title: Improved conversion efficiency of amorphous Si solar cells using a mesoporous ZnO pattern.
abstract: To provide a front transparent electrode for use in highly efficient hydrogenated amorphous silicon (a-Si:H) thin-film solar cells, porous flat layer and micro-patterns of zinc oxide (ZnO) nanoparticle (NP) layers were prepared through ultraviolet nanoimprint lithography (UV-NIL) and deposited on Al-doped ZnO (AZO) layers. Through this, it was found that a porous micro-pattern of ZnO NPs dispersed in resin can optimize the light-trapping pattern, with the efficiency of solar cells based on patterned or flat mesoporous ZnO layers increased by 27% and 12%, respectively.
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea.
authors.forename: Bit-Na
authors.initials: BN
authors.lastname: Go
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea.
authors.forename: Yang Doo
authors.initials: YD
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea ; Korea Institute of Energy Research, Ulsan 689-798, Republic of Korea.
authors.forename: Kyoung
authors.initials: K
authors.lastname: Suk Oh
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea.
authors.forename: Chaehyun
authors.initials: C
authors.lastname: Kim
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea.
authors.forename: Hak-Jong
authors.initials: HJ
authors.lastname: Choi
authors.affiliation: Department of Materials Science and Engineering, Korea University, Seoul 136-713, Republic of Korea.
authors.forename: Heon
authors.initials: H
authors.lastname: Lee
keywords: Amorphous silicon solar cell; Light scattering; Mesoporous ZnO pattern; Nanoimprint lithography