期刊
ACS NANO
卷 4, 期 2, 页码 637-642出版社
AMER CHEMICAL SOC
DOI: 10.1021/nn9018569
关键词
graphene; light-emitting device; polymer; light-emitting electrochemical cell; electroluminescence
类别
资金
- Swedish Research Council
- Knut and Alice Wallenberg Foundation
- National Science Foundation [ECS 0543867]
- Donald H. Jacobs Chair
- Royal Society International
- Royal Society's Wolfson Merit Award
- Centre for Advanced Structural Ceramics (CASC) at Imperial
- EPSRC [EP/F033605/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/F033605/1] Funding Source: researchfish
The emerging field of organic or plastic electronics has brought low-voltage, ultrathin, and energy-efficient lighting and displays to market as organic light-emitting diode (OLED) televisions and displays in cameras and mobile phones. Despite using carbon-based materials as the light-emitting layer, previous efficient organic electronic light-emitting devices have required at least one metal electrode. Here, we utilize chemically derived graphene for the transparent cathode in an all-plastic sandwich-structure device, similar to an OLED, called a light-emitting electrochemical cell (LEC). Using a screen-printable conducting polymer as a partially transparent anode and a micro meter-thick active layer solution-deposited from a blend of a light-emitting polymer and a polymer electrolyte, we demonstrate a light-emitting device based solely on solution-processable carbon-based materials. Our results demonstrate that low-voltage, inexpensive, and efficient light-emitting devices can be made without using metals. In other words, electronics can truly be organic.
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