Quantum‐Dot‐Sensitized Solar Cells: Atomic Layer Deposition of CdS Quantum Dots for Solid‐State Quantum Dot Sensitized Solar Cells (Adv. Energy Mater. 6/2011)

CdS quantum dots are grown during the nuclea‐tion phase of atomic layer deposition (ALD) and harvest light in a quantum dot‐sensitized solar cell (QDSSC), report Stacey Bent, Michael McGehee, and co‐workers on p. 1169 . Dimethylcadmium molecules are shown penetrating a nanoporous TiO 2 substrate and reacting with surface sites on the CdS quantum dots. Once filled with a solid‐state hole conductor, the quantum dots—whose bandgaps are functions of the number of ALD cycles performed—absorb photons and inject excited electrons into the TiO 2 .