首页|High-speed flexible near-infrared organic photodiode for optical communication
High-speed flexible near-infrared organic photodiode for optical communication
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Optical communication is a particularly compelling technology for tackling the speed and capacity bottlenecks in data communication in modern society.Currently,the silicon photodetector plays a dominant role in high-speed optical communication across the visible-near-infrared spectrum.However,its intrinsic rigid structure,high working bias and low responsivity essentially limit its application in next-generation flexible optoelectronic devices.Herein,we report a narrow-bandgap non-fullerene acceptor(NFA)with a remarkable π-extension in the direction of both central and end units(CH17)with respect to the Y6 series,which demonstrates a more effective and compact 3D molecular packing,leading to lower trap states and energetic disorders in the photoactive film.Consequently,the optimized solution-processed organic photodetector(OPD)with CH 17 exhibits a remarkable response time of 91 ns(λ=880 nm)due to the high charge mobility and low parasitic capacitance,exceeding the values of most commercial Si photodiodes and all NFA-based OPDs operating in self-powered mode.More significantly,the flexible OPD exhibits negligible performance attenuation(＜1％)after bending for 500 cycles,and maintains 96％of its initial performance even after 550 h of indoor exposure.Furthermore,the high-speed OPD demonstrates a high data transmission rate of 80 MHz with a bit error rate of 3.5 x 10-4,meaning it has great potential in next-generation high-speed flexible optical communication systems.
The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials,Institute of Polymer Chemistry,Tianjin Key Laboratory of Functional Polymer Materials,College of Chemistry,and Renewable Energy Conversion and Storage Center(RECAST),Nankai University,Tianjin 300071,China
State Key Laboratory of Elemento-Organic Chemistry,Nankai University,Tianjin 300071,China
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