Abstract
Alternating current (AC) electroluminescent diodes were fabricated from MOF-5, a metal organic framework consisting of tetrahedral [Zn4O]6+ units linked by 1,4-benzenedicarboxylate ligands. An additional insulating layer was incorporated to prevent formation of electrical shorts. The electroluminescence spectrum was dramatically red-shifted with respect to the photoluminescence spectrum. By deliberately varying trapped solvent molecules, we demonstrate that the light emission does not originate from MOF-5 but is due to galvanoluminescence, emission of weak optical radiation in the visible region that occurs during anodic oxidation of the Al top electrode in contact with electrolytes.
Original language | English |
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Pages (from-to) | 11045-11048 |
Number of pages | 4 |
Journal | Journal of Physical Chemistry C |
Volume | 120 |
Issue number | 20 |
DOIs | |
Publication status | Published - 26 May 2016 |