Application of nitrogen-doped TiO2 nano-tubes in dye-sensitized solar cells
http://repository.vnu.edu.vn/handle/VNU_123/28153
Our
research aimed to improve the overall energy conversion efficiency of DSCs by
applying nitrogen-doped TiO2 nano-tubes (N-TNT) for the preparation of DSCs
photo-anodes.
The
none-doped TiO2 nano-tubes (TNTs) were synthesized by alkaline hydrothermal
treatment of Degussa P25 TiO2 particles in 10M NaOH.
The
nanotubes were N-doped by reflux in various concentrations of NH4NO3.
The
effects of nitrogen doping on the structure, morphology, and crystallography of
N-TNT were analyzed by transmission electron microscopy (TEM), infrared
spectroscopy (IR), Raman spectroscopy, and X-ray photoelectron spectra (XPS).
DSCs
fabricated with doped N-TNT and TNT was characterized by J-V measurements.
Results
showed that nitrogen doping significantly enhanced the efficiency of N-TNT
cells, reaching the optimum value (η = 7.36%) with 2M nitrogen dopant, compared
to η = 4.75% of TNT cells.
The
high efficiency of the N-TNT cells was attributed to increased current density
due to the reduction of dark current in the DSCs.
Title: | Application of nitrogen-doped TiO2 nano-tubes in dye-sensitized solar cells |
Authors: | Tran Vy Anh Trieu Thinh Truong Pham Phan Thu Anh Nguyen Trang Ngoc Le Tien Khoa |
Keywords: | Dye-sensitized solar cell TiO2 nano-tubes N-doped TiO2 TiO2 surface modification dark current |
Issue Date: | 2017 |
Publisher: | ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS |
Citation: | ISIKNOWLEDGE |
Abstract: | Our research aimed to improve the overall energy conversion efficiency of DSCs by applying nitrogen-doped TiO2 nano-tubes (N-TNT) for the preparation of DSCs photo-anodes. The none-doped TiO2 nano-tubes (TNTs) were synthesized by alkaline hydrothermal treatment of Degussa P25 TiO2 particles in 10M NaOH. The nanotubes were N-doped by reflux in various concentrations of NH4NO3. The effects of nitrogen doping on the structure, morphology, and crystallography of N-TNT were analyzed by transmission electron microscopy (TEM), infrared spectroscopy (IR), Raman spectroscopy, and X-ray photoelectron spectra (XPS). DSCs fabricated with doped N-TNT and TNT was characterized by J-V measurements. Results showed that nitrogen doping significantly enhanced the efficiency of N-TNT cells, reaching the optimum value (η = 7.36%) with 2M nitrogen dopant, compared to η = 4.75% of TNT cells. The high efficiency of the N-TNT cells was attributed to increased current density due to the reduction of dark current in the DSCs. |
Description: | TNS06970 ; APPLIED SURFACE SCIENCE Volume: 399 Pages: 515-522 Published: MAR 31 2017 |
URI: | http://repository.vnu.edu.vn/handle/VNU_123/28153 0169-4332 http://www.sciencedirect.com/science/article/pii/S0169433216328537 |
ISSN: | 1873-5584 |
Appears in Collections: | Bài báo của ĐHQGHN trong Web of Science |
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