Inkjet printing for scalable and patterned fabrication of halide perovskite-based optoelectronic devices

Abstract

The emergence of halide perovskites (HPs) has attracted significant research interest due to their fascinating optoelectronic properties, such as super absorption coefficient, tunable emission, and high color purity. With the...

Multipass Inkjet Printing of Lead Halide Perovskite Pixels onto Flexible Substrates

“…As reported previously, there is a significant effect of the substrate on the nucleation and crystallization process of perovskite, such as substrate roughness and wettability. ,, Therefore, to evaluate the impact of the substrate and to find the optimal surface properties for the deposition of homogeneous, compact, and high PL yield perovskite deposits, bare PET and PET coated with PS, PMMA, PEDOT-PSS, and mesoporous silica were selected. Quality assessment of the printed 5 × 5 pixel arrays was performed with a Leica TSC SP5 confocal fluorescence microscope.…”

“…The ink parameters and Z number (or Ohnesorge number, Oh, where Z = 1/Oh) were used to characterize drop formation, as shown in Table . The Z number of the precursor solution, which was calculated following eq S1 in the Supporting Information is in the range of 1 < Z < 10, suggesting a good printability. , …”

Intrinsic stability of perovskite materials and their operational stability in light-emitting diodes

“…8 Moreover, metal halide perovskites (MHPs) can be synthesized, and electronic devices can easily be fabricated using solution-processed techniques. 1 Overall, flexible, cost-effective, and large-area devices can be realized using MHPs.…”

“…Organic-inorganic hybrid perovskite (OIHP) hybrids have attracted researchers' attention around the globe for various optoelectronic applications such as photovoltaics, photosensors, light emitting diodes (LEDs), transistors, and others. [1][2][3][4] These hybrids possess excellent properties such as narrow band emissions (full width at half maximum B20 nm), spectral tunability of the entire visible range, high charge carrier mobility, high photoluminescence quantum yield (PLQY), strong quantum confinement, long charge carrier diffusion length, tunability of properties via doping and others. Interestingly, the OIHP hybrids with desirable properties can replace the present conventional materials such as InN, GaN, AlN, polymers, organic materials, and others for next generation flexible and smart electronic devices.…”

“…1b shows the twodimensional (2D) layered structure of MHPs. 2D structures of MHPs are described as Ruddlesden-Popper perovskite (RPP) 1,14,15 or Dion-Jacobson (D-J) structures. [16][17][18] These perovskite structures with the general formula R 2 A nÀ1 B n X 3n+1 consist of R as bulky mono/diammonium cations (R-P/D-J), which act as an insulating layer between inorganic A nÀ1 B n X 3n+1 frameworks.…”