Abstract
We demonstrate a novel one-step solution approach to prepare perovskite CH3NH3PbI3 films by adding CH3NH3Cl (or MACl) to the standard CH3NH3PbI3 precursor (equimolar mixture of CH3NH3I and PbI2) solution. The use of MACl strongly affects the crystallization process of forming pure CH3NH3PbI3, leading not only to enhanced absorption of CH3NH3PbI3 but also to significantly improved coverage of CH3NH3PbI3 on a planar substrate. Compared to the standard one-step solution approach for CH3NH3PbI3, using MACl improves the performance of CH3NH3PbI3 solar cells from about 2% to 12% for the planar cell structure and from about 8% to 10% for the mesostructured device architecture. Although we find no significant effect of using MACl on charge transport and recombination in mesostructured perovskite cells, the recombination resistance for planar cells increases by 1–2 orders of magnitude by using MACl. These results suggest that this new one-step solution approach is promising for controlling CH3NH3PbI3 growth to ach...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
