Color-Switchable Electroluminescence of Carbon Dot Light-Emitting Diodes
Source abstract
Abstract
Carbon-dot based light-emitting diodes (LEDs) with driving current controlled color change are reported. These devices consist of a carbon-dot emissive layer sandwiched between an organic hole transport layer and an organic or inorganic electron transport layer fabricated by a solution-based process. By tuning the device structure and the injecting current density (by changing the applied voltage), we can obtain multicolor emission of blue, cyan, magenta, and white from the same carbon dots. Such a switchable EL behavior with white emission has not been observed thus far in single emitting layer structured nanomaterial LEDs. This interesting current density-dependent emission is useful for the development of colorful LEDs. The pure blue and white emissions are obtained by tuning the electron transport layer materials and the thickness of electrode.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Carbon and Quantum Dots Applications · Luminescence and Fluorescent Materials · Organic Light-Emitting Diodes Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory on Integrated Optoelectronics and College of Electronic Science and Engineering, Jilin University, Changchun, Jilin 130012, China
Department of Physics and Materials Science and Centre for Functional Photonics, City University of Hong Kong, Kowloon, Hong Kong SAR
State Key Laboratory of Superhard Materials and College of Physics, Jilin University, Changchun, Jilin 130012, China
College of Material Science and Engineering, Qingdao University of Science and Technology, Qingdao, Shandong 266042, China
Department of Chemistry and Physics, Louisiana State University, Shreveport, Louisiana 71115, United States
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