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Thomas P. Brennan, Pendar Ardalan, Han-Bo-Ram Lee, Jonathan R. Bakke, I-Kang Ding, Michael D. McGehee and Stacey F. Bent 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) Advanced Energy Materials 1

Article first published online: 15 NOV 2011 | DOI: 10.1002/aenm.201190028

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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 TiO2 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 TiO2.

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