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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)
Author(s) -
Brennan Thomas P.,
Ardalan Pendar,
Lee HanBoRam,
Bakke Jonathan R.,
Ding IKang,
McGehee Michael D.,
Bent Stacey F.
Publication year - 2011
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201190028
Subject(s) - quantum dot , materials science , atomic layer deposition , nanoporous , solar cell , optoelectronics , deposition (geology) , nanotechnology , layer (electronics) , paleontology , sediment , biology
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 .