Skip to Content
MilliporeSigma
  • On the Role of Interfaces in Planar-Structured HC(NH2 )2 PbI3 Perovskite Solar Cells.

On the Role of Interfaces in Planar-Structured HC(NH2 )2 PbI3 Perovskite Solar Cells.

ChemSusChem (2015-04-18)
Dong-Jin Seol, Jin-Wook Lee, Nam-Gyu Park
ABSTRACT

Planar-structured HC(NH2 )2 PbI3 (FAPbI3 ) perovskite solar cells were prepared via a two-step deposition process. To investigate the role of interface, the perovskite morphology was intentionally modified by varying HC(NH2 )2 I concentration. Surface and grain sizes of the deposited FAPbI3 became rougher and larger as the HC(NH2 )2 I concentration decreased from 58.2 to 40.7 mM. Average photocurrent was improved but photovoltage deteriorated slightly with decreasing concentration. Consequently, the average efficiency was improved from 7.82 % to 10.70 % and the best efficiency of 12.17 % was obtained at 40.7 mM. Photoluminescence (PL) at TiO2 /FAPbI3 interface was reduced with decreasing concentration, which was, however, reversed at FAPbI3 /spiro-MeOTAD one. By correlating PL data and the photovoltaic performance, we concluded that the TiO2 /perovskite interface plays a crucial role in determining photocurrent while the perovskite/spiro-MeOTAD interface is important in governing photovoltage.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
N,N-Dimethylformamide, ACS reagent, ≥99.8%
Sigma-Aldrich
N,N-Dimethylformamide, anhydrous, 99.8%
Sigma-Aldrich
Isopropyl alcohol, ≥99.7%, FCC, FG
Supelco
1-Butanol, suitable for HPLC, 99.8%
Sigma-Aldrich
1-Butanol, for molecular biology, ≥99%
Sigma-Aldrich
Acetonitrile solution, contains 0.1 % (v/v) trifluoroacetic acid, suitable for HPLC
Sigma-Aldrich
Acetonitrile solution, contains 0.05 % (v/v) trifluoroacetic acid
Sigma-Aldrich
1-Butanol, SAJ first grade, ≥99.0%
Sigma-Aldrich
N,N-Dimethylformamide, suitable for HPLC, ≥99.9%
Sigma-Aldrich
Acetonitrile solution, contains 0.1 % (v/v) formic acid, suitable for HPLC
Sigma-Aldrich
Acetonitrile solution, contains 0.05 % (w/v) ammonium formate, 5 % (v/v) water, 0.1 % (v/v) formic acid, suitable for HPLC
Sigma-Aldrich
1-Butanol, suitable for HPLC
Sigma-Aldrich
Acetonitrile solution, contains 10.0% acetone, 0.05% formic acid, 40.0% 2-propanol
Sigma-Aldrich
N,N-Dimethylformamide, SAJ first grade, ≥99.0%
Sigma-Aldrich
Chlorobenzene, SAJ first grade, ≥99.0%
Sigma-Aldrich
Chlorobenzene, SAJ special grade, ≥99.5%
Sigma-Aldrich
N,N-Dimethylformamide, JIS special grade, ≥99.5%
Sigma-Aldrich
1-Butanol, JIS special grade, ≥99.0%
Sigma-Aldrich
N,N-Dimethylformamide, for molecular biology, ≥99%
Sigma-Aldrich
1-Butanol, anhydrous, 99.8%
Sigma-Aldrich
Chlorobenzene, anhydrous, 99.8%
Sigma-Aldrich
Acetonitrile, for chromatography
Sigma-Aldrich
2-Propanol, suitable for HPLC
Sigma-Aldrich
Acetonitrile, HPLC Plus, ≥99.9%, poly-coated bottles
Sigma-Aldrich
Acetonitrile, ≥99.8%, suitable for HPLC
Sigma-Aldrich
2-Propanol, SAJ first grade, ≥99.0%
Sigma-Aldrich
Acetonitrile, ≥99.8%, for residue analysis, JIS 300
Sigma-Aldrich
Acetonitrile, JIS special grade, ≥99.5%
Sigma-Aldrich
Acetonitrile, SAJ first grade, ≥99.0%
Sigma-Aldrich
Acetonitrile, for residue analysis, JIS 5000