Deyang Ji

Oct 15, 2024 | cell.com | Nano-Bionics Chinese Academy |Deyang Ji

Keywords wafer-scale arrays organic phototransistor interface engineering low-light detection high performance Introduction Within the realms of biomedicine, environmental sensing, and security operations, it is necessary to extract valuable information from weak optical signals.1 Photodetectors are required to exhibit an amalgamation of attributes such as high performance, high sensitivity, low noise, and a wide dynamic range to suit diverse application scenarios.2,3,4 Until now, most...

Jan 20, 2024 | nature.com | Zhongwu Wang |Deyang Ji |Xiaotao Zhang |Huanli Dong |Yi Cui |Xiaosong Chen | +1 more

AbstractOptoelectronic properties of semiconductors are significantly modified by impurities at trace level. Oxygen, a prevalent impurity in organic semiconductors (OSCs), has long been considered charge-carrier traps, leading to mobility degradation and stability problems. However, this understanding relies on the conventional deoxygenation methods, by which oxygen residues in OSCs are inevitable. It implies that the current understanding is questionable.