Ethylcellulose‐Encapsulated Inorganic Lead Halide Perovskite Nanoparticles for Printing and Optoelectronic Applications. (11th May 2022)

• Record Type: Journal Article
• Authors: Kumar, Ashish; Swami, Sanjay Kumar; Singh, Vidya Nand; Gupta, Bipin Kumar; Sinha, Om Prakash; Srivastava, Ritu
• Is Part Of: Particle and particle systems characterization. Volume 39:Number 6(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-05-11
• Subjects: anti‐counterfeiting -- encapsulate -- ethyl cellulose -- hot injection methods -- perovskite nanoparticles; Particles -- Periodicals; 620.43
• DOI: 10.1002/ppsc.202100250
• Languages: English
• ISSNs: 0934-0866

Abstract

Abstract: Inorganic lead halide perovskite nanoparticles (NPs) have attracted attention for next‐generation optoelectronics and anti‐counterfeiting applications. The fully inorganic NPs get degraded in polar solvents resulting in poor stability. These also tend to degrade under exposure to high temperatures resulting in obstacles to application in reliable anti‐counterfeiting and optoelectronics applications. The encapsulation of perovskite NPs with ethyl cellulose (EC) as a polymer matrix to overcome these obstacles is explored using a facile solution blending technique followed by ultra‐sonication and characterization. These NPs demonstrate enhanced photoluminescence (PL) intensity, improved color clarity, and considerable stability. Along with organic binders, they can be used in developing printable ink for making patterns. A logo coated with CsPbBr3 + EC and CsPbBr1.5 I1.5 + EC exposed in normal light and UV light (365 nm) shows a clear image that becomes blue‐green and yellow color. Additionally, the effect of light on the current density–voltage characteristics of the size‐dependent encapsulated NPs shows that photocurrent has dramatically improved over 5.14 times in CsPbBr3 + EC and 1.68 times in CsPbBr1.5 I1.5 + EC compared to that of pristine one. These results demonstrate its potential uses for several applications such as luminescent printing applications, sensors, and optoelectronic applications. Abstract : Synthesis of the perovskite nanoparticles (NPs) encapsulated by polymer matrix ethyl cellulose (EC) using a facile ultra‐sonication method. These NPs demonstrate enhanced Photoluminescence intensity, improved color purity, and stability in ambient oxygen. These perovskite NPs encapsulated by ethyl cellulose, which can be used for anti‐counterfeiting and optoelectronic applications.