Quaternary alloy quantum dots : toward low-threshold stimulated emission and all-solution-processed lasers in the green region

Quaternary alloy quantum dots : toward low-threshold stimulated emission and all-solution-processed lasers in the green region

Ultra-low threshold stimulated emission is demonstrated upon both one- and two-photon pumping from quaternary alloyed Cd(1−x)ZnxSe(1−y)Sy/ZnS quantum dots (QDs) in the green region for the first time. Moreover, an all-solution-processed whispering gallery mode laser is produced by coating Cd(1−x)Znx...

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Bibliographic Details
Main Authors: Wang, Yue, Yang, Shancheng, Yang, Heesun, Sun, Handong
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2015
Subjects:
DRNTU::Engineering::Electrical and electronic engineering::Optics, optoelectronics, photonics
Online Access:https://hdl.handle.net/10356/106652
http://hdl.handle.net/10220/24995
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Institution: Nanyang Technological University
Language: English
Description
Summary:Ultra-low threshold stimulated emission is demonstrated upon both one- and two-photon pumping from quaternary alloyed Cd(1−x)ZnxSe(1−y)Sy/ZnS quantum dots (QDs) in the green region for the first time. Moreover, an all-solution-processed whispering gallery mode laser is produced by coating Cd(1−x)ZnxSe(1−y)Sy/ZnS QDs on a self-assembled hemisphere. These results represent a significant progress in green lasers and hold great potential in addressing the “green gap” challenge.

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