A perovskite/porous GaN crystal hybrid structure for ultrahigh sensitivity ultraviolet photodetectors

Abstract

Integration of perovskite with third-generation semiconductors has attracted extensive attention in numerous fields, such as wireless communication system and spatial optical communications. Embedding methyl lead bromide perovskite (CH3NH3PbBr3 or MAPbBr3)...

Effect of Structural Morphology and Material Factors on Radiative Properties of Hybrid Perovskite/Nanoporous GaN Hierarchical Composite Structure

“…The plan-view scanning electron microscopy images are shown in Figure d,e. The MAPbX 3 /nanoporous GaN composite structure has been synthesized by previously reported methods . The band alignment type of the perovskite/GaN hierarchical composites considered in this manuscript is type-II. − …”

“…The MAPbX 3 /nanoporous GaN composite structure has been synthesized by previously reported methods. 37 The band alignment type of the perovskite/GaN hierarchical composites considered in this manuscript is type-II. 37−39 The ellipsometric measurements were performed with the RC2 ellipsometer purchased from J.A.…”

“…In this section, regarding our previously designed structure, 37 the MAPbCl 3 −NP Si-GaN/MAPbCl 3 −GaN layered composite calculation model is constructed. As shown in the reflection spectrum of NP GaN (Figure 4a,b), the pore sizes and angles do not affect the reflection peak at 365 nm.…”

Research progress in the postprocessing and application of GaN crystal

“…Therefore, it is widely used in light-emitting diodes (LEDs), ultraviolet detectors, and other fields. 1–5 In addition, the GaN crystal can also be applied to power electronic devices with miniaturization, high integration, high power conversion efficiency, fast switching speed, and high power density, which has broad application prospects in laser display, 5G communication, household lighting, and smart grids. 6,7…”

Enhanced On–Off Ratio for Ni(OH)2·0.75H2O-MAPbBr3-Based Photodetectors

“…1−5 Photodetector of perovskite provides a viable method to interpret unreadable optical information by converting it to an electrical signal. 1,2,6,7 However, the halide migration problem of perovskite leads to a high dark current (J dark ), which limits the dynamic range of the detector and increases the noise level, thus worsening the on− off ratio (J on /J off ), a key parameter for evaluating the photodetector. 8−10 Organic−inorganic halide perovskites (OIHPs) are of great interest to researchers because of their unique optoelectronic properties.…”