Dye-sensitized halide perovskite: A case study on calcein dye. (October 2020)

• Record Type: Journal Article
• Authors: Chen, Yuxiao; Zhang, Lei; Miao, Juhong; Li, Jingfa
• Is Part Of: Dyes and pigments. Volume 181(2020)
• Publication Date: 2020-10
• Subjects: Dye -- Halide perovskite -- CH3NH3PbI3 -- Calcein -- Anchor -- Photoelectrochemical; Dyes and dyeing -- Periodicals; Pigments -- Periodicals; 667.2
• DOI: 10.1016/j.dyepig.2020.108608
• Languages: English
• ISSNs: 0143-7208

Abstract

Abstract: Dye-sensitized halide perovskite systems have recently been demonstrated as promising candidates for photoelectrochemical devices. In this manuscript, we focus on the calcein dye-sensitized halide perovskite systems for aqueous-based photoelectrochemical system. This is achieved via the deposition of the commercially available self-assembled dye layer at the CH3 NH3 PbI3 /TiO2 interface. Enhanced optoelectronic properties are obtained when the calcein dye is incorporated in the perovskite-based material. The photoelectrode consisting of the calcein/CH3 NH3 PbI3 hybrid film produces a photocurrent value that is orders of magnitude higher than that from a bare CH3 NH3 PbI3 photoelectrode under the same condition. In addition, the calcein dye improves the light-emitting properties of the CH3 NH3 PbI3 -based photoelectrode in water. The first-principles calculations suggest that multiple Lewis-acid-base coordination sites are available between the calcein dye and the halide perovskite substrate, such that the calcein dye could simultaneously enhance the light harvesting properties and passivates the perovskite electrode. This manuscript highlights the potentials of the multifunctional dye-sensitized halide perovskite materials, and facilitates the convergent understanding of halide perovskite materials for integrated optoelectronic devices. Highlights: Calcein/CH3 NH3 PbI3 produces a significantly enhanced photocurrent. Calcein improves the light-emitting properties of CH3 NH3 PbI3 in water. Multiple Lewis acid-base coordination sites (H⋯I and O⋯Pb) are available.