Enhancing dye-sensitized solar cell efficiency by anode surface treatments

Chao Hsuan Chang, Hsin Han Lin, Chin Cheng Chen, Franklin Chau-Nan Hong

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this study, titanium substrates treated with HF solution and KOH solution sequentially forming micro- and nano-structures were used for the fabrication of flexible dye-sensitized solar cells (DSSCs). After wet etching treatments, the titanium substrates were then exposed to the O 2 plasma treatment and further immersed in titanium tetrachloride (TiCl 4 ) solution. The process conditions for producing a very thin TiO 2 blocking layer were studied, in order to avoid solar cell current leakage for increasing the solar cell efficiency. Subsequently, TiO 2 nanoparticles were spin-coated on Ti substrates with varied thickness. The dye-sensitized solar cells on the titanium substrates were subjected to simulate AM 1.5 G irradiation of 100 mW/cm 2 using backside illumination mode. Surface treatments of Ti substrate and TiO 2 anode were found to play a significant role in improving the efficiency of DSSC. The efficiencies of the backside illumination solar cells were raised from 4.6% to 7.8% by integrating these surface treatments.

Original languageEnglish
Pages (from-to)204-208
Number of pages5
JournalThin Solid Films
Volume570
Issue numberPB
DOIs
Publication statusPublished - 2014 Nov 3

Fingerprint

surface treatment
Surface treatment
Anodes
anodes
solar cells
dyes
Titanium
Substrates
titanium
Solar cells
Lighting
illumination
Wet etching
tetrachlorides
Leakage currents
Dye-sensitized solar cells
Irradiation
Nanoparticles
leakage
Plasmas

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

Cite this

Chang, Chao Hsuan ; Lin, Hsin Han ; Chen, Chin Cheng ; Hong, Franklin Chau-Nan. / Enhancing dye-sensitized solar cell efficiency by anode surface treatments. In: Thin Solid Films. 2014 ; Vol. 570, No. PB. pp. 204-208.
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Enhancing dye-sensitized solar cell efficiency by anode surface treatments. / Chang, Chao Hsuan; Lin, Hsin Han; Chen, Chin Cheng; Hong, Franklin Chau-Nan.

In: Thin Solid Films, Vol. 570, No. PB, 03.11.2014, p. 204-208.

Research output: Contribution to journalArticle

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AU - Chang, Chao Hsuan

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AB - In this study, titanium substrates treated with HF solution and KOH solution sequentially forming micro- and nano-structures were used for the fabrication of flexible dye-sensitized solar cells (DSSCs). After wet etching treatments, the titanium substrates were then exposed to the O 2 plasma treatment and further immersed in titanium tetrachloride (TiCl 4 ) solution. The process conditions for producing a very thin TiO 2 blocking layer were studied, in order to avoid solar cell current leakage for increasing the solar cell efficiency. Subsequently, TiO 2 nanoparticles were spin-coated on Ti substrates with varied thickness. The dye-sensitized solar cells on the titanium substrates were subjected to simulate AM 1.5 G irradiation of 100 mW/cm 2 using backside illumination mode. Surface treatments of Ti substrate and TiO 2 anode were found to play a significant role in improving the efficiency of DSSC. The efficiencies of the backside illumination solar cells were raised from 4.6% to 7.8% by integrating these surface treatments.

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