Spirulina-Based Self-Powered Biological UV Photodetectors

IF 4.3 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2025-04-01 DOI:10.1021/acsaelm.4c0229510.1021/acsaelm.4c02295

Anamika Chatterjee, Akshai Shyam, Thirugnasambandam G Manivasagam* and Sudip K. Batabyal*,

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引用次数: 0

Abstract

Overexposure to ultraviolet (UV) radiation can be monitored by a portable UV photodetector that provides reminders to humans. However, the traditional UV photodetector falls short of practical demands due to the power supply problem, impeding further development. This study describes an exceptionally sensitive self-powered biological ultraviolet photodetector leveraging a photosynthetic organism sandwiched between two electrodes. By the introduction of a cyanobacteria Spirulina sp. as a photoactive material, the device achieves exceptional sensitivity and stability in UV light detection under self-powered operation. Notably, upon illumination with 372 nm at zero bias, the device demonstrates impressive responsivity and detectivity values of 65 mA/W and 9 × 10¹⁰ Jones for the intensity of 0.4 mW/cm², respectively. Additionally, the optimized device showed rapid rise and decay times, clocking in approximately 0.078 and 0.20 s, respectively, even at low intensity. There are many inorganic self-powered UV photodetectors widely used, but biological materials are underexplored. Now, here, we fabricated the device with nontoxic, renewable live cyanobacterial cells to mitigate environmental harm. In summary, the self-powered Spirulina-based UV photodetector demonstrates exceptional sensitivity, stability, and quick response and recovery times, making it a promising and environmentally friendly solution to the current challenges in UV detection applications.

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基于螺旋藻的自供电生物紫外线光电探测器

过度暴露于紫外线（UV）辐射可通过便携式紫外线光电探测器进行监测，并向人类发出提醒。然而，传统的紫外线光电探测器由于供电问题无法满足实际需求，阻碍了进一步的发展。本研究介绍了一种异常灵敏的自供电生物紫外线光电探测器，它利用了夹在两个电极之间的光合生物。通过引入蓝藻螺旋藻作为光活性材料，该装置在自供电运行条件下实现了优异的紫外光检测灵敏度和稳定性。值得注意的是，在零偏压条件下，当紫外线波长为 372 纳米时，该器件的响应度和检测度分别达到了 65 mA/W 和 9 × 1010 Jones（强度为 0.4 mW/cm2）。此外，即使在低强度下，优化后的器件也能显示出快速的上升和衰减时间，分别约为 0.078 秒和 0.20 秒。目前有许多无机自供电紫外光检测器被广泛使用，但生物材料的应用还很欠缺。现在，我们利用无毒、可再生的蓝藻活细胞制造了这种装置，以减轻对环境的危害。总之，基于螺旋藻的自供电紫外光检测器表现出卓越的灵敏度、稳定性、快速响应和恢复时间，使其成为应对当前紫外检测应用挑战的一种前景广阔的环保型解决方案。

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

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico