The effects of adding NHCl an air blow process on CHNHPbI(Cl) perovskite solar cells were investigated. CHNHPbI(Cl) solar cells containing various amounts of NHCl were fabricated by spin-coating. The microstructures of the resulting cells were investigated by X-ray diffraction, optical microscopy, and scanning electron microscopy. The current density-voltage characteristics of the cell were improved by adding an appropriate amount of NHCl and air blowing, which increased the photoconversion efficiency to 14%. Microstructure analysis indicated that the perovskite layer contained dense grains with strong (100) orientation, as a result of NHCl addition and air blowing. The ratio of the (100)/(210) reflection intensities for the perovskite crystals was 2000 times higher than that of randomly oriented grains. The devices were stable when stored in ambient air for two weeks.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078907 | PMC |
| http://dx.doi.org/10.1039/c7ra13582c | DOI Listing |
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