The most striking feature of plant photosynthetic systems is that the electron transfer efficiency reaches 95% between photosystem I and photosystem II under mild conditions. [3] At the same time, the charge transfer efficiency of the photoexcited protein complex to the active interfacial reaction site has been significantly increased through an electron transport medium to achieve high catalytic efficiency. [4] Therefore, inspired by nature, high charge separation is achieved by constructing a biomimetic Z-scheme system. [5] However, the poor interfacial contact in the Z-scheme acting as a "wall" between multiphase seriously prevent efficient electron interaction, such as inefficient and traditional redox pairs (such as I − /IO 3 − , Fe 3+ /Fe 2+ , and [Co(bpy) 3 ] 3+ / 2+ ) severely limit electron transport. [6] Therefore, it is still critical to the practical design and accurately regulates the hybrids at the atomic scale to ensure the efficient charge transport and achieve an efficient and stable photocatalytic system.In the past few years, 2D materials with ultrathin thickness have constructed a clear structure-activity relationship given the atomic level. [7] The unique 2D ultrathin polymeric carbon nitride nanosheets (CNS) give materials good interfacial Charge separation and transfer are central issues dominating the underlying energy conversion mechanisms of photosynthetic systems.Here, inspired by nature, a multi-interfacial engineering strategy for constructing a strongly coupled interactive transmission network for stable and efficient photo catalytic hydrogen production is proposed. A multivariate all-solidstate Z-scheme with intimate electron interactions is formed through strong bridging bonds due to Ti orbit modulation and stacking hybridization between hybrids. The electron couple structure realizes an efficient carrier directional separation and transfer, enabling the charge separation efficiency to be enhanced dramatically by 7.2 times. Furthermore, the resulting material provides a highly stable photocatalytic hydrogen activity, up to 15.29 mmol h −1 g −1 , 18.8 times higher than pure carbon nitride, surpassing many reported photocatalysts. This work represents a significant development and helps develop a sound foundation for future design principles in accelerating charge transfer.

Holography can produce the most real threedimensional (3D) image, and is considered as the ultimate 3D display technology. However, compared with other display technologies, it has not been practically available in video display so far due to low refresh rate. To realize dynamic holographic display, photosensitive material doped liquid crystal (LC) has been discovered and deeply investigated because of superior photorefractive and photoelectric properties. In this work, we present a dynamic holographic display using LC film doped with perovskite (CsPbBr 3 ) nanocrystal (NC) as the photorefractive material. The dependence of diffraction efficiency and response time on doping concentration, recording beam power and applied voltage are investigated. A maximum diffraction efficiency of 18% has been achieved under a low electric field intensity of 0.45 V/µm and the shortest build-up time of grating is 5.5 ms. The system can realize a video display with 60 Hz refresh rate in red, green and blue colors, which demonstrates the feasibility of applying perovskite NC doped LC film in dynamic holographic display.

No abstract

Holographic display, which can completely reconstruct phase and amplitude information, is considered as an ideal true threedimensional display technology. In this work, liquid crystal doped with perovskite (CsPbBr3) works as the photorefractive material and forms diffraction grating under the interference light beams. The dependences of diffraction efficiency and response time on doping concentration, recording beam power and applied voltage are investigated. A maximum first-order diffraction efficiency of 18% has been achieved under a low electric field intensity of ~0.5 V/ m and the shortest grating build up time is as low as 5.5 ms. The system can realize a real-time dynamic display with 60 Hz refresh rate.

A dual‐plane head‐mounted display system based on polarization‐multiplexing is proposed. A metal wire grid polarizer is employed to separate the two orthogonal polarizations to different optical paths due to its excellent polarization‐selective characteristics within large angle and spectrum ranges. System parameters including the curvatures of the reflective mirrors and the aspheric lens have been optimized to achieve good image quality within a field of view of ~ 50 degrees at different focal depths. Our system could provide correct depths for full‐color 3D images, so that the vergence‐accommodation conflict and visual fatigue problems could be solved.