Biocompatible Single-Crystal Selenium Nanobelt Based Nanodevice as a Temperature-Tunable Photosensor

Abstract EN

Selenium materials are widely used in photoelectrical devices, owing to their unique semiconductive properties.

Single-crystal selenium nanobelts with large specific surface area, fine photoconductivity, and biocompatibility provide potential applications in biomedical nanodevices, such as implantable artificial retina and rapid photon detector/stimulator for optogenetics.

Here, we present a selenium nanobelt based nanodevice, which is fabricated with single Se nanobelt.

This device shows a rapid photo response, different sensitivities to visible light of variable wave length, and temperature-tunable property.

The biocompatibility of the Se nanobelts was proved by MTT test using two cell lines.

Our investigation introduced a photosensor that will be important for multiple potential applications in human visual system, photocells in energy or MEMS, and temperature-tunable photoelectrical device for optogenetics research.