Ga_(2)O_(3)thin films have emerged as an excellent choice as a photoactive layer,with specifically significant prospects for detection within the solar blind range,due to its large direct bandgap,high sensitivity and ...Ga_(2)O_(3)thin films have emerged as an excellent choice as a photoactive layer,with specifically significant prospects for detection within the solar blind range,due to its large direct bandgap,high sensitivity and outstanding stability.Yet,achieving a high responsivity at low supply voltage has proven to be challenging.Here,we fabricated and characterized high-performance vertical-structuredβ-Ga_(2)O_(3)photodetectors with epitaxial Hf_(0.5)Zr_(0.5)O_(2)as an interlayer that demonstrated a very high responsivity of up to 148 A W^(−1) at a low voltage of 9.8 V.The polar Hf_(0.5)Zr_(0.5)O_(2)interlayer and low dark current density characteristics enhance the detection performance at low supply voltage and ultralow light intensity.These results provide a path towards high-performance and highly integrated deep-ultraviolet detection devices,beyond conventional ones in terms of application.展开更多
Triboelectric nanogenerators(TENGs)are promising for self-powered biomedical applications such as wound healing,cancer therapy,and biosensing.However,their dependence on external wires and electrodes limits usability ...Triboelectric nanogenerators(TENGs)are promising for self-powered biomedical applications such as wound healing,cancer therapy,and biosensing.However,their dependence on external wires and electrodes limits usability and comfort.Here,we introduce a wire-free approach using dermal conductive tattoos.Unlike conventional systems requiring a back conductor,our method uses skin as the triboelectric layer,with charge transferred via subdermal conductive tattoos—eliminating external accessories.This concept was validated through triboelectric testing of skin,tattoo performance on artificial models,bioresorbable ink development,and in vivo voltage generation.The system successfully accelerated wound healing in freely walking animals,powered solely by body motion.The use of bioresorbable zinc-based inks enabled temporary functionality that disappeared naturally with the healing process.Furthermore,the tattooed electrodes can be seamlessly merged with artistic designs,paving the way for next-generation bioelectronic tattoos that are both therapeutic and aesthetically personalized.展开更多
基金supported by the National Key R&D Program of China(2020YFA0406202)the National Natural Science Foundation of China(22090042 and 21971009)Guangxi BaGui Scholars Special Funding,and the Fundamental Research Funds for the Central Universities,China(FRF-IDRY-GD21-03 and GJRC003).
文摘Ga_(2)O_(3)thin films have emerged as an excellent choice as a photoactive layer,with specifically significant prospects for detection within the solar blind range,due to its large direct bandgap,high sensitivity and outstanding stability.Yet,achieving a high responsivity at low supply voltage has proven to be challenging.Here,we fabricated and characterized high-performance vertical-structuredβ-Ga_(2)O_(3)photodetectors with epitaxial Hf_(0.5)Zr_(0.5)O_(2)as an interlayer that demonstrated a very high responsivity of up to 148 A W^(−1) at a low voltage of 9.8 V.The polar Hf_(0.5)Zr_(0.5)O_(2)interlayer and low dark current density characteristics enhance the detection performance at low supply voltage and ultralow light intensity.These results provide a path towards high-performance and highly integrated deep-ultraviolet detection devices,beyond conventional ones in terms of application.
基金funded by Iran National Science Foundation(INSF)under project no.4022012.
文摘Triboelectric nanogenerators(TENGs)are promising for self-powered biomedical applications such as wound healing,cancer therapy,and biosensing.However,their dependence on external wires and electrodes limits usability and comfort.Here,we introduce a wire-free approach using dermal conductive tattoos.Unlike conventional systems requiring a back conductor,our method uses skin as the triboelectric layer,with charge transferred via subdermal conductive tattoos—eliminating external accessories.This concept was validated through triboelectric testing of skin,tattoo performance on artificial models,bioresorbable ink development,and in vivo voltage generation.The system successfully accelerated wound healing in freely walking animals,powered solely by body motion.The use of bioresorbable zinc-based inks enabled temporary functionality that disappeared naturally with the healing process.Furthermore,the tattooed electrodes can be seamlessly merged with artistic designs,paving the way for next-generation bioelectronic tattoos that are both therapeutic and aesthetically personalized.
