A Polymer Strategy toward High-Performance Multifunctional Perovskite Optoelectronics: From Polymer Matrix to Device Applications

摘要

Perovskites with superior photophysical properties and simple solutionprocessing are widely applied in solar cells, light-emitting diodes, photodetectors,and lasers. However, the target of high-performance multifunctionalperovskite optoelectronics is hampered by their intrinsic properties,such as the undesired crystallization rate, ease of ion migration, poor stability,and high brittleness. A perovskite–polymer matrix, including a perovskite–polymer composite and a polymer–perovskite–polymer heterostructure, isadopted to handle the above issues. This review starts with the categorizedpolymer addition methods and the relevant polymer distribution for a perovskite–polymer matrix. In addition, the high performance originating from thecontrolled crystallization, stress regulation, inhibited ion migration, defectpassivation, reduced interfacial recombination, and multifunctions from theenhanced stability, mechanical robustness, self-healing ability, controllabledimension, and novel optical properties are then summarized. Meanwhile,the working mechanisms of a perovskite–polymer matrix in perovskite optoelectronicsare also discussed. Finally, promising guidelines and proposalsare provided to promote the commercialization of high-performance multifunctionalperovskite optoelectronics.