Research On GaN-based Integrated Optoelectronic Chip For Energy,Communication And Perception

In the past 20 years,people have been searching for new lighting sources.With the development of technology,people’s expectations for lighting have expanded beyond providing basic lighting functions.They now hope that lighting systems can provide more intelligent and personalized choices.With the development of third-generation semiconductor materials,gallium nitride(GaN)materials have gone from laboratory research to commercial application through the efforts of scientists such as Hiroshi Amano and Isamu Akasaki.GaN-based optoelectronic devices have advantages such as low energy consumption,high efficiency,low cost,and long lifespan,making them suitable for use in lighting,detection,and other scenarios.The idea of using GaN optoelectronic devices for visible light communication(VLC)has also attracted attention and research.Based on this background,combined with the physical phenomenon that there is an overlapping region between the emission spectrum and the detection spectrum of GaN/In GaN multi-quantum well diodes,it is concluded that the diode can detect the light emitted by the diode with the same quantum well structure as itself,and the multi-quantum well diode Well light-emitting diodes can be used as both light emitters and photodetectors.In this paper,a compatible design process is adopted to integrate a light-emitting diode(LED,Light Emitting Diode),a photodetector device and a photovoltaic device on the same GaN chip,and a GaN-based green light energy communication perception integrated optoelectronic chip for visible light communication is prepared..And its morphology characterization,optical / electrical performance characterization.In order to verify that the chip has simultaneous light-emitting detection capability,this paper uses two identical GaN optoelectronic chips as the transmitter and receiver respectively to build an optical communication link.and audio signals.In addition,this paper also uses the chip to carry out relay communication experiments,and uses the modulated external laser light source to remotely irradiate the GaN-based energy communication perception integrated optoelectronic chip.The photovoltaic device in the chip collects the energy of the laser and converts it into electrical energy to drive The LED device emits light,and the photodetector in the chip receives the optical signal of the laser and converts it into an electrical signal and loads it on the LED,and then transmits the signal in the form of an optical signal.Experiments have confirmed the excellent performance of the chip integrating energy,communication,and perception.Based on this feature,this paper uses the chip to complete the relay communication of passive audio signals.In order to further expand the application scenarios of the chip,this paper improved the chip preparation structure to make it waterproof,completed the underwater experiment,and opened up a new research direction for the underwater Internet of Things and aquatic biological wearable optoelectronic devices.This paper also conducts performance tests on the chip in extreme environments,which proves the application potential of the chip in extreme environments.