Fabrication of a visible light detector based on a coaxial polypyrrole/TiO2 nanorod heterojunction

Abstract

A visible light detector can be fabricated using a coaxial polypyrrole/TiO₂ nanorod composite. Based on the composite, the detector exhibits high responsivity up to 0.45 A W⁻¹, impressive stability and excellent linear dependence of the photoresponse on visible light intensity. All of these properties make the polypyrrole/TiO₂ nanorod composite very competitive and highly applicable in visible light detection.