title: The tradeoff between plasmonic enhancement and optical loss in silicon nanowire solar cells integrated in a metal back reflector.
abstract: We perform a systematic numerical study to characterize the tradeoff between the plasmonic enhancement and optical loss in periodically aligned, silicon nanowire (SiNW) arrays integrated with a silver back reflector (Ag BR). Optimizing the embedded depth of the wire bottoms into a silver reflector achieved a highly efficient SiNW solar cell. Compared to the SiNW solar cell employing a flat back reflector, the embedded depth of ~20 nm resulted in the relative increase of ~5% in ultimate solar cell efficiency.
authors.affiliation: Department of Chemical Engineering, Hanyang University, Ansan, Gyeonggi, Korea. zhoukeya1982@gmail.com
authors.forename: Keya
authors.initials: K
authors.lastname: Zhou
authors.forename: Zhongyi
authors.initials: Z
authors.lastname: Guo
authors.forename: Xiaopeng
authors.initials: X
authors.lastname: Li
authors.forename: Jin-Young
authors.initials: JY
authors.lastname: Jung
authors.forename: Sang-Won
authors.initials: SW
authors.lastname: Jee
authors.forename: Kwang-Tae
authors.initials: KT
authors.lastname: Park
authors.forename: Han-Don
authors.initials: HD
authors.lastname: Um
authors.forename: Ning
authors.initials: N
authors.lastname: Wang
authors.forename: Jung-Ho
authors.initials: JH
authors.lastname: Lee