TY - JOUR
KW - Perovskite
KW - Titanium dioxide
KW - Perovskite solar cells
KW - Display devices
KW - Photocurrents
KW - Photovoltaic effects
KW - 2-Methoxyethanol
KW - Infrared regions
KW - Light-harvesting
KW - Mesoporous layers
KW - Photocurrent density
KW - Photovoltaic devices
KW - Short-circuit photocurrent
KW - Triphenyl amines
KW - Solar cells
AU - M.H Kumar
AU - S Dharani
AU - W.L Leong
AU - P.P Boix
AU - R.R Prabhakar
AU - T Baikie
AU - C Shi
AU - H Ding
AU - Ramamoorthy Ramesh
AU - M Asta
AU - M Graetzel
AU - S.G Mhaisalkar
AU - N Mathews
AB - A study was conducted to demonstrate that high photocurrent densities of more than 22 mAcm-2 can be attained by utilizing CsSnI 3 as an absorber in solid state perovskite solar cells. Photovoltaic devices with the configuration FTO/compact TiO2 / mesoporous TiO2 /CsSnI3/HTM/Au were prepared. CsSnI3 layers were spin coated on to -300 nm thick mesoporous layers. Two HTMs ? 4, 4', 4''-tris (N,N-phenyl-3-methylamino) triphenylamine (m-MTDATA) and Spiro-OMeTAD were employed for this study. Using DMF and 2-methoxyethanol as solvents for the CsSnI3 resulted in the formation of large islands on the TiO2 scaffold, with significant areas of exposed TiO2.Pristine CsSnI3 as the light absorber does not result in a functional photovoltaic device while compositions with added SnF2, display photovoltaic effect. The unprecedented short circuit photocurrents observed from a pure Sn-based perovskite system reflect the enhanced light harvesting in the infrared region of the solar spectrum.
BT - Advanced Materials
DO - 10.1002/adma.201401991
LA - eng
M1 - 41
N1 - cited By 427
N2 - A study was conducted to demonstrate that high photocurrent densities of more than 22 mAcm-2 can be attained by utilizing CsSnI 3 as an absorber in solid state perovskite solar cells. Photovoltaic devices with the configuration FTO/compact TiO2 / mesoporous TiO2 /CsSnI3/HTM/Au were prepared. CsSnI3 layers were spin coated on to -300 nm thick mesoporous layers. Two HTMs ? 4, 4', 4''-tris (N,N-phenyl-3-methylamino) triphenylamine (m-MTDATA) and Spiro-OMeTAD were employed for this study. Using DMF and 2-methoxyethanol as solvents for the CsSnI3 resulted in the formation of large islands on the TiO2 scaffold, with significant areas of exposed TiO2.Pristine CsSnI3 as the light absorber does not result in a functional photovoltaic device while compositions with added SnF2, display photovoltaic effect. The unprecedented short circuit photocurrents observed from a pure Sn-based perovskite system reflect the enhanced light harvesting in the infrared region of the solar spectrum.
PB - Wiley-VCH Verlag
PY - 2014
SP - 7122
EP - 7127
T2 - Advanced Materials
TI - Lead-free halide perovskite solar cells with high photocurrents realized through vacancy modulation
VL - 26
SN - 09359648
ER -