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Rationally Designed, Three‐Dimensional Carbon Nanotube Back‐Contacts for Efficient Solar Devices
Author(s) -
Pint Cary L.,
Takei Kuniharu,
Kapadia Rehan,
Zheng Maxwell,
Ford Alexandra C.,
Zhang Junjun,
Jamshidi Arash,
Bardhan Rizia,
Urban Jeffrey J.,
Wu Ming,
Ager Joel W.,
Oye Michael M.,
Javey Ali
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.201100436
Subject(s) - materials science , carbon nanotube , nanotechnology , template , energy conversion efficiency , carbon fibers , absorption (acoustics) , carbon nanofiber , optoelectronics , energy transformation , composite material , physics , composite number , thermodynamics
Structure matters in solar‐to‐fuel conversion efficiency, demonstrated for TiO 2 coated onto designed three‐dimensional (3‐D) carbon nanofiber scaffolds. Performance enhancement of up to three times compared to flat films can be mostly attributed to structurally‐enhanced carrier collection and photon management processes. Using 3‐D templates to balance light absorption depth and carrier collection can lead to a new class of high efficiency and cheap energy conversion devices.