TY - JOUR
T1 - Super helical Au/TiO2 nanocomposites based on plasmid DNA for efficiency dye-sensitized solar cells
AU - Yu, Mei
AU - Meng, Yanbing
AU - Zhang, Jindan
AU - Liu, Jianhua
AU - Li, Songmei
N1 - Publisher Copyright:
© 2016, Springer Science+Business Media New York.
PY - 2017/3/1
Y1 - 2017/3/1
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.
UR - https://www.scopus.com/pages/publications/84995475948
U2 - 10.1007/s10854-016-6033-9
DO - 10.1007/s10854-016-6033-9
M3 - 文章
AN - SCOPUS:84995475948
SN - 0957-4522
VL - 28
SP - 4138
EP - 4145
JO - Journal of Materials Science: Materials in Electronics
JF - Journal of Materials Science: Materials in Electronics
IS - 5
ER -