We present a highly sensitive, filtlerless, visible blind, omnidirectional and wearable near infrared photodetector suitable for next generation of wearable technologies. Here, the hybrid device constituents include lanthanides doped upconversion nanoparticles, graphene and micro-pyramidical poly(dimethylsiloxane) film. This hybrid device exhibits ultra-high responsivity of ~ 800 AW−1 at VDS = 1 V under 0.07 µW of 980 nm laser illumination. The novel design of the device makes it user friendly, light weight, durable and transparent.

© 2019 The Author(s)

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