We suggest the use of nano-fractal antennas for plasmonic coupling to enhance nanowire (NW) photovoltaic power conversion efficiency. Silicon radial pn junction NWs positioned inside Apollonian and Sierpinski nano-fractal antennas are simulated with different topologies and NW lengths. An enhancement in power conversion efficiency ranging from 12% to up to 24% over the same NW without antenna case is achieved.
© 2013 Optical Society of America
Original Manuscript: July 2, 2013
Revised Manuscript: August 18, 2013
Manuscript Accepted: August 20, 2013
Published: September 13, 2013
S. Abdellatif and K. Kirah, "Nanowire photovoltaic efficiency enhancement using plasmonic coupled nano-fractal antennas," Opt. Lett. 38, 3680-3683 (2013)