Stable and Low-Threshold Optical Gain in CdSe/CdS Quantum Dots: An All-Colloidal Frequency Up-Converted Laser

Burak Guzelturk; Yusuf Kelestemur; Kivanc Gungor; Aydan Yeltik; Mehmet Zafer Akgul; Yue Wang; Rui Chen; Cuong Dang; Handong Sun; Hilmi Volkan Demir

doi:10.1002/adma.201500418

Stable and Low-Threshold Optical Gain in CdSe/CdS Quantum Dots: An All-Colloidal Frequency Up-Converted Laser

Adv Mater. 2015 May 6;27(17):2741-6. doi: 10.1002/adma.201500418. Epub 2015 Mar 24.

Authors

Burak Guzelturk¹, Yusuf Kelestemur, Kivanc Gungor, Aydan Yeltik, Mehmet Zafer Akgul, Yue Wang, Rui Chen, Cuong Dang, Handong Sun, Hilmi Volkan Demir

Affiliation

¹ Department of Electrical and Electronics Engineering, Department of Physics, and UNAM-National, Nanotechnology Research Center, Institute of Materials Science and Nanotechnology, Bilkent University, TR-06800, Bilkent, Ankara, Turkey.

PMID: 25807924
DOI: 10.1002/adma.201500418

Abstract

An all-solution processed and all-colloidal laser is demonstrated using tailored CdSe/CdS core/shell quantum dots, which exhibit highly stable and low-threshold optical gain owing to substantially suppressed non-radiative Auger recombination.

Keywords: all solution processed; amplified spontaneous emission; colloidal quantum dots; frequency up-converted lasers; vertical-cavity surface-emitting lasers.