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Photorefractive effect of ferroelectrics refers to the light‐induced change of refractive index, which is an optical controlling avenue in holographic storage and image processing. For most ferroelectrics, however, the small photorefractive effect (10−5–10−4) hinders their practical application and it is urgent to exploit new photorefractive system. Here, for the first time, strong photorefractive...
2D Dion–Jacobson (DJ) phase hybrid perovskites have shown great promise in the photoelectronic field owing to their outstanding optoelectronic performance and superior structural rigidity. However, DJ phase lead‐free double perovskites are still a virgin land with direct X‐ray detection. Herein, we have designed and synthesized a new DJ phase lead‐free layered double perovskite of (HIS)2AgSbBr8 (1...
2D Fe‐chalcogenides have drawn significant attention due to their unique structural phases and distinct properties in exploring magnetism and superconductivity. However, it remains a significant challenge to synthesize 2D Fe‐chalcogenides with specific phases in a controllable manner since Fe‐chalcogenides have multiple phases. Herein, a molecular sieve‐assisted strategy is reported for synthesizing...
The bulk anomalous photovoltaic (BAPV) effect of acentric materials refers to a distinct concept from traditional semiconductor‐based devices, of which the above‐bandgap photovoltage hints at a promise for solar‐energy conversion. However, it is still a challenge to exploit new BAPV‐active systems due to the lacking of knowledge on the structural origin of this concept. BAPV effects in single crystals...
Ferro‐pyro‐phototronic (FPP) effect is a triple coupling of ferroelectricity, light‐induced pyroelectricity, and photo‐excitation, which holds a bright promise for next‐generation modern optoelectronic devices. However, except for few oxides (e.g., BaTiO3), new FPP‐active candidates remain extremely scarce due to the knowledge lacking on the underlying role of three coupling components. By tailoring...
2D materials with inherent attributes of structural anisotropy have been well applied in the field of polarization‐sensitive photodetection. However, to explore new 2D members with strong polarized‐light responses still remains a challenge. Herein, by alloying diamine molecule into the 3D prototype of CsPbBr3, a new Dion–Jacobson (DJ) type 2D perovskite of (HDA)CsPb2Br7 (1, where HDA2+ is 1,6‐hexamethylenediammonium),...
2D hybrid perovskites have shown great promise in the photodetection field, due to their intriguing attributes stemming from unique structural architectures. However, the great majority of detectors based on this 2D system possess a relatively low response speed (≈ms), making it extremely urgent to develop new candidates for superfast photodetection. Here, a new organic–inorganic hybrid perovskite,...
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