Thumbnail
Access Restriction
Open

Author Jia, Xianyu ♦ Hu, Ziyang ♦ Xu, Jie ♦ Huang, Like ♦ Zhang, Jing ♦ Zhang, Jianjun ♦ Zhu, Yuejin
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword MATERIALS SCIENCE ♦ ADDUCTS ♦ CRYSTAL GROWTH ♦ CRYSTALLIZATION ♦ CRYSTALS ♦ EFFICIENCY ♦ FILMS ♦ LEAD CHLORIDES ♦ LEWIS ACIDS ♦ METHACRYLIC ACID ESTERS ♦ NUCLEATION ♦ PEROVSKITE ♦ POROUS MATERIALS ♦ SOLAR CELLS ♦ TITANIUM OXIDES
Abstract Highlights: • Polymer assisted growth of high-quality perovskite films was demonstrated. • Polymer PMMA can retard nucleation and crystal growth of perovskite. • The interaction between the perovskite films and PMMA was addressed. • Planar-heterojunction solar cells with efficiencies of 15% were achieved. - Abstract: Long-chain insulating polymers dissolved in perovskite precursor solution can assemble the polymer scaffold acted as the function of TiO{sub 2} porous layer to improve the quality of the perovskite films. Here, perovskite films with high electronic quality were prepared by mediating nucleation and crystal growth. Polymer post treatment can induce Lewis acid-base reaction with PbCl{sub 2}, which alleviates the reaction velocity between PbCl{sub 2} and CH{sub 3}NH{sub 3}I, and then retard perovskite crystallization. The interactions between the perovskite films and polymer with different concentration are addressed to interpret the function and evolution of the polymer long-chains during the annealing process. These solar cells exhibit efficiency more than 15% with small variation. Our work demonstrates the value of retarding nucleation and crystal growth by Lewis acid-base adducts for high-quality perovskite films.
ISSN 00255408
Educational Use Research
Learning Resource Type Article
Publisher Date 2017-11-15
Publisher Place United States
Journal Materials Research Bulletin
Volume Number 95


Open content in new tab

   Open content in new tab