NDLI: Improving the efficiency of ZnO-based dye-sensitized solar cells by Pr and N co-doping

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Journal of Materials Chemistry A Vol - 1 Issue - 29

Journal of Materials Chemistry A Vol - 1 Issue - 19

Journal of Materials Chemistry A Vol - 1 Issue - 9

Journal of Materials Chemistry A Vol - 1 Issue - 8

Journal of Materials Chemistry A Vol - 1 Issue - 7

Journal of Materials Chemistry A Vol - 1 Issue - 6

Journal of Materials Chemistry A Vol - 1 Issue - 5

Improving the efficiency of ZnO-based dye-sensitized solar cells by Pr and N co-doping

Content Provider	Royal Society of Chemistry (RSC)
Author	Yang, Yulin Fan, Ruiqing Li, Liang Zhang, Lingyun Yu, Jia
Copyright Year	2013
Abstract	Pr and N co-doped ZnO (Pr:N:ZnO, doping concentration: 1 mol% Pr, 0.36 mol% N) was synthesized using an annealing method under an atmosphere of NH3 gas in a custom stainless steel autoclave. Scanning electron microscopy (SEM) was used to characterize the morphology of Pr:N:ZnO. The structure and chemical composition of the material were characterized using X-ray diffraction analysis (XRD) and X-ray photoelectron spectroscopy (XPS). The results demonstrated that Pr:N:ZnO maintained a hexagonal wurtzite structure, and that Pr and N atoms were successfully incorporated into the lattice of ZnO. The co-doping of Pr and N has a significant influence on the optical properties of ZnO. UV-visible absorption spectroscopy (UV-vis) showed that Pr and N co-doping led to a red shift of the absorption edge of ZnO into the visible-light region. UV-visible absorption spectroscopy and surface photovoltage spectroscopy (SPS) demonstrated that the band gap of ZnO was narrowed with the dopant atoms generating impurity sub-bands. The incident photon-to-current conversion efficiency (IPCE) spectra demonstrated that Pr and N co-doping could successfully improve the light harvesting of a DSSC. The transient photovoltage (TPV) indicated that Pr and N co-doping increased the rate of charge separation and the electron lifetime. A dye-sensitized solar cell with Pr:N:ZnO as the anode exhibited a short-circuit photocurrent density as high as 13.84 mA cm−2, an open-circuit photovoltage of 590 mV, a fill factor of 0.63, and an overall light conversion efficiency of 5.2% under standard global AM 1.5 solar irradiation conditions.
Starting Page	12066
Ending Page	12073
Page Count	8
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	1
Issue Number	39
Journal	Journal of Materials Chemistry A
DOI	10.1039/c3ta11570d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Dopant Nucleic acid thermodynamics Ammonia Stainless steel Autoclave Scanning electron microscope X-ray crystallography X-ray photoelectron spectroscopy Photoemission spectroscopy Wurtzite crystal structure Crystal structure Spectroscopy Surface photovoltage Space-based solar power Band gap List of pedophile and pederast advocacy organizations Dye-sensitized solar cell Anode Photocurrent Amplitude modulation
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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