Solvent-Induced Galvanoluminescence of Metal–Organic Framework Electroluminescent Diodes
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- 作者：Haonan Huang ; Michelle Beuchel ; Yeseul Park ; Patrick J. Baesjou ; Stefan C. J. Meskers ; Dago M. de Leeuw ; Kamal Asadi
- 刊名：Journal of Physical Chemistry C
- 出版年：2016
- 出版时间：May 26, 2016
- 年：2016
- 卷：120
- 期：20
- 页码：11045-11048
- 全文大小：266K
- 年卷期：0
- ISSN：1932-7455
文摘
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.