To enhance the performance of all-inorganic perovskite photodetectors via constructing both bilayer heterostructure and bipolar carrier transporting channels

Abstract

To enhance the device performance of all-inorganic perovskite photodetectors via constructing both bilayer heterostructure and bipolar carrier transporting channels.

Highly Efficient Self-Trapped Exciton Emission of a (MA)4Cu2Br6 Single Crystal

“…In the past few years, lead halide type perovskites (APbX 3 , where A = CH 3 NH 3 + , CH­(NH 2 ) 2 + , or Cs + and X = Cl, Br, or I) have shown a variety of superior characteristics, including a high photoluminescence quantum yield (PLQY), a narrow full width at half-maximum, a wide color gamut, and excellent photoelectric properties, which is why they have been widely studied especially in solar cells, photodetectors, light-emitting diodes, scintillators, lasing, etc. − Unfortunately, Pb-based perovskites typically suffer from limiting stability against moisture and heat, as well as the potential toxicity of lead, which severely restricts their practical applications. − …”

One-pot synthesis of novel ligand-free tin(ii)-based hybrid metal halide perovskite quantum dots with high anti-water stability for solution-processed UVC photodetectors

“…The rising time is defined as the time required for the photocurrent to increase from 10% to 90% of the maximum photocurrent, and the falling time is defined as the time required for the photocurrent to decrease from 90% to 10%. 49 From Fig. 6(b), we can obtain the rising time of 62.813 s and a decay time of 66.359 s for this UVC photodetector Au/ TBASnCl 3 /Au under 1.2 mW cm −2 254 nm illumination at −5 V. From Fig.…”

Status and Outlook of Metal–Inorganic Semiconductor–Metal Photodetectors

“…The responsivity of MSM‐PDs can be boosted by structuring the photosensitive layer, [ 248,257,258 ] introducing Bragg mirrors or noble metals as reflector, [ 259–262 ] exciting propagating or located SPPs, [ 263–266 ] and introducing some carrier transport materials. [ 190,267–269 ]…”

“…Such a high performance was attributed to the synergistic effect of the fast carrier extraction and the modulation of Schottky barriers with the incorporation of MoS 2 . In 2019, Yang and co‐workers fabricated an MSM‐PD consisting of Au/CsPbBr 3 :ZnO nanoparticles/MoO 3 /Au, [ 269 ] in which the colloidal ZnO nanoparticles were mixed within the CsPbBr 3 layer and a MoO 3 layer was placed underneath. This formed a series of bipolar carrier transporting channels for both electrons and holes.…”