Light absorption engineering of a hybrid (Sn₃S₇^2-)_n based semiconductor - from violet to red light absorption.

ABSTRACT: The crystalline two-dimensional thiostannate Sn₃S₇(trenH)₂ [tren = tris(2-aminoethyl)amine] consists of negatively charged (Sn₃S₇^2-)_n polymeric sheets with trenH⁺ molecular species embedded in-between. The semiconducting compound is a violet light absorber with a band gap of 3.0 eV. In this study the compound was synthesized and functionalized by introducing the cationic dyes Methylene Blue (MB) or Safranin T (ST) into the crystal structure by ion exchange. Dye capacities up to approximately 45 mg/g were obtained, leading to major changes of the light absorption properties of the dye stained material. Light absorption was observed in the entire visible light region from red to violet, the red light abso

SUBMITTER: Hvid MS 

PROVIDER: S-EPMC5379188 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature