TY - JOUR
T1 - Isomer Dependence of Efficiency and Charge Recombination in Dye-Sensitized Solar Cells Using Ru Complex Dyes Bearing Halogen Substituents
AU - Chadwick, Nina
AU - Kumar, D. Kishore
AU - Ivaturi, Aruna
AU - Grew, Benjamin A.
AU - Upadhyaya, Hari M.
AU - Yellowlees, Lesley J.
AU - Robertson, Neil
N1 - Publisher Copyright:
© 2015 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.
PY - 2015/10/1
Y1 - 2015/10/1
N2 - We have synthesised Ru(H2-dcbpy)(N,N′-Y2-bpy)(NCS)2 dyes (where N = 4, 5; Y = F, Cl, Br; N is the position on the bipyridyl ring where the halogen substituent is located) for dye-sensitised solar cells. We show that careful consideration of the position of the substituent, in conjunction with the nature of the substituents, on a bpy ring is important to optimize the solar cells performance. Changing the position (from 4,4′ to 5,5′) along with the nature of the halogen (F, Cl, or Br) substituents were observed to cause changes in the electronic and spectroscopic properties of the dyes as well as influence the recombination rates at the TiO2-dyes-I-/I3- interface affecting the performance of the dyes in DSSCs. Changing the position (from 4,4′ to 5,5′) along with the nature of the halogen (F, Cl, or Br) substituents affects the electronic and spectroscopic properties of the Ru(H2-dcbpy)(N,N′-Y2-bpy)(NCS)2 dyes as well as the recombination rates at the TiO2-dyes-I-/I3- interface hence affecting the performance of the dyes in DSSCs.
AB - We have synthesised Ru(H2-dcbpy)(N,N′-Y2-bpy)(NCS)2 dyes (where N = 4, 5; Y = F, Cl, Br; N is the position on the bipyridyl ring where the halogen substituent is located) for dye-sensitised solar cells. We show that careful consideration of the position of the substituent, in conjunction with the nature of the substituents, on a bpy ring is important to optimize the solar cells performance. Changing the position (from 4,4′ to 5,5′) along with the nature of the halogen (F, Cl, or Br) substituents were observed to cause changes in the electronic and spectroscopic properties of the dyes as well as influence the recombination rates at the TiO2-dyes-I-/I3- interface affecting the performance of the dyes in DSSCs. Changing the position (from 4,4′ to 5,5′) along with the nature of the halogen (F, Cl, or Br) substituents affects the electronic and spectroscopic properties of the Ru(H2-dcbpy)(N,N′-Y2-bpy)(NCS)2 dyes as well as the recombination rates at the TiO2-dyes-I-/I3- interface hence affecting the performance of the dyes in DSSCs.
KW - Charge recombination
KW - Dye-sensitised solar cells
KW - Ruthenium complexes
KW - Solar cells
UR - http://www.scopus.com/inward/record.url?scp=84945472853&partnerID=8YFLogxK
U2 - 10.1002/ejic.201500633
DO - 10.1002/ejic.201500633
M3 - Article
AN - SCOPUS:84945472853
SN - 1434-1948
VL - 2015
SP - 4878
EP - 4884
JO - European Journal of Inorganic Chemistry
JF - European Journal of Inorganic Chemistry
IS - 29
ER -
