Guangjiu Pan

1 Introduction Hybrid organic–inorganic halide perovskite solar cells (PSCs) are considered as the most promising next-generation light-harvesting technology due to their remarkable advantages over silicon photovoltaics, such as longer charge carrier lifetimes (>1 µs), higher power conversion efficiencies (PCEs), lower fabrication costs, and tunable direct bandgaps (1.2–2.3 eV) [1-3].

1. Introduction Click to copy section linkSection link copied! Composites containing both hard and soft magnetic materials are unique systems that advantageously combine the magnetic properties of the constituent materials. Through the combination of the high saturation magnetization of the soft magnetic material with the large coercivity of the hard magnetic material, enhanced magnetic properties can be achieved.

Abstract Artificial nerves that are capable of sensing, processing and memory functions at bio-realistic frequencies are of potential use in nerve repair and brain–machine interfaces. n-type organic electrochemical transistors are a possible building block for artificial nerves, as their positive-potential-triggered potentiation behaviour can mimic that of biological cells.