Effects of Mn, Cl co-doping on the structure and photoluminescence properties of novel walnut-shape MAPb0.95Mn0.05I3-xClx films. Issue 1 (January 2019)

• Record Type: Journal Article
• Authors: Guan, Xin; Ge, Xin; Wang, Ce; Wang, Fengyou; Liu, Xiaoyan; Cao, Jian; Fan, Lin; Yang, Lili
• Is Part Of: Ceramics international. Volume 45:Issue 1(2019)
• Page Start: 468
• Page End: 473
• Publication Date: 2019-01
• Subjects: Doped organometal perovskite film -- Optical properties, enlarged bandgap energy -- Enhanced PL intensity; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.09.191
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: The novel walnut shape MAPb0.95 Mn0.05 I3-x Clx film was successfully synthesized by a one-step method followed by chlorobenzene anti-solvent treatment. The bandgap energy and PL intensity of perovskite film can be effectively tuned by Mn and Cl co-doping. The enlarged bandgap energy is mainly attributed to the synergistic effect of strengthened Pb-I interaction, Cl incorporation and smaller electronegativity of Mn dopants. The stronger coupling between the Mn d- and Pb p-bands, extended carriers diffusion length and more emitting defect-associated states caused by Mn and Cl co-doping are the main reasons for the enhancing PL intensity of MAPb0.95 Mn0.05 I3-x Clx walnut shape film. This work not only helps to in-depth understand the correlation between co-doping elements and optical properties of nanostructured perovskite films, but also provides important strategy for future designing the lower-toxic nanostructured perovskite materials with enhanced electrical and optical properties.