Multi‐Axial Broadband Photopyroelectric Response in Biaxial Perovskite Ferroelectric Crystals Driven by the Ferro‐Pyro‐Phototronic Effect DOI
Yueying Wang, Yuhang Jiang, Jianbo Wu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Abstract Broadband photopyroelectric photodetectors (PDs) based on single crystal (SC) show potential in near‐infrared detection and imaging, attributed to their high crystalline properties, lack of grain boundaries, bias‐free. Nonetheless, the distinctive characteristic is attainable only with PDs crafted via polar crystallographic axis direction. This constraint directly results reported SC‐based being uniaxial, thus elevating intricacy expense manufacturing devices. Herein, a multi‐axis SC‐driven broadband PD realized, employing ferro‐pyro‐phototronic (FPP) effect biaxial ferroelectric EA 4 Pb 3 Cl 10 ( 1 , = ethylamine). In detail, pyroelectric coefficients along c ‐ b ‐axis are ≈ 2.6 × −3 3.5 µC cm −2 K −1 respectively, comparable those conventional materials like PVDF (≈ 2.7 ). Importantly, this device surpasses its inherent optical bandgap allow for broad response from UV (UV, 266 nm) (NIR, 980 wavelengths both axes at zero bias. Such advancement signifies major progress realm multidirectional detection, complete response.

Language: Английский

Advances in Bipolar Photodetectors: Working Principles, Constructions, and Applications DOI Open Access

Wenxin Zeng,

Zaihua Duan,

Yichen Bu

et al.

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 11, 2025

Abstract As a special type of photodetectors, the bipolar photodetectors (BPDs) have attracted extensive attention because their unique positive and negative outputs, endowing them attractive applications, such as optical communication, logic gate, imaging. However, there is still insufficient understanding working mechanisms device structures BPDs, which limits optoelectronic performances practical applications. This review focuses on principles, constructions, applications BPDs. First, fundamental principles BPDs are analyzed based structures, including photoconductors, photodiodes, phototransistors, photoelectrochemical others. Second, constructions different materials (2D materials, organic semiconductors, perovskites, III–V compounds, oxides, selenides) reviewed, discussed. Third, various summarized, Finally, challenges prospects delivered for developing state‐of‐the‐art It can be expected that this will provide valuable insights guidance future research

Language: Английский

Citations

2
Multi‐Axial Broadband Photopyroelectric Response in Biaxial Perovskite Ferroelectric Crystals Driven by the Ferro‐Pyro‐Phototronic Effect DOI
Yueying Wang, Yuhang Jiang, Jianbo Wu

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 22, 2025

Abstract Broadband photopyroelectric photodetectors (PDs) based on single crystal (SC) show potential in near‐infrared detection and imaging, attributed to their high crystalline properties, lack of grain boundaries, bias‐free. Nonetheless, the distinctive characteristic is attainable only with PDs crafted via polar crystallographic axis direction. This constraint directly results reported SC‐based being uniaxial, thus elevating intricacy expense manufacturing devices. Herein, a multi‐axis SC‐driven broadband PD realized, employing ferro‐pyro‐phototronic (FPP) effect biaxial ferroelectric EA 4 Pb 3 Cl 10 ( 1 , = ethylamine). In detail, pyroelectric coefficients along c ‐ b ‐axis are ≈ 2.6 × −3 3.5 µC cm −2 K −1 respectively, comparable those conventional materials like PVDF (≈ 2.7 ). Importantly, this device surpasses its inherent optical bandgap allow for broad response from UV (UV, 266 nm) (NIR, 980 wavelengths both axes at zero bias. Such advancement signifies major progress realm multidirectional detection, complete response.

Language: Английский

Citations

0