Revisiting the role of oxidation in stable and high-performance lead-free perovskite-IGZO junction field-effect transistors.

Mitigating the oxidation susceptibility of Sn remains a critical issue for improving the environmental stability of lead-free perovskites. Herein, we show that the oxidized surface layer of Sn-based perovskites can be utilized to improve transistor performance, rather than being entirely suppressed. We report perovskite-IGZO junction field-effect transistors that use this oxidized layer to suppress gate current to below 10 A, enabling enhancement-mode operation.

Direct Photopatterning of Green Solvent-Processed 2D Nanomaterials for Wafer-Scale Electronics.

Solution-processed 2D nanomaterials have emerged as key building blocks for the large-scale assembly of functional electronic devices. Solution processing enables the formation of electronically active percolated networks by leveraging van der Waals (vdW) interactions between individual 2D nanosheets. While effective vdW interactions are expected to minimize potential energy barriers and contact resistances between nanosheets, undesired residues from material synthesis or device fabrication processes may remain at the interface.

Hardware Implementation of On-Chip Hebbian Learning Through Integrated Neuromorphic Architecture.

The von Neumann bottleneck and growing energy demands of conventional computing systems require innovative architectural solutions. Although neuromorphic computing is a promising alternative, implementing efficient on-chip learning mechanisms remains a fundamental challenge. Herein, a novel artificial neural platform is presented that integrates three synergistic components: modulation-optimized presynaptic transistors, threshold switching memristor-based neurons, and adaptive feedback synapses.

Modulating synaptic plasticity with metal-organic framework for information-filterable artificial retina.

Neuroprosthetics equipped with artificial synapses hold promise to address some most intricate medical problems, such as human sensory disorders. Yet, it is necessitated and of paramount importance for neuroprosthetics to be able to differentiate significant and insignificant signals. Here, we present an information-filterable artificial retina system that integrates artificial synapses with a signal-integration device for signal perception and processing with attention.

Enhancing Efficiency and Stability of Tin Halide Perovskite Light-Emitting Diodes via Engineered Alkali/Multivalent Metal Salts.

Sn-based perovskite light-emitting diodes (PeLEDs) have emerged as promising alternatives to Pb-based PeLEDs with their rapid increase in performance owing to the various research studies on inhibiting Sn oxidation. However, the absence of defect passivation strategies for Sn-based perovskite LEDs necessitates further research in this field. We performed systematic studies to investigate the design rules for defect passivation agents for Sn-based perovskites by incorporating alkali/multivalent metal salts with various cations and anions.