Super helical Au/TiO2 nanocomposites based on plasmid DNA for efficiency dye-sensitized solar cells

Mei Yu; Yanbing Meng; Jindan Zhang; Jianhua Liu; Songmei Li

doi:10.1007/s10854-016-6033-9

Super helical Au/TiO₂ nanocomposites based on plasmid DNA for efficiency dye-sensitized solar cells

Mei Yu^*
, Yanbing Meng
, Jindan Zhang
, Jianhua Liu
, Songmei Li

^*Corresponding author for this work

School of Materials Science and Engineering

Beihang University

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

Super helical Au/TiO₂ nanocomposites were synthesized using plasmid DNA and incorporated into photoanode of dye-sensitized solar cells (DSSCs). The performance of photoanode films and DSSCs was investigated. Plasmid DNA can not only support as bio scaffold to synthesize Au/TiO₂ nanocomposites, but also act as an effective reducing agent under ultraviolet (UV) irradiation. Compared with TiO₂-only DSSCs, the light harvesting (LH), corresponding photocurrent and power conversion efficiency (PCE) of DSSCs were enhanced by incorporating of mechanically mixed Au-TiO₂ NPs and Au/TiO₂ nanocomposites. Compared to the TiO₂-only DSSCs samples (5.12%), the PCE of DSSCs with mechanically mixed Au-TiO₂ nanoparticles (NPs) (6.41%) increased by 25.20%, and DSSCs with Au/TiO₂ nanocomposites (8.17%) increased by 59.57%. The best PCE (8.24%) of DSSCs was obtained with the incorporation of Au/TiO₂ nanocomposites. Two reasons were presented for the best performance of DSSCs with Au/TiO₂ nanocomposites. Firstly, the localized surface plasmon resonance (LSPR) effect of Au NPs enhanced the absorption visible light. Secondly, the super helical structure of Au/TiO₂ nanocomposites provided a path for the transmission of photoelectrons.

Original language	English
Pages (from-to)	4138-4145
Number of pages	8
Journal	Journal of Materials Science: Materials in Electronics
Volume	28
Issue number	5
DOIs	https://doi.org/10.1007/s10854-016-6033-9
State	Published - 1 Mar 2017

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title = "Super helical Au/TiO2 nanocomposites based on plasmid DNA for efficiency dye-sensitized solar cells",

abstract = "Super helical Au/TiO2 nanocomposites were synthesized using plasmid DNA and incorporated into photoanode of dye-sensitized solar cells (DSSCs). The performance of photoanode films and DSSCs was investigated. Plasmid DNA can not only support as bio scaffold to synthesize Au/TiO2 nanocomposites, but also act as an effective reducing agent under ultraviolet (UV) irradiation. Compared with TiO2-only DSSCs, the light harvesting (LH), corresponding photocurrent and power conversion efficiency (PCE) of DSSCs were enhanced by incorporating of mechanically mixed Au-TiO2 NPs and Au/TiO2 nanocomposites. Compared to the TiO2-only DSSCs samples (5.12\%), the PCE of DSSCs with mechanically mixed Au-TiO2 nanoparticles (NPs) (6.41\%) increased by 25.20\%, and DSSCs with Au/TiO2 nanocomposites (8.17\%) increased by 59.57\%. The best PCE (8.24\%) of DSSCs was obtained with the incorporation of Au/TiO2 nanocomposites. Two reasons were presented for the best performance of DSSCs with Au/TiO2 nanocomposites. Firstly, the localized surface plasmon resonance (LSPR) effect of Au NPs enhanced the absorption visible light. Secondly, the super helical structure of Au/TiO2 nanocomposites provided a path for the transmission of photoelectrons.",

author = "Mei Yu and Yanbing Meng and Jindan Zhang and Jianhua Liu and Songmei Li",

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AU - Yu, Mei

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AU - Zhang, Jindan

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AU - Li, Songmei

PY - 2017/3/1

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N2 - Super helical Au/TiO2 nanocomposites were synthesized using plasmid DNA and incorporated into photoanode of dye-sensitized solar cells (DSSCs). The performance of photoanode films and DSSCs was investigated. Plasmid DNA can not only support as bio scaffold to synthesize Au/TiO2 nanocomposites, but also act as an effective reducing agent under ultraviolet (UV) irradiation. Compared with TiO2-only DSSCs, the light harvesting (LH), corresponding photocurrent and power conversion efficiency (PCE) of DSSCs were enhanced by incorporating of mechanically mixed Au-TiO2 NPs and Au/TiO2 nanocomposites. Compared to the TiO2-only DSSCs samples (5.12%), the PCE of DSSCs with mechanically mixed Au-TiO2 nanoparticles (NPs) (6.41%) increased by 25.20%, and DSSCs with Au/TiO2 nanocomposites (8.17%) increased by 59.57%. The best PCE (8.24%) of DSSCs was obtained with the incorporation of Au/TiO2 nanocomposites. Two reasons were presented for the best performance of DSSCs with Au/TiO2 nanocomposites. Firstly, the localized surface plasmon resonance (LSPR) effect of Au NPs enhanced the absorption visible light. Secondly, the super helical structure of Au/TiO2 nanocomposites provided a path for the transmission of photoelectrons.

AB - Super helical Au/TiO2 nanocomposites were synthesized using plasmid DNA and incorporated into photoanode of dye-sensitized solar cells (DSSCs). The performance of photoanode films and DSSCs was investigated. Plasmid DNA can not only support as bio scaffold to synthesize Au/TiO2 nanocomposites, but also act as an effective reducing agent under ultraviolet (UV) irradiation. Compared with TiO2-only DSSCs, the light harvesting (LH), corresponding photocurrent and power conversion efficiency (PCE) of DSSCs were enhanced by incorporating of mechanically mixed Au-TiO2 NPs and Au/TiO2 nanocomposites. Compared to the TiO2-only DSSCs samples (5.12%), the PCE of DSSCs with mechanically mixed Au-TiO2 nanoparticles (NPs) (6.41%) increased by 25.20%, and DSSCs with Au/TiO2 nanocomposites (8.17%) increased by 59.57%. The best PCE (8.24%) of DSSCs was obtained with the incorporation of Au/TiO2 nanocomposites. Two reasons were presented for the best performance of DSSCs with Au/TiO2 nanocomposites. Firstly, the localized surface plasmon resonance (LSPR) effect of Au NPs enhanced the absorption visible light. Secondly, the super helical structure of Au/TiO2 nanocomposites provided a path for the transmission of photoelectrons.

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Super helical Au/TiO₂ nanocomposites based on plasmid DNA for efficiency dye-sensitized solar cells

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