n-Ink provides several high-performing n-type conductive ink formulations which are compatible with existing solution-deposition processes for printed electronics, to improve the performances of existing Internet of Things, Bioelectronics and energy applications. Current technology is relying on only p-type (positive) conducting inks. To make this technology more efficient and high-performing n-type (negative) inks are necessary as a complement to the p-type ink functionality (mimicking CMOS technology). We, at n-ink, have invented, patented, and developed a sustainable approach for our n-type inks, including sustainable synthesis protocols.