Abstract
Two-dimensional organic–inorganic hybrid perovskites (2D OIHPs) have attracted extensive attention in the field of X-ray detection due to their excellent stability compared to traditional three-dimensional OIHPs and the strong optoelectronic response to X-ray along the quantum wells. In this review, the nucleation and growth process as well as intermolecular forces for controlling out-of-plane growth are summarized along with the oriented growth mechanism. The optoelectronic properties in 2D OIHP under irradiation of X-ray are also discussed. Finally, conclusions and outlook for orientation 2D OIHP quantum wells and their challenges in application of direct X-ray detection are given. This review will provide a basic understanding on the strategy of designing 2D OIHP thick films as promising X-ray photoconductors, which may inspire the development of next-generation X-ray detectors.
Highlights
Two-dimensional organic–inorganic hybrid perovskites (2D OIHPs) have aroused increasing attention owing to their superior operational stability with unencapsulated control compared to their 3D counterparts [1,2,3]
Carrier transport in 2D OIHP is anisotropic, which is attributed to the confinement effect of the quantum well
In order to improve the application of 2D OIHP in
Summary
Two-dimensional organic–inorganic hybrid perovskites (2D OIHPs) have aroused increasing attention owing to their superior operational stability with unencapsulated control compared to their 3D counterparts [1,2,3]. The inhibition of charge transport between quantum wells is attributed quantumquantum well separating excitons into free carriers. X-ray detectors, which can be asand a natural array material for pixel electrode improve the crystallinity of functioned the 2D OIHP is an effective way to improve to the small dielectric constant of organic spacers, which is unfavorable for efficient charge matrix thin film transistor (TFT). 2D quantum well been studied as a photoconthe performance of the corresponding optoelectronics as the carriers are confined of OIHPs to obtain highly sensitive a thick film with vertically oriented ductor in X-ray detectors, which can be functioned as a natural array material for pixelin quan2D quantum well is necessary. The charge carrier transport exhibits obvious anisotropy In this years, article, focus on quantum thethe nucleation and growth process as wellstudied as intermolecular inIn2D. We believe this review will provide guidance for designing and fabricating promising X-ray photoconductors that could be used in next-generation X-ray imaging detectors
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