title: Upconversion induced enhancement of dye sensitized solar cells based on core-shell structured β-NaYF4:Er3+, Yb3+@SiO2 nanoparticles.
abstract: Upconversion materials have been employed as energy relay materials in dye sensitized solar cells (DSCs) to broaden the range of light absorption. However, the origin of the enhancements can be induced by both upconversion and size-dependent light scattering effects. To clarify the role of the upconversion material in the photoelectrode of DSCs, an upconversion induced device was realized here, which has the size-dependent light scattering effect eliminated via the application of NaYF4:Er(3+), Yb(3+)@SiO2 upconversion nanoparticles (β-NYEY@SiO2 UCNPs). An enhancement of 6% in efficiency was observed for the device. This demonstration provided an insight into the possible further employment of upconversion in DSCs.
authors.affiliation: School of Physics and Technology, Key Laboratory of Artificial Micro/Nano Structures of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China. xzzhao@whu.edu.cn haohu@whu.edu.cn gssyhx@whu.edu.cn.
authors.forename: Ziyao
authors.initials: Z
authors.lastname: Zhou
authors.forename: Jiahong
authors.initials: J
authors.lastname: Wang
authors.forename: Fan
authors.initials: F
authors.lastname: Nan
authors.forename: Chenghao
authors.initials: C
authors.lastname: Bu
authors.forename: Zhenhua
authors.initials: Z
authors.lastname: Yu
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Shishang
authors.initials: S
authors.lastname: Guo
authors.forename: Hao
authors.initials: H
authors.lastname: Hu
authors.forename: Xing-Zhong
authors.initials: XZ
authors.lastname: Zhao
mesh_terms: D005459:Fluorides / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry*; D012993:Solar Energy; D015018:Ytterbium / Q000737:chemistry*; D015019:Yttrium / Q000737:chemistry*
chemical_list: C525362:sodium yttriumtetrafluoride; D015019:Yttrium; D012822:Silicon Dioxide; D015018:Ytterbium; D005459:Fluorides