Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Conversion Efficiency of Dye-sensitized Solar Cells Using Multi-layered $TiO_2$ Electrodes

다층구조의 $TiO_2$ 전극을 이용한 염료감응형 태양전지의 변환효율

  • Received : 2010.01.19
  • Accepted : 2010.02.22
  • Published : 2010.06.10
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Abstract

Recently, the design of the multi-layered $TiO_2$ electrodes has been attracted for high efficiency of dye-sensitized solar cells. In this study, conversion efficiency of the multi-layered $TiO_2$ electrodes was investigated by using small and large $TiO_2$ nanoparticles. Nanostructured $TiO_2$ powders were prepared by $TiCl_4$ hydrolysis. Differently sized $TiO_2$ powders of which the average diameter was 7.6 and 18 nm were obtained by controlled calcination temperature. It was confirmed that multi-layered $TiO_2$ electrodes significantly influence short-circuit current (Jsc) and also show higher conversion efficiency than dye-sensitized solar cells consisting of each particles.

최근 고효율 염료감응형 태양전지를 위한 다층구조의 $TiO_2$ 전극에 대한 연구가 관심을 받고 있다. 본 연구에서는 입자의 크기가 작고 큰 $TiO_2$로 이루어진 다층구조의 $TiO_2$ 전극에 대해 연구하였다. 나노구조를 갖는 $TiO_2$ 분말은 $TiCl_4$를 가수분해하여 합성하였다. 크기가 7.6 nm 및 18 nm인 $TiO_2$ 분말은 소성온도를 조절하여 얻었다. 다층구조를 갖는 $TiO_2$ 전극이 단락전류(Jsc)에 큰 영향을 미치는 것을 확인하였으며, 또한 다층구조를 갖는 $TiO_2$ 전극이 각각의 입자만을 사용한 염료감응형 태양전지 보다 변환효율이 증가함을 확인하였다.

Keywords

References

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