CuInS2-Based Quantum Dot Light-Emitting Electrochemical Cells (QLECs)
- CuInS2-Based Quantum Dot Light-Emitting Electrochemical Cells (QLECs)
- 장호성; 홍아라; Julia Frohleiks; Fabian Wefers; Svenja Wepfer; Ekaterina Nannen
- CuInS2; light-emitting electrochemical cells; quantum dots
- Issue Date
- Advanced materials technologies
- VOL 2, NO 11-1700154-8
- 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 CuInS2/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.
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