Ultra‐Long 1D Double Perovskite CsAg0.4Cu1.6I3 Single Crystal for UV Imaging Memory DOI
Fa Cao, Ying Liu, Enliu Hong

et al.

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

Published: April 29, 2025

Abstract Emerging copper‐based lead‐free perovskites have garnered significant attention for ultraviolet (UV) photodetection due to their atmospheric stability and optoelectronic properties. However, practical applications are hindered by low carrier density limited device performance. In this work, a breakthrough is reported in synthesizing ultra‐long 1D double perovskite CsAg x Cu 2‐x I 3 (0≤x≤2) single crystals (SCs) via an anti‐solvent recrystallization method. The SCs achieve unprecedented lengths of 2.2 cm 0.4 1.6 2 (CAI123), setting new benchmarks Cu/Ag‐based perovskites. By tuning the Ag‐doping ratio, bandgap continuously modulated from 3.60 3.24 eV, enabling tailored responses. optimized ‐based photodetector exhibits exceptional performance at 360 nm, with peak responsivity 82.5 mA W −1 high detectivity 1.3 × 10 12 Jones (@ 3V; light intensity: 2.8 mW −2 ), superior than CsCu (20.7 ) CAI123 (15.8 ). Notably, detector array demonstrates pioneering UV imaging memory capabilities, retaining patterns over s slow release self‐trapped defect‐related states. This work not only advances synthesis eco‐friendly but also unlocks novel functionalities next‐generation optoelectronics sensing, imaging, devices.

Language: Английский

Ultra‐Long 1D Double Perovskite CsAg0.4Cu1.6I3 Single Crystal for UV Imaging Memory DOI
Fa Cao, Ying Liu, Enliu Hong

et al.

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

Published: April 29, 2025

Abstract Emerging copper‐based lead‐free perovskites have garnered significant attention for ultraviolet (UV) photodetection due to their atmospheric stability and optoelectronic properties. However, practical applications are hindered by low carrier density limited device performance. In this work, a breakthrough is reported in synthesizing ultra‐long 1D double perovskite CsAg x Cu 2‐x I 3 (0≤x≤2) single crystals (SCs) via an anti‐solvent recrystallization method. The SCs achieve unprecedented lengths of 2.2 cm 0.4 1.6 2 (CAI123), setting new benchmarks Cu/Ag‐based perovskites. By tuning the Ag‐doping ratio, bandgap continuously modulated from 3.60 3.24 eV, enabling tailored responses. optimized ‐based photodetector exhibits exceptional performance at 360 nm, with peak responsivity 82.5 mA W −1 high detectivity 1.3 × 10 12 Jones (@ 3V; light intensity: 2.8 mW −2 ), superior than CsCu (20.7 ) CAI123 (15.8 ). Notably, detector array demonstrates pioneering UV imaging memory capabilities, retaining patterns over s slow release self‐trapped defect‐related states. This work not only advances synthesis eco‐friendly but also unlocks novel functionalities next‐generation optoelectronics sensing, imaging, devices.

Language: Английский

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