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Plasmonic dye-sensitized solar cells incorporated with Au-TiO2 nanostructures with tailored configurations

  • Jang, Yoon Hee (Department of Chemistry, Global Top 5 Research Program, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, South Korea) , Jang, Yu Jin (Department of Chemistry, Global Top 5 Research Program, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, South Korea) , Kochuveedu, Saji Thomas (Department of Chemistry, Global Top 5 Research Program, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, South Korea) , Byun, Myunghwan (Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology, 291 Daehak-ro, Yuseong-gu, Daejeon, South Korea) , Lin, Zhiqun (School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, USA) , Kim, Dong Ha (김동하, Department of Chemistry, Global Top 5 Research Program, Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu, Seoul, South Korea)
  • NANOSCALE[2040-3364], 2014, v.6 no.3, 1823-1832

초록/요약

We developed plasmonic dye-sensitized solar cells (DSSCs) with tailor-designed Au-TiO2 nanostructures integrated into the photoanode. Mutually antagonistic Au-TiO2 core-shell structures supported on SiO2 spheres (SiO2@TiO2@AuNP and SiO2@AuNP@TiO2) were prepared and incorporated as additives into the photoanodes of the DSSCs. The DSSCs employing the nanocrystalline-TiO2 (nc-TiO2)/SiO2@TiO2@AuNP and nc-TiO2/SiO2@AuNP@TiO2 as photoanodes showed remarkably enhanced power conversion efficiencies up to about 14% and 10%, respectively, with respect to a reference cell containing an nc-TiO2/SiO2@TiO2 photoanode. This can be mainly attributed to the enhanced dye absorption by the intensified near-field effect of AuNPs and plasmon-enhanced photocurrent generation.

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