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Updated: Jan 29, 2026

Production and Characterization of Vacuum Deposited Organic Light Emitting Diodes
07:44

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Published on: November 16, 2018

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Low Efficiency Roll-Off and High Current Efficiency Light-Emitting Diode Enabled by Graded CdSe/ZnSe/ZnS Colloidal

Jingjing Qiu1, Yunke Zhu1, Peng Bai1,2

  • 1State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, School of Physics, Peking University, Beijing, China.

Advanced Materials (Deerfield Beach, Fla.)
|January 28, 2026
PubMed
Summary

Colloidal quantum well light-emitting diodes (CQW-LEDs) show promise for displays, but efficiency roll-off is a challenge. This study introduces graded heterostructures in CdSe/ZnSe/ZnS CQWs to significantly suppress roll-off and enhance device performance.

Keywords:
colloidal quantum wellscurrent efficiencyefficiency roll‐offgradient shelllight‐emitting diodes

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