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Efficient hysteresis-less bilayer type CH3NH3PbI3perovskite hybrid solar cells
- Source :
- Nanotechnology. 27:024004
- Publication Year :
- 2015
- Publisher :
- IOP Publishing, 2015.
-
Abstract
- Bilayer type CH3NH3PbI3 (MAPbI3) perovskite hybrid solar cells were fabricated via a one-step spin-coating process by using solubility controlled MAPbI3 solutions of MAPbI3-DMSO (dimethyl sulfoxide) and MAPbI3-DMF (N, N-dimethylformamide)-HI. The best DMSO-bilayer device showed 1.07 ± 0.02 V V(oc) (open-circuit voltage), 20.2 ± 0.1 mA cm(-2) J(sc) (short-circuit current density), 68 ± 2% FF (fill factor), and 15.2 ± 0.3% η (overall power conversion efficiency) under the forward scan direction and 1.07 ± 0.02 V V(oc), 20.4 ± 0.1 mA cm(-2) J(sc), 70 ± 3% FF, and 15.9 ± 0.4% η under the reverse scan direction. The best HI-bilayer device had 1.08 ± 0.02 V V(oc), 20.6 ± 0.1 mA cm(-2) J(sc), 75 ± 1% FF, and 17.2 ± 0.2% η under the forward scan direction and 1.08 ± 0.02 V V(oc), 20.6 ± 0.1 mA cm(-2) J(sc), 76 ± 2% FF, and 17.4 ± 0.3% η under the reverse scan direction. The deviation of average device efficiency (η(avg)) of 20 DMSO samples and 20 HI samples was 14.2 ± 0.95% and 16.2 ± 0.85%, respectively. Therefore, the HI-bilayer devices exhibited better device efficiency and smaller J-V (current density-voltage) hysteresis with respect to the scan direction than the DMSO-bilayer devices due to the reduced recombination and traps by the formation of a purer and larger MAPbI3 perovskite crystalline film.
- Subjects :
- Materials science
Mechanical Engineering
Bilayer
Energy conversion efficiency
Analytical chemistry
Bioengineering
Nanotechnology
02 engineering and technology
General Chemistry
Hybrid solar cell
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
0104 chemical sciences
Surface coating
Hysteresis
Mechanics of Materials
General Materials Science
Electrical and Electronic Engineering
0210 nano-technology
Current density
Dimensionless quantity
Perovskite (structure)
Subjects
Details
- ISSN :
- 13616528 and 09574484
- Volume :
- 27
- Database :
- OpenAIRE
- Journal :
- Nanotechnology
- Accession number :
- edsair.doi...........7051b73f462503f925c5a1a622d65c3b