biostudies-literatureUnknown617(7959)Ahn NColloidal 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 developNature79-85https://www.ebi.ac.uk/biostudies/studies/S-EPMC10156592biostudies-literatureElectrically driven amplified spontaneous emission from colloidal quantum dots.PMC10156592Park YSAhn NJin HJung HHahm DPinchetti VKlimov VILivache CfalseElectrically driven amplified spontaneous emission from colloidal quantum dots.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 develop2023-01-01T00:00:00Z2023 May2025-04-04T11:14:27.3Z2025-04-04T11:14:27.3ZS-EPMC101565923713811010.1038/s41586-023-05855-6