| Full text | |
| Author(s): |
de Morais, Andreia
;
Flacker, Alexander
;
Hirata, Marcelo Kioshi
;
Teixeira, Ricardo Cotrin
;
de Freitas, Jilian Nei
Total Authors: 5
|
| Document type: | Journal article |
| Source: | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS; v. 35, n. 21, p. 11-pg., 2024-07-01. |
| Abstract | |
In this study, we propose a plating bath for electroless nickel-phosphorous (Ni-P) simultaneous deposition on both surfaces of a flexible polyethylene terephthalate (PET) substrate coated on one side with indium tin oxide (ITO). First a nucleation step is performed with tin(II) chloride and palladium(II) chloride. After this, a bath containing nickel ion source reducing agent, complexing and stabilization agents is used to deposit the Ni-P layer. The nucleation treatment used was the same for both ITO and PET surfaces, which results in a low-cost process compared to other methods. Several immersion times in the electroless bath were used to obtain the Ni-P layers onto PET and ITO surfaces. Structural, morphological and electrical properties of the samples were evaluated by optical microscopy, scanning electron microscopy, atomic force microscopy, energy dispersive spectroscopy, X-ray photoelectron spectroscopy, profilometry and four-point probe method. The Ni-P film deposition rate on the PET surface (112.2 nm/min) was higher than on the ITO surface (88.8 nm/min). The effect of the annealing temperature on the electrical and morphological properties of the Ni-P films were also investigated. After heat treatment (120 degrees C, 1 h), the Ni-P particles coalesced, resulting in more compact films, with reduced surface roughness, and with improved conductivity. Our approach enables an innovative dual function technological solution: the Ni-P/ITO side can be used as flexible current collectors in high-power output devices (e.g., emerging photovoltaic devices such as perovskite solar cells), whereas the PET side can be used for flexible current collectors in low-power output devices (e.g., sensors and capacitors). Both surfaces can be used concomitantly, combining the two kinds of application (e.g., integration of two types of electronic devices using a unique substrate). (AU) | |
| FAPESP's process: | 17/11986-5 - Generation and storage of New Energy: bringing technological development for the country |
| Grantee: | Ana Flávia Nogueira |
| Support Opportunities: | Research Grants - Research Centers in Engineering Program |