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CuInS 2 ‐Based Quantum Dot Light‐Emitting Electrochemical Cells (QLECs)
Author(s) -
Frohleiks Julia,
Wefers Fabian,
Wepfer Svenja,
Hong ARa,
Jang Ho Seong,
Nannen Ekaterina
Publication year - 2017
Publication title -
advanced materials technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.184
H-Index - 42
ISSN - 2365-709X
DOI - 10.1002/admt.201700154
Subject(s) - quantum dot , materials science , optoelectronics , nanocrystal , fabrication , brightness , ionic bonding , electrolyte , electrochemistry , colloid , nanotechnology , electrode , optics , ion , chemical engineering , chemistry , physics , medicine , alternative medicine , pathology , organic chemistry , engineering
Quantum dot/electrolyte hybrid light‐emitting devices (QLECs) present a novel class of large‐area light‐emitting devices potentially combining the efficiency, robustness, and color‐tunability of colloidal quantum dots (QDs) with the simple device architecture and easy fabrication of light emitting electrochemical cells. In this work, a Cd‐free QLEC based on CuInS 2 /ZnS (CIS/ZnS) core/shell QDs is presented. The impact of the amount of ionic liquid on the QLEC device performance is systematically studied. The introduction of the additional electron injecting/hole blocking ZnO nanocrystal top layer as well as the proper adjustment of the ionic component leads to CIS‐based QLECs exceeding 350 cd m −2 in brightness.