A high-responsivity CsPbBr₃ nanowire photodetector induced by CdS@Cd_xZn_1−xS gradient-alloyed quantum dots

Abstract

Benefitting from the excellent thermal and moisture stability, inorganic halide perovskite materials have established themselves quickly as promising candidates for fabricating photoelectric devices. However, due to high trap state density...

High performance metal-semiconductor-metal ultraviolet photodetector based on mixed-dimensional TiO2/CsPbBr3 heterostructures

“…The XRD patterns given in figure 2(b) present that both the TiO 2 and CsPbBr 3 are in polycrystalline phase. The characteristic diffraction peaks at 15.32°and 30.73°can be indexed to the (100) and (200) planes of CsPbBr 3 perovskite, which is consistent with the results reported in the literature [29,30]. The diffraction peaks at 36.13°, 54.39°, 69.09°, and 69.92°can be indexed to the (101), ( 211), (301), and (112) planes of rutile TiO 2 [31].…”

High-performance hierarchical O-SnS/I-ZnIn2S4 photodetectors by leveraging the synergy of optical regulation and band tailoring

“…t lifetime /t trans , where t lifetime is the excess carrier lifetime and t trans is the transit time) prior to recombination. [45][46][47][48][49] As a consequence, a large EQE exceeding 100%, a critical ceiling for self-powered photodetectors, 50,51 is triggered.…”

Transition Metal Ions Influence the Performance of Photodetector of Two‐Dimensional CdS Nanoplatelets

“…The high responsivity of Cu‐doped CdS NPLs arises due to improved absorption in the visible region which helps to absorb more incident light at the active layer of the devices. Specific detectivity ( D *) is derived using Equation , [47] $$$\vcenter{\openup.5em\halign{$\displaystyle{#}$\cr {D}^{^{\ast}}={{R}\over{\sqrt{2q{J}_{d}}}}\hfill\cr}}$$$ …”

“…The high responsivity of Cudoped CdS NPLs arises due to improved absorption in the visible region which helps to absorb more incident light at the active layer of the devices. Specific detectivity (D*) is derived using Equation (3), [47] D * ¼ R ffi ffi ffi ffi ffi ffi ffi ffi ffi…”