Almost complete ligand exchange and excellent colloidal stability of gold nanoparticles can be achieved by a new solvent extraction based method.

Chalcopyrite copper indium disulfide (CIS) QDs have been of recent interest due to their non-toxicity. This article shows a straightforward aqueous cation exchange method to synthesise CIS particles with zinc sulfide coating.

A light-scattering layer fabricated from electrospun titanium dioxide nanofibers (TiO2 -NFs) and single-walled carbon nanotubes (SWCNTs) formed a fiber-based photoanode. The nanocomposite scattering layer had a lawn-like structure and integration of carbon nanotubes into the NF photoanodes increased the power conversion efficiency from 2.9 % to 4.8 % under 1 Sun illumination. Under reduced light intensity (0.25 Sun), TiO2 -NF and TiO2 -NF/SWCNT-based DSSCs reached PCE values of up to 3.7 % and 6.6 %, respectively.

Nickel oxide (NiO) is the most universally studied photocathode to date. We demonstrate that non-toxic CuInS2/ZnS NCs can be used to sensitise NiO photocathodes to achieve an (almost) all-inorganic system.