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A flexible, multifunctional, optoelectronic anticounterfeiting device from high-performance organic light-emitting
Teng Pan1, Shihao Liu1, Letian Zhang1
1State Key Laboratory of Integrated Optoelectronics, College of Electronics Science and Engineering, Jilin University, 130012, Changchun, China.
Light, Science & Applications
|March 15, 2022
Summary
Researchers developed a flexible anticounterfeiting device using organic light-emitting paper. This novel technology offers enhanced security through multiple stimuli-responsiveness, including light and electricity.
Area of Science:
- Materials Science
- Optoelectronics
- Security Technology
Background:
- Traditional paper anticounterfeiting methods have low-security thresholds due to reliance on simple photoresponsive behaviors.
- Integrating optoelectronic devices offers a promising approach to enhance anticounterfeiting capabilities.
- Existing security features on paper often limit the integration of advanced technologies.
Purpose of the Study:
- To develop a high-performance, flexible anticounterfeiting device based on organic light-emitting paper.
- To create a multi-stimuli-responsive system incorporating light, electricity, and their combined effects.
- To achieve facile, low-cost, and high-fidelity fabrication without compromising pre-existing security information.
Main Methods:
- Fabrication of an organic light-emitting paper-based flexible anticounterfeiting (FAC) device.
- Integration of patterned electro-responsive and photo-responsive organic emitters onto paper substrates.
- Incorporation of optical microcavities to induce angle- and voltage-dependent color shifts.
Main Results:
- The FAC device exhibits multiple stimuli-responsiveness (light, electricity, combined).
- Significant color shifts observable by the naked eye were achieved with varying viewing angles and applied voltages.
- The device demonstrated excellent flexibility, unclonability, and durability with a half-lifetime exceeding 4000 hours.
Conclusions:
- The developed organic light-emitting paper-based FAC device offers a robust and advanced anticounterfeiting solution.
- The multi-stimuli-responsive nature and visual distinctiveness enhance security against counterfeiting.
- The facile fabrication process and material durability make it suitable for widespread application.
