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Monolithic III‐V Nanowire Solar Cells on Graphene via Direct van der Waals Epitaxy
Author(s) -
Mohseni Parsian K.,
Behnam Ashkan,
Wood Joshua D.,
Zhao Xiang,
Yu Ki Jun,
Wang Ning C.,
Rockett Angus,
Rogers John A.,
Lyding Joseph W.,
Pop Eric,
Li Xiuling
Publication year - 2014
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201305909
Subject(s) - nanowire , materials science , graphene , van der waals force , epitaxy , nanotechnology , substrate (aquarium) , optoelectronics , layer (electronics) , chemistry , oceanography , organic chemistry , molecule , geology
Novel solar cells, based on dense arrays of InGaAs nanowires, are grown directly on graphene. Here, graphene serves as the conductive back contact and growth template for van der Waals epitaxial assembly of vertical nanowires. Although far from being the optimum material, core‐shell p–n junction In 0.25 Ga 0.75 As nanowire arrays demonstrate a conversion efficiency of 2.51%, representing a new record for substrate‐free, III‐V nanowire‐based solar cells.