title: Lead sulfide nanocrystal quantum dot solar cells with trenched ZnO fabricated via nanoimprinting.
abstract: The improvement of power conversion efficiency, especially current density (Jsc), for nanocrystal quantum dot based heterojunction solar cells was realized by employing a trenched ZnO film fabricated using nanoimprint techniques. For an optimization of ZnO patterns, various patterned ZnO films were investigated using electrical and optical analysis methods by varying the line width, interpattern distance, pattern height, and residual layer. Analyzing the features of patterned ZnO films allowed us to simultaneously optimize both the pronounced electrical effects as well as optical properties. Consequently, we achieved an enhancement in Jsc from 7.82 to 12.5 mA cm(-2) by adopting the patterned ZnO with optimized trenched shape.
authors.affiliation: Nanomechanical Systems Research Division, Korea Institute of Machinery and Materials, Yuseong-gu, Daejeon 305-343, Korea.
authors.forename: Sarah
authors.initials: S
authors.lastname: Kim
authors.forename: Jun Kwan
authors.initials: JK
authors.lastname: Kim
authors.forename: Jianbo
authors.initials: J
authors.lastname: Gao
authors.forename: Jung Hoon
authors.initials: JH
authors.lastname: Song
authors.forename: Hey Jin
authors.initials: HJ
authors.lastname: An
authors.forename: Tae-Soo
authors.initials: TS
authors.lastname: You
authors.forename: Tae-Soo
authors.initials: TS
authors.lastname: Lee
authors.forename: Jong-Ryul
authors.initials: JR
authors.lastname: Jeong
authors.forename: Eung-Sug
authors.initials: ES
authors.lastname: Lee
authors.forename: Jun-Ho
authors.initials: JH
authors.lastname: Jeong
authors.forename: Matthew C
authors.initials: MC
authors.lastname: Beard
authors.forename: Sohee
authors.initials: S
authors.lastname: Jeong