The technology of surface plasmon resonance (SPR) is widely recognized and valued for its ability to rapidly and sensitively investigate biomolecular interactivities in real-time. Herein, we numerically investigate the collective influence of metal/ transition metal dichalcogenide (TMDC)/halide perovskite (HP)/2D carbon (C) and phosphorus (P) allotropes on the functionality of an SPR biosensor deploying Kretschmann configuration. The incident light wavelength is held constant at 633 nm, and radiative properties of the hybrid structure are determined using the attenuated total reflection and transfer matrix techniques. Crucial performance metrics such as quality factor (QF), figure of merit (FoM), sensitivity, and detection accuracy are calculated. The comparison is conducted and evaluated against the current literature using performance outcomes in terms of several prisms such as BK7, BAK1, BAF10, SF5, SF10, SF11, 2S2G, CaF, and CsF, several TMDCs such as WS, MoS, WSe, MoSe, and PtSe, several HPs such as CsPbI, KSnI, CsSnI, and FASnI, and 2D C/P allotropes such as Graphene, MXene, Black phosphorene (BP), and Blue phosphorene (BlueP) in order to search optimum parameters, and then we implement the best one in each layer of this biosensor design. It is noticed that the SPR heterostructure based on BAK1 prism, plasmonic metal Ag, tungsten disulfide (WS) TMDC, formamidinium tin iodide (FASnI) HP and 2D BP exhibits outstanding performance with regard to sensor performance characteristics. The observed FoM and sensitivity are 48.2/RIU and 402°/RIU, respectively. The investigation of the electric field distribution within this biosensor along the normal to the interface is also conducted using the finite difference time domain (FDTD) approach to demonstrate the unique contribution of FASnI. The findings presented in this study are anticipated to play a key role in the improvement of plasmonic resonance-based biosensing domains like DNA hybridization or formalin detection by employing halide perovskite as an additional layer in SPR biosensors.

中文翻译：

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卤化物钙钛矿材料对棱镜负载混合表面等离子体共振生物传感器光学性能影响的数值研究：提高灵敏度的策略

表面等离子共振（SPR）技术因其能够快速、灵敏地实时研究生物分子相互作用而受到广泛认可和重视。在此，我们数值研究了金属/过渡金属二硫属化物 (TMDC)/卤化物钙钛矿 (HP)/2D 碳 (C) 和磷 (P) 同素异形体对采用 Kretschmann 配置的 SPR 生物传感器功能的集体影响。入射光波长保持恒定在 633 nm，并使用衰减全反射和传输矩阵技术确定混合结构的辐射特性。计算质量因数 (QF)、品质因数 (FoM)、灵敏度和检测精度等关键性能指标。使用多种棱镜（如 BK7、BAK1、BAF10、SF5、SF10、SF11、2S2G、CaF 和 CsF）以及多种 TMDC（如 WS、MoS、WSe、MoSe）的性能结果，根据当前文献进行比较和评估和 PtSe，几种 HP（例如 CsPbI、KSnI、CsSnI 和 FASnI）以及 2D C/P 同素异形体（例如石墨烯、MXene、黑磷烯 (BP) 和蓝磷烯 (BlueP)），以搜索最佳参数，然后我们在该生物传感器设计的每一层都实现了最好的一层。值得注意的是，基于BAK1棱镜、等离子体金属Ag、二硫化钨（WS）TMDC、碘化甲脒锡（FASnI）HP和2D BP的SPR异质结构在传感器性能特性方面表现出出色的性能。观察到的 FoM 和灵敏度分别为 48.2/RIU 和 402°/RIU。还使用有限差分时域 (FDTD) 方法对该生物传感器内沿界面法向的电场分布进行了研究，以证明 FASnI 的独特贡献。通过使用卤化物钙钛矿作为 SPR 生物传感器的附加层，预计本研究中提出的结果将在改进基于等离子体共振的生物传感领域（例如 DNA 杂交或福尔马林检测）中发挥关键作用。