Improved efficiency of dye-sensitized solar cells by doping of strontium aluminate phosphor in TiO2 photoelectrode

• Autorzy: Hwangbo S. , Kim J. T. , Hwang K. S.

Identyfikatory

DOI

10.1515/msp-2015-0031

• Języki publikacji: EN

Abstrakty

EN

SrAl₂O₄:Eu²⁺, Dy³⁺ phosphor was synthesized by chemical solution route to use as a dopant in TiO2 layer employed as a photoelectrode for down conversion of ultraviolet and near-ultraviolet to visible and near-infrared light in a dye-sensitized solar cell. Nano-crystalline structure of the SrAl₂O₄:Eu²⁺, Dy³⁺powder was confirmed by X-ray diffraction analysis and field emission scanning electron microscopy. Monitored at 520 nm, SrAl₂O₄:Eu²⁺, Dy³⁺ phosphor showed emission peaks at 460 to 610 nm due to 4f⁶ → 4f⁷ transitions of Eu²⁺ ions. For the study, SrAl₂O₄:Eu²⁺, Dy³⁺ phosphor-doped TiO2 layer was deposited on fluorine-doped tin oxide coated glass by electrostatic spray deposition. The short circuit current, open circuit voltage, fill factor, and conversion efficiency of the cells were measured. Experimental results revealed that the device efficiency for the SrAl₂O₄:Eu²⁺, Dy³⁺ phosphor-doped TiO₂ layer increased to 7.20 %, whereas that of the pure-TiO₂ photoelectrode was 4.13 %.

Słowa kluczowe

EN

phosphor; down conversion; dye-sensitized solar cell

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2015
• Tom: Vol. 33, No. 2
• Strony: 237--241
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Hwangbo S.

• Department of Electronic & Photonic Engineering, Honam University, 59-1 Seobong-dong, Gwangsan-gu, Gwangju 506-714, Korea

autor

Kim J. T.

• Department of Photonic Engineering, Chosun University, 309 Pilmun-daero, Dong-gu, Gwangju 501-759, Korea

autor

Hwang K. S.

• Department of Biomedical Engineering, Nambu University, 864-1 Wolgye-dong, Gwangsan-gu, Gwangju 506-824, Korea

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