 and the difficulty to obtain net optical gain in a complex device stack wherein a thin electroluminescent QD layer is combined with optically lossy charge-conducting layers^11-13. Here we resolve these challenges and achieve amplified spontaneous emission (ASE) from electrically pumped colloidal QDs. The develop

SUBMITTER: Ahn N 

PROVIDER: S-EPMC10156592 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature