3rd International Nanotechnology Conference & Expo
May 7-9, 2018, Rome, Italy
The Study of Perovskite Solar Cell with Solvent Substitution
Department of Chemical Engineering, National Taiwan University of Science and Technology, Taiwan
In this study, we developed a method to prepare a high-quality CH3NH3PbI3 layer based on solvent (isopropanol) substitution. The difference between the IPA-substitution method with the two-stepsequential coating method lies in the deposition of PbI2 film via solvent IPA-substitution by us instead of a conventional anneal-treatment developed by others. First, we discussed the effects of IPA-substitution on the PbI2 film morphology, crystallization, growth and device characteristics by Scanning Electron Microscope (SEM) and X-ray diffraction (XRD). Secondly, a PbI2-IPA nanostructure was endowed with affluent channels that are convenient for inserting CH3NH3I and enhancing the complete conversion. As a result, the device achieved a high power conversion efficiency of 17.84% and exhibited high reproducibility.
