In Situ Fabrication of Highly Luminescent Bifunctional Amino Acid Crosslinked 2D/3D NH3C4H9COO(CH3NH3PbBr3)n Perovskite Films. (31st October 2016)

• Record Type: Journal Article
• Authors: Zhang, Taiyang; Xie, Liqiang; Chen, Liang; Guo, Nanjie; Li, Ge; Tian, Zhongqun; Mao, Bingwei; Zhao, Yixin
• Is Part Of: Advanced functional materials. Volume 27:Number 1(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2016-10-31
• Subjects: 2D/3D -- amino acids -- perovskites -- quantum confines -- Raman spectroscopy; Materials -- Periodicals; Chemical vapor deposition -- Periodicals; 620.11
• DOI: 10.1002/adfm.201603568
• Languages: English
• ISSNs: 1616-301X

Abstract

Abstract : The perovskite quantum dots are usually synthesized by solution chemistry and then fabricated into film for device application with some extra process. Here it is reported for the first time to in situ formation of a crosslinked 2D/3D NH3 C4 H9 COO(CH3 NH3 ) n Pb n Br3 n perovskite planar films with controllable quantum confine via bifunctional amino acid crosslinkage, which is comparable to the solution chemistry synthesized CH3 NH3 PbBr3 quantum dots. These atomic layer controllable perovskite films are facilely fabricated and tuned by addition of bi‐functional 5‐aminovaleric acid (Ava) of NH2 C4 H9 COOH into regular (CH3 NH3 )PbBr3 (MAPbBr3 ) perovskite precursor solutions. Both the NH3 + and the COO − groups of the zwitterionic amino acid are proposed to crosslink the atomic layer MAPbBr3 units via PbCOO bond and ion bond between NH3 + and [PbX6 ] unit. The characterizations by atomic force microscopy, scanning electron microscopy, Raman, and photoluminescence spectroscopy confirm a successful fabrication of ultrasmooth and stable film with tunable optical properties. The bifunctional crosslinked 2D/3D Ava(MAPbBr3 ) n perovskite films with controllable quantum confine would serve as distinct and promising materials for optical and optoelectronic applications. Abstract : A novel one‐step in situ formation of crosslinked 2D/3D NH3 C4 H9 COO(CH3 NH3 PbBr3 ) n perovskite planar films with controllable quantum confines is reported, which is comparable to solution chemistry synthesized perovskite quantum dots. The zwitterionic amino acid NH2 C4 H9 COOH (Ava) in the CH3 NH3 PbBr3 precursor can crosslink the atomic layer (CH3 NH3 PbBr3 ) n units by amino acids NH3 + and the COO − groups.