Thermally stable and flexible paper photosensors based on 2D BN nanosheets

For the first time we demonstrated solar blind PDs based on flexible BNNSs composited nanopaper with excellent detectivity of 8.05x10
¹⁰
cm Hz
^1/2
/W, fast recovery time of 0.393 s (ten times shorter than a single BNNS-based PD), ultrahigh thermal conductivity of 146 W/m K (three-order larger than conventional flexible substrates), 200-
^o
C working temperature, outstanding flexibility, and great durability in 200-bending cycles. These results reveal promising potential to solve the thermal issues for future flexible applications.