Polymeric carbon nitrides have presented the massive potential for photocatalytic CO2 reduction, especially the crystalline allotrope, namely, poly (triazine imide) (PTI), that holds extended conjugation for fast charge exciton dissociation....

High-quality single-crystalline ternary (Sb 1-x Bi x ) 2 Se 3 nanowires (NWs) ( x = 0-0.88) are synthesized by chemical vapor deposition. Nanowires with x from 0 to 0.75 are indexed as an orthorhombic structure. With increasing Bi incorporation ratio, (Sb 1-x Bi x ) 2 Se 3 NWs exhibit remarkable photoresponsivities, which originate from growing surface Se vacancies and augmented oxygen chemisorptions. Notably, spectra responsivity and external quantum effi ciency of an (Sb 0.44 Bi 0.56 ) 2 Se 3 NW photodetector reach as high as ≈8261.4 A/W and ≈1.6 × 10 6 %, respectively. Those excellent performances unambiguously demonstrate that Sb-Bi-Se NWs are promising for the utilizations of highsensitivity and high-speed photodetectors and photoelectronic switches.

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