title: Enhanced Photovoltage Response of Hematite-X-Ferrite Interfaces (X = Cr, Mn, Co, or Ni).
abstract: High-fluorescent p-X-ferrites (XFe2O4; XFO; X = Fe, Cr, Mn, Co, or Ni) embedded in n-hematite (Fe2O3) surfaces were successfully fabricated via a facile bio-approach using Shewanella oneidensis MR-1. The results revealed that the X ions with high/low work functions modify the unpaired spin Fe2+-O2-orbitals in the XFe2O4lattices to become localized paired spin orbitals at the bottom of conduction band, separating the photovoltage response signals (73.36~455.16/-72.63~-32.43 meV). These (Fe2O3)-O-O-(XFe2O4) interfacial coupling behaviors at two fluorescence emission peaks (785/795 nm) are explained via calculating electron-hole effective masses (Fe2O3-FeFe2O417.23 × 10-31kg; Fe2O3-CoFe2O43.93 × 10-31kg; Fe2O3-NiFe2O411.59 × 10-31kg; Fe2O3-CrFe2O4-4.2 × 10-31kg; Fe2O3-MnFe2O4-11.73 × 10-31kg). Such a system could open up a new idea in the design of photovoltage response biosensors.
authors.affiliation: Institute of Gem and Material Technology, Hebei GEO University, Shijiazhuang, 050000, Hebei, China. bianliang555551@126.com.|Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, South West University of Science and Technology, Mianyang, 621010, Sichuan, China. bianliang555551@126.com.|Key Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Urumqi, 830011, Xinjiang, China. bianliang555551@126.com.
authors.forename: Liang
authors.initials: L
authors.lastname: Bian
authors.affiliation: Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, South West University of Science and Technology, Mianyang, 621010, Sichuan, China. well09131015@126.com.|Key Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Urumqi, 830011, Xinjiang, China. well09131015@126.com.
authors.forename: Hai-Long
authors.initials: HL
authors.lastname: Li
authors.affiliation: Key Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Urumqi, 830011, Xinjiang, China.
authors.forename: Yu-Jin
authors.initials: YJ
authors.lastname: Li
authors.affiliation: Key Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Urumqi, 830011, Xinjiang, China.
authors.forename: Jia-Nan
authors.initials: JN
authors.lastname: Nie
authors.affiliation: Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, South West University of Science and Technology, Mianyang, 621010, Sichuan, China.
authors.forename: Fa-Qin
authors.initials: FQ
authors.lastname: Dong
authors.affiliation: Department of Geology and Environmental Earth Science, Miami University, Oxford, 45056, OH, USA.
authors.forename: Hai-Liang
authors.initials: HL
authors.lastname: Dong
authors.affiliation: Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, South West University of Science and Technology, Mianyang, 621010, Sichuan, China.
authors.forename: Mian-Xin
authors.initials: MX
authors.lastname: Song
authors.affiliation: Institute of Gem and Material Technology, Hebei GEO University, Shijiazhuang, 050000, Hebei, China.
authors.forename: Li-Sheng
authors.initials: LS
authors.lastname: Wang
authors.affiliation: Institute of Gem and Material Technology, Hebei GEO University, Shijiazhuang, 050000, Hebei, China.
authors.forename: Tian-Liang
authors.initials: TL
authors.lastname: Zhou
authors.affiliation: Key Laboratory of Solid Waste Treatment and Resource Recycle, Ministry of Education, South West University of Science and Technology, Mianyang, 621010, Sichuan, China.|Key Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Urumqi, 830011, Xinjiang, China.
authors.forename: Xiao-Yan
authors.initials: XY
authors.lastname: Zhang
authors.affiliation: Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, 621900, Sichuan, China.
authors.forename: Xin-Xi
authors.initials: XX
authors.lastname: Li
authors.affiliation: Institute of Nuclear Physics and Chemistry, CAEP, Mianyang, 621900, Sichuan, China.
authors.forename: Lei
authors.initials: L
authors.lastname: Xie
keywords: Fluorescence enhancement; Heterostructure; Quantum dots; Shewanella oneidensis MR-1