Single‐Crystalline Sb2Se3 Nanowires for High‐Performance Field Emitters and Photodetectors

Single-crystalline Sb2Se3 nanowires demonstrate excellent field-emission and photodetector properties for the first time. They show low turn-on (2.6 V μm−1) and threshold voltages (4.9 V μm−1) and a high enhancement factor (3466). The individual Sb2Se3 nanowire photodetectors exhibited a marked response to visible light (Rλ and EQE are as high as ∼8.0 A/W and ∼1650%, with a response time of less than 0.3 s).