Transient Measurements and Simulations Correlate Exchange Ligand Concentration and Trap States in Colloidal Quantum Dot Photodetectors

Strain-Engineering-Driven Photomechanical–Photoelectric Coupled Flexible Photodetector Based on Hexagonal Silicon Nanowire Films

“…Detectors for broadband optical signals consist of two main classes. One is narrow band gap semiconductors (such as germanium, , group III–V/II–VI compounds, , other narrow band gap two-dimensional materials, and colloidal quantum dots with tunable band gaps , ) and the other is all-silicon detectors which utilize two-photon absorption, , sub-band gap absorption, , surface-state absorption, , and optically assisted carrier tunneling absorption physical effects of silicon to achieve light absorption below the energy gap. Considering requirements such as room-temperature operation, nontoxicity, and low cost, all-silicon detectors offer unparalleled advantages over these narrow band gap semiconductor detectors.…”

Amine-Free CsPbBr3 Perovskite Nanocrystals with a Near-Unity Photoluminescence Quantum Yield for a Superfast Photodetector

“…Several processes have been used to reduce the defects in CsPbBr 3 PNCs with various sizes and morphologies to improve device performance. ,− In this study, an amine-free CsPbBr 3 PNC-based photodetector has been used as a proof of application and found that the device has a superfast light detection ability. Recently, several studies have explained briefly the superfast solution-processed photodetectors. − The rise/fall times for amine-free CsPbBr 3 -based photodetector were observed to be very short. The excess halides in PNC photodiodes reduce the response speed due to charge trapping in the adhesion layer …”

“…Recently, several studies have explained briefly the superfast solution-processed photodetectors. − The rise/fall times for amine-free CsPbBr 3 -based photodetector were observed to be very short. The excess halides in PNC photodiodes reduce the response speed due to charge trapping in the adhesion layer …”