title: Plasmonic silver nanosphere enhanced ZnSe nanoribbon/Si heterojunction optoelectronic devices.
abstract: In this study, we report a localized surface plasmon resonance (LSPR) enhanced optoelectronic device based on a ZnSe:Sb nanoribbon (NR)/Si nano-heterojunction. We experimentally demonstrated that the LSPR peaks of plasmonic Ag nanoparticles (Ag NPs) can be readily tuned by changing their size distribution. Optical analysis reveals that the absorption of ZnSe:Sb NRs was increased after the decoration of the Ag NPs with strong LSPR. Further analysis of the optoelectronic device confirmed the device performance can be promoted: for example, the short-circuit photocurrent density of the ZnSe/Si heterojunction solar cell was improved by 57.6% from 11.75 to 18.52 mA cm(-2) compared to that without Ag NPs. Meanwhile, the responsivity and detectivity of the ZnSe:Sb NRs/Si heterojunction device increased from 117.2 to 184.8 mA W(-1), and from 5.86 × 10(11) to 9.20 × 10(11) cm Hz(1/2) W(-1), respectively.
authors.affiliation: School of Electronic Science and Applied Physics and Anhui Provincial Key Laboratory of Advanced Materials and Devices, Hefei University of Technology, Hefei, Anhui 230009, People's Republic of China.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.forename: Ran
authors.initials: R
authors.lastname: Chen
authors.forename: Zhi-Fei
authors.initials: ZF
authors.lastname: Ren
authors.forename: Cai-Wang
authors.initials: CW
authors.lastname: Ge
authors.forename: Zhen-Xing
authors.initials: ZX
authors.lastname: Liu
authors.forename: Shu-Juan
authors.initials: SJ
authors.lastname: He
authors.forename: Yong-Qiang
authors.initials: YQ
authors.lastname: Yu
authors.forename: Chun-Yan
authors.initials: CY
authors.lastname: Wu
authors.forename: Lin-Bao
authors.initials: LB
authors.lastname: Luo