Journal
JOURNAL OF PHYSICS D-APPLIED PHYSICS
Volume 42, Issue 11, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0022-3727/42/11/115104
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Funding
- Ministry of Education, Culture, Sports, Science and Technology, Japan
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Here we present a simple and novel approach of fabricating three dimensional (3D) n-Si nanowires (NWs) and poly(3-octylthiophene) hybrid solar cells incorporating carbon nanotubes (CNTs). Vertically aligned n-Si NWs arrays were fabricated by electroless chemical etching of a n-Si [1 1 1] wafer. n-Si NWs/poly(3-octylthiophene) hybrid solar cells were fabricated with and without functionalized CNTs incorporation. Fabricated solar cells incorporating CNTs show open circuit voltage (V(oc)), short circuit current density (J(sc)) fill factor (FF) and conversion efficiency as 0.353, 7.85 mA cm(-2), 22% and 0.61%, respectively. In fabricated devices n-Si NWs arrays form multiple heterojunctions with the polymer and provide efficient electron collection and transportation, whereas CNTs provide efficient hole transportation.
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