High-performance photorefractive polymers sensitized by cadmium selenide nanoparticles

Abstract

We report on efficient and fast hybrid photorefractive polymer sensitized with cadmium selenide (CdSe) quantum dots. The surface of the quantum dots was treated with 4-methylbenzenethiol. This surfactant is responsible for efficient photoinduced charge generation in the composite, leading to fast grating build-up times of 100ms and below. Overmodulation of the diffraction efficiency was observed at an applied field of 60V∕μm.