Light-Emitting Diodes with Cu-Doped Colloidal Quantum Wells: From Ultrapure Green, Tunable Dual-Emission to White Light

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Baiquan LiuHilmi Volkan Demir

Abstract

Copper-doped colloidal quantum wells (Cu-CQWs) are considered a new class of optoelectronic materials. To date, the electroluminescence (EL) property of Cu-CQWs has not been revealed. Additionally, it is desirable to achieve ultrapure green, tunable dual-emission and white light to satisfy the various requirement of display and lighting applications. Herein, light-emitting diodes (LEDs) based on colloidal Cu-CQWs are demonstrated. For the 0% Cu-doped concentration, the LED exhibits Commission Internationale de L'Eclairage 1931 coordinates of (0.103, 0.797) with a narrow EL full-wavelength at half-maximum of 12 nm. For the 0.5% Cu-doped concentration, a dual-emission LED is realized. Remarkably, the dual emission can be tuned by manipulating the device engineering. Furthermore, at a high doping concentration of 2.4%, a white LED based on CQWs is developed. With the management of doping concentrations, the color tuning (green, dual-emission to white) is shown. The findings not only show that LEDs with CQWs can exhibit polychromatic emission but also unlock a new direction to develop LEDs by exploiting 2D impurity-doped CQWs that can be further extended to the application of other impurities (e.g., Mn, Ag).

References

Oct 29, 2008·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Shaukatali N InamdarSantosh K Haram
Jul 11, 2009·Journal of the American Chemical Society·Renguo Xie, Xiaogang Peng
Dec 5, 2009·Chemical Reviews·Dmitri V TalapinElena V Shevchenko
Aug 14, 2010·Nano Letters·Vladimir A VlaskinDaniel R Gamelin
Oct 25, 2011·Nature Materials·S IthurriaAl L Efros
Jul 13, 2012·ACS Nano·Mickaël D TessierBenoit Dubertret
Oct 13, 2012·Journal of the American Chemical Society·Benoit MahlerBenoit Dubertret
Dec 18, 2013·Nano Letters·Sergio BrovelliVictor I Klimov
Aug 27, 2014·Advanced Materials·Wan Ki BaeSeonghoon Lee
Nov 5, 2014·Nano Letters·Lucas T KunnemanLaurens D A Siebbeles
Jan 20, 2015·Angewandte Chemie·Ali Hossain KhanSomobrata Acharya
Sep 15, 2015·Optics Express·Ruidong ZhuShin-Tson Wu
Nov 18, 2015·Advanced Materials·Yichuan LingHanwei Gao
Sep 3, 2016·Chemical Reviews·Lihong JingMingyuan Gao
Oct 21, 2017·The Journal of Physical Chemistry Letters·Chuanjiang QinChihaya Adachi

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Citations

Jul 1, 2020·Nanomaterials·Dongxiang LuoBaiquan Liu
Mar 17, 2021·The Journal of Physical Chemistry Letters·Arman NajafiAthos Petrou
Apr 16, 2020·ACS Applied Materials & Interfaces·Junling QuEmmanuel Lhuillier

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