Development of Ultra-Thin TiO2 Coated WO3 Inverse Opal Photoelectrode for Dye-Sensitized Solar Cells

Maheswari Arunachalam; Seoui Kwag; Inho Lee; Chung Soo Kim; Sang-Kwon Lee; Soon Hyung Kang

doi:10.3740/MRSK.2019.29.8.491

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2019 Vol.29, Issue 8 Preview Page Next Page

Development of Ultra-Thin TiO₂ Coated WO₃ Inverse Opal Photoelectrode for Dye-Sensitized Solar Cells 염료감응형 태양전지로의 응용을 위한 얇은 TiO₂가 코팅 된 WO₃ 역오팔 광전극의 개발

August 2019. pp. 491-496

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Abstract

In this study, we prepare pure WO₃ inverse opal(IO) film with a thickness of approximately 3 μm by electrodeposition, and an ultra-thin TiO₂ layer having a thickness of 2 nm is deposited on WO₃ IO film by atomic layer deposition. Both sets of photoelectrochemical properties are evaluated after developing dye-sensitized solar cells(DSSCs). In addition, morphological, crystalline and optical properties of the developed films are evaluated through field-emission scanning electron microscopy(FE-SEM), High-resolution transmission electron microscopy(HR-TEM), X-ray diffraction(XRD) and UV/visible/infrared spectrophotometry. In particular, pure WO₃ IO based DSSCs show low V_OC, J_SC and fill factor of 0.25 V, 0.89 mA/cm² and 18.9 %, achieving an efficiency of 0.04 %, whereas the TiO₂/WO₃ IO based DSSCs exhibit V_OC, J_SC and fill factor of 0.57 V, 1.18 mA/cm² and 50.1 %, revealing an overall conversion efficiency of 0.34 %, probably attributable to the high dye adsorption and suppressed charge recombination reaction.

Keywords

dye-sensitized solar cell

WO₃

atomic layer deposition

TiO₂

inverse opal

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Information

Publisher :Materials Research Society of Korea
Publisher(Ko) :한국재료학회
Journal Title :Korean Journal of Materials Research
Journal Title(Ko) :한국재료학회지
Volume : 29
No :8
Pages :491-496
Received Date : 2019-07-10
Revised Date : 2019-07-22
Accepted Date : 2019-07-29
DOI :https://doi.org/10.3740/MRSK.2019.29.8.491

Korean Journal of Materials Research ISSN:1225-0562(Print) 2287-7258(Online) 한국재료학회지

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