Efficient CdSe/CdS quantum dot light-emitting diodes using a thermally polymerized hole transport layer

Nano Letters
Jialong ZhaoDavid S Ginger

Abstract

We report multilayer nanocrystal quantum dot light-emitting diodes (QD-LEDs) fabricated by spin-coating a monolayer of colloidal CdSe/CdS nanocrystals on top of thermally polymerized solvent-resistant hole-transport layers (HTLs). We obtain high-quality QD layers of controlled thickness (down to submonolayer) simply by spin-coating QD solutions directly onto the HTL. The resulting QD-LEDs exhibit narrow ( approximately 30 nm, fwhm) electroluminescence from the QDs with virtually no emission from the organic matrix at any voltage. Using multiple spin-on HTLs improves the external quantum efficiency of the QD-LEDs to approximately 0.8% at a brightness of 100 cd/m(2) (with a maximum brightness over 1,000 cd/m(2)). We conclude that QD-LEDs could be made more efficient by further optimization of the organic semiconductors.

References

Jan 4, 1998·Science·S A Empedocles, M G Bawendi
Mar 30, 2002·Science·Wendy U HuynhA Paul Alivisatos
Dec 20, 2002·Nature·Tomoaki KuboToshiro Nagase
Nov 25, 2003·Nature·Eran RabaniLouis E Brus

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Citations

Oct 3, 2013·ACS Applied Materials & Interfaces·My Duyen HoHeeyeop Chae
Apr 6, 2011·Nano Letters·Kai-Yuan ChengRussell J Holmes
Feb 12, 2011·Chemical Communications : Chem Comm·Fu WangDong-ge Ma
Jun 11, 2009·The Journal of Chemical Physics·Jianguang WangKoblar Alan Jackson
Nov 18, 2015·ACS Nano·Zhenyu YangEdward H Sargent
Dec 3, 2015·ACS Applied Materials & Interfaces·Xiaojiao KangDaocheng Pan
Feb 13, 2016·ACS Applied Materials & Interfaces·Heng ZhangShuming Chen
Jul 20, 2010·Ultrasonics Sonochemistry·N Ghows, M H Entezari
May 4, 2010·Ultrasonics Sonochemistry·Mohammad H Entezari, Narjes Ghows
Dec 17, 2015·The Journal of Chemical Physics·Luan FeitozaTertius L Fonseca
Apr 22, 2015·ACS Applied Materials & Interfaces·Jason K CooperJin Z Zhang
Apr 19, 2016·ACS Applied Materials & Interfaces·Qingli LinLin Song Li
May 24, 2016·ACS Applied Materials & Interfaces·Byung-Sung KimJong Min Kim
Aug 9, 2016·Chemical Reviews·Rachel D HarrisEmily A Weiss
Dec 5, 2009·Chemical Reviews·Dmitri V TalapinElena V Shevchenko
Aug 27, 2016·ACS Nano·Shaopeng QiaoReginald M Penner
Mar 9, 2017·ACS Applied Materials & Interfaces·Svenja WepferEkaterina Nannen
Apr 19, 2017·ACS Applied Materials & Interfaces·Zhenhua XingZheng Cui
Nov 2, 2014·Nano Letters·Yong Lin KongMichael C McAlpine
Nov 11, 2006·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Haizhu SunZhi Yuan Wang
Jul 5, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Frank ScholzJosef Wachtveitl
Oct 18, 2011·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·Kotni SanthoshAnunay Samanta
Sep 1, 2012·Advanced Materials·Andrew CarlsonJohn A Rogers
Jan 31, 2019·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Yizhe SunShuming Chen

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