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

Abstract

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).

Facile synthesis of differently shaped, ultrathin, and aligned graphene flakes without a catalyst for highly efficient field emission

“…The FE performance of our AGF-SiNW composites is still slightly inferior to the CNT arrays we reported previously [16,25], but it is far better than lots of well-verified good emitters such as single-layer graphenes [10], p-doped graphene nanosheets with layered SnS 2 [40], printed graphene fins [41], and even some one dimensional emitters such as single-crystalline boron nanowire arrays [42], and single-crystalline Sb 2 Se 3 nanowires [43], and it has a good adhesion to the substrates, which is quite different from the CNT-based emitters prepared on Si wafers. The work function (Φ) of the above samples was obtained by using a photoelectron spectrometer, as shown in Table 1.…”

Diameter-Controlled and Surface-Modified Sb2Se3 Nanowires and Their Photodetector Performance

“…These properties are attributable to a fast transition from amorphous to crystalline state. Despite its potential in various applications, research on the synthesis and application of the Sb 2 Se 3 nanostructures has been limited by challenges, such as its low thermoelectric power factor( α 2 σ ), low spectral response ( R λ ), and low external quantum efficiency(EQE), which result in low electrical conductivity(σ, 10 −6 ~ 10 −2  Ω −1 m −1 ) in bulk state5789101112131415161718.…”

[Sb10Se10]2+, a Heteronuclear Polycyclic Polycation from a Room‐Temperature Ionic Liquid

“…[20] Recently, Sb 2 Se 3 nanowires were identified as a promising material for field emitters and photodetectors. [21] Here we report on the room-temperature synthesis, crystal structure, Raman spectrum, and chemical bonding analysis of the first antimony/selenium polycation, [Sb 10 Se 10 ] 2 + , which is stabilized in a salt-like compound by weakly coordinating [AlCl 4 ] À anions. 22] which are named after the low-temperature modification of arsenic(II) sulfide, aAs 4 S 4 .…”