Paper Electronics Utilizing Screen Printing and Vapor Phase Polymerization

Abstract

The rise of paper electronics has been accelerated due to the public push for sustainability. Electronic waste can potentially be avoided if certain materials in electronic components can be substituted for greener alternatives such as paper. Within this report, it is demonstrated that conductive polymers poly(3,4‐ethylenedoxythiophene) (PEDOT), polypyrrole, and polythiophene, can be synthesized by screen printing combined with vapor phase polymerization on paper substrates and further incorporated into functional electronic components. High patterning resolution (100 µm) is achieved for all conductive polymers, with PEDOT showing impressive sheet resistance values. PEDOT is incorporated as conductive circuitry and as the active material in all‐printed electrochromic displays. The conductive polymer circuits allow for functional light emitting diodes, while the electrochromic displays are comparable to commercial displays utilizing PEDOT on plastic substrates.

Biphenyl Dicarboxylic-Based Ni-IRMOF-74 Film for Fast-Switching and High-Stability Electrochromism

“…Electrochromic devices (ECDs), which can effectively achieve dynamic control of solar heat and lighting through voltage or current, are green, low-carbon intelligent devices and have fascinating applications in information displays and smart windows, etc. − Generally speaking, the optical performance of ECDs is mainly determined by the electrochromic layer, which can be divided into two main types: inorganic materials and organic materials. − Organic materials display fast switching and multiple color changes, but their electrochromic cycle stability is not ideal due to the lack of molecular crystallinity and weak bonding between the coating and conductive substrate. In contrast, inorganic materials exhibit remarkable electrochromic stability due to their strong crystallinity and chemical stability.…”