Achieving ordered and stable binary metal perovskite via strain engineering. (June 2018)

• Record Type: Journal Article
• Authors: Shai, Xuxia; Wang, Jinsong; Sun, Pengyu; Huang, Wenchao; Liao, Peizhe; Cheng, Feng; Zhu, Bowen; Chang, Sheng-Yung; Yao, En-Ping; Shen, Yan; Miao, Ling; Yang, Yang; Wang, Mingkui
• Is Part Of: Nano energy. Volume 48(2018)
• Page Start: 117
• Page End: 127
• Publication Date: 2018-06
• Subjects: Ordered structure -- Strain -- Crystallization -- Substitution -- Perovskite solar cell; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2018.03.047
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Strain effects on vacancies, electronic states and stability have been disclosed for perovskite structured materials (ABX3 ) including metal oxides and organic-inorganic hybrids critical for energy storage and generation. Ion substitution has been pursued as an attractive solution to alter the crystallization or induced electronic of organic-inorganic hybrid halide lead perovskite. However, the disorganized structure of perovskite result from inappropriate substitution may cause unwanted phase transition and photo-stability. Herein, we introduce crystallization of restriction ABX3 composition with moderate zinc (Zn) substitution to obtain the ordered and stable CH3 NH3 (Zn:Pb)I3-x Clx crystal, which is achieved via releasing lattice strain during an appropriate lattice constriction within BX6 octahedron. We obtained an unprecedented efficiency of 20.06% under simulated sunlight with facilitating binary metal perovskite of CH3 NH3 (1Zn:100Pb)I3-x Clx . Our results are important to realize scale up and practical applications of efficient planar perovskite solar cells. Graphical abstract: The ordered and stable binary metal perovskite can be achieved by moderate zinc (Zn) substitution of Pb, which is via an appropriate lattice constriction within BX6 octahedra to relax the lattice strain. An appreciated PCE of 20.1% can be achieved by using the restriction CH3 NH3 (1Zn:100Pb)I3-x Clx and excellent stability. fx1 Highlights: Achieving ordered and stable binary metal perovskite via strain engineering. An appropriate lattice constriction within BX6 octahedra to relax the lattice strain using the zinc (Zn) to substitute Pb. The CH3 NH3 (1Zn:100Pb)I3-x Clx based device achieving an appreciated PCE of 20.1% and excellent stability.