The performance of an all-fiber-integrated photodetector(AFPD)depends on the integration of the active layer,where FA_(0.4)MA_(0.6)Pb I_3emerges as a promising candidate due to its high absorbance,long carrier diffusi...The performance of an all-fiber-integrated photodetector(AFPD)depends on the integration of the active layer,where FA_(0.4)MA_(0.6)Pb I_3emerges as a promising candidate due to its high absorbance,long carrier diffusion distance,and self-assembly.In this study,we report an AFPD based on FA_(0.4)MA_(0.6)PbI_(3)perovskite,along with thickness design for enhancement.The active layer of the AFPD is regarded as a thin-film waveguide for thickness design.Theoretical analysis and simulation results indicate the presence of resonance mode,enhancing and confining the light field even in a thinned active layer.An FA_(0.4)MA_(0.6)PbI_(3)based metal-semiconductor-metal(MSM)photodetector is directly deposited onto a side-polished multimode fiber(SP-MMF).The transmitted light in fiber leaks from the core to the MSM photodetector through the polished surface of SP-MMF,inducing a detection response.Experimental results demonstrate that the device achieves a responsivity of 3.2 A/W to 650 nm light,with both rising and falling edges of the response time reaching 8 ms.The proposed AFPD and method exhibit potential to simultaneously achieve high responsivity,fast response,and low insertion loss,providing a reliable solution for high-performance photodetection.展开更多
基金National Natural Science Foundation of China(11874281)Key Research and Development Program of Hebei Province(22371701D)+2 种基金Key Laboratory of Intelligent Detection and Equipment for Underground Space of BeijingTianjin-Hebei Urban AgglomerationMinistry of Natural Resources(ZB2022004)Tianjin Research Innovation Project for Postgraduate Students(2022SKYZ146)。
文摘The performance of an all-fiber-integrated photodetector(AFPD)depends on the integration of the active layer,where FA_(0.4)MA_(0.6)Pb I_3emerges as a promising candidate due to its high absorbance,long carrier diffusion distance,and self-assembly.In this study,we report an AFPD based on FA_(0.4)MA_(0.6)PbI_(3)perovskite,along with thickness design for enhancement.The active layer of the AFPD is regarded as a thin-film waveguide for thickness design.Theoretical analysis and simulation results indicate the presence of resonance mode,enhancing and confining the light field even in a thinned active layer.An FA_(0.4)MA_(0.6)PbI_(3)based metal-semiconductor-metal(MSM)photodetector is directly deposited onto a side-polished multimode fiber(SP-MMF).The transmitted light in fiber leaks from the core to the MSM photodetector through the polished surface of SP-MMF,inducing a detection response.Experimental results demonstrate that the device achieves a responsivity of 3.2 A/W to 650 nm light,with both rising and falling edges of the response time reaching 8 ms.The proposed AFPD and method exhibit potential to simultaneously achieve high responsivity,fast response,and low insertion loss,providing a reliable solution for high-performance photodetection.
