Formamidinium lead iodide perovskite (FAPbI3) is widely employed in photovoltaic area because of its better stability and high potential of efficiency compared to methylammonium lead iodide (MAPbI3). However, the α-phase FAPbI3 that is beneficial for high performance solar cells is not stable in air. Here, N-butylammonium Iodide (BAI) was used to slice PbI2 precursor via guest effect. Subsequently, this BAI-PbI2 film transforms to FAPbI3 through the reaction with FAI solution. Meanwhile, the existence of BA accelerates the formation of α-phase FAPbI3. We find the α-phase FAPbI3 film based on BAI-PbI2 precursor film shows much better stability in air, the better surface morphology and crystallization than those of the control FAPbI3 film based on normal PbI2 precursor. The obtained stable α-phase FAPbI3 films are potential excellent materials for stable and high performance perovskite optoelectronic derives.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.