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Investigations on the role of mixed-solvent for improved efficiency in perovskite solar cell.
- Source :
-
Journal of Applied Physics . 2017, Vol. 122 Issue 23, p235302-1-235302-5. 5p. - Publication Year :
- 2017
-
Abstract
- The morphology of the spin-coated photoactive layer is one of the major factors affecting the performance of perovskite solar cells. In this work, we have employed a mixed-solvent strategy to obtain a high quality MAPbI3 (MA=CH3NH3) perovskite film, without pinholes and reduced grain boundaries. Perovskite films formed with single and mixed-solvents are systematically characterized for their optical, structural, and morphological properties using UV-vis absorption, photoluminescence (PL), X-ray diffraction (XRD), atomic force microscopy (AFM), and scanning electron microscopy (SEM) tools. The power conversion efficiency (PCE) of the devices fabricated using the mixed-solvent showed better performance than the devices made using the single solvent. The best-optimized mixed-solvent perovskite film exhibited a PCE of 15.2% with uniform film coverage on the substrate, better charge generation, and a high hole mobility of 1.16X10-4cm2/ Vs. The disparities in photovoltaic properties have been analyzed with the intensity dependent current density-voltage (J-V), transient photovoltage (TPV), and relationship between photocurrent (Jph) and effective voltage (Veff). [ABSTRACT FROM AUTHOR]
- Subjects :
- *SOLVENTS
*PEROVSKITE
*SOLAR cells
*MICROSCOPY
*PHOTOLUMINESCENCE
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 122
- Issue :
- 23
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 126931937
- Full Text :
- https://doi.org/10.1063/1.4998630