Triple (FAMACs) cation perovskite single crystal for enhanced photosensitive properties of photodetectors

IF 4.4 2区物理与天体物理 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Results in Physics Pub Date : 2025-05-22 DOI:10.1016/j.rinp.2025.108307

Ramashanker Gupta , Ram Datt , Swapnil Barthwal , Abhishek Kumar Chauhan , Ritu Srivastava , Sandeep Pathak , Vinay Gupta

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引用次数: 0

Abstract

Perovskite single crystals (PSCs) are intriguing choices for various optoelectronic device applications, such as photo-detectors, solar cells, and LEDs. Triple-cation mixed-halide perovskites exhibit better (phase, thermal, and environmental) stability, then the traditional perovskites based on single cation, and single halide anion. In this work, novel triple-cation mixed-halide PSCs, i.e., FA_0.85MA_0.10Cs_0.05Pb(I_0.95Br_0.05)₃ was synthesized via ACN antisolvent additive-based inverse temperature crystallization (ITC) and its wavelength-dependent photoresponse was investigated. The PSCs exhibited a bandgap energy of 1.45 eV, with a strong photoluminescence emission peak. The crystallinity and morphology of the PSCs were investigated using an X-ray diffractometer (XRD), and scanning electron microscopy (SEM). The PSCs photodetector demonstrated remarkable responsivity of

11.77

and

7.62 \times 10^{11}

detectivity at 532 nm wavelength. Photocurrent measurements were performed using lasers with 532 nm and 376 nm wavelengths. Under bias voltage applied, the 532 nm laser generated a maximum current of 113 µA, demonstrating superior performance compared to reported photodetectors based on PCSs and perovskite thin films. Collectively, this work opens up a new avenue for enhanced photosensitive photodetectors based on PSCs.

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三（FAMACs）阳离子钙钛矿单晶用于增强光电探测器的光敏性能

钙钛矿单晶（PSCs）是各种光电器件应用的有趣选择，如光电探测器，太阳能电池和led。三阳离子混合卤化物钙钛矿比传统的单阳离子、单卤化物阴离子钙钛矿具有更好的相稳定性、热稳定性和环境稳定性。本文采用ACN抗溶剂添加剂为基础的逆温度结晶（ITC）技术合成了新型三阳离子混合卤化物PSCs FA0.85MA0.10Cs0.05Pb(I0.95Br0.05)3，并研究了其波长依赖性光响应。PSCs的带隙能量为1.45 eV，具有较强的光致发光峰。利用x射线衍射仪（XRD）和扫描电子显微镜（SEM）研究了PSCs的结晶度和形貌。在532 nm波长处，PSCs光电探测器的响应率为11.77，检出率为7.62×1011。使用波长分别为532 nm和376 nm的激光器进行光电流测量。在施加偏置电压的情况下，532 nm激光器产生的最大电流为113µa，与基于PCSs和钙钛矿薄膜的光电探测器相比，显示出优越的性能。总的来说，这项工作为基于psc的增强型光敏光电探测器开辟了一条新的途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Results in Physics MATERIALS SCIENCE, MULTIDISCIPLINARYPHYSIC-PHYSICS, MULTIDISCIPLINARY

CiteScore

8.70

自引率

9.40%

发文量

754

审稿时长

50 days

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