Journal
RSC ADVANCES
Volume 5, Issue 26, Pages 20521-20529Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra16253f
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Funding
- Privileged Development Program of Jiangsu High Education on New energy material science and engineering
- National Natural Science Foundation of china [51272033]
- Natural Science Foundation of the Jiangsu Higher Education Institutions of China [14KJA430001, EEKJA48000]
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As solar cell structures based on planar heterojunctions have already demonstrated very impressive advances in cost-effectiveness and performance, many different solvents are being developed and gradually adopted for high-performance inorganic-organic hybrid perovskite solar cells. Here, we introduce a simple planar cell configuration with layers prepared in a fully solution-based process, in which dimethylacetamide (DMAC) serves as an effective precursor solvent that is comparable with N,N-dimethylformamide (DMF). The use of DMAC leads to a smooth and dense perovskite film via one-step deposition, whose ideal morphology enables solar cells to obtain a high power-conversion efficiency of 15.12%. We also studied the effect of different solvents through a computation of the stabilization energy between PbI2, CH3NH3I, and solvent molecules. These results offer insight into the promising directions for the development of solvent engineering.
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