Silk protein is considered as an attractive transient biomaterial with fantastic properties applied to biophotoelectric devices. Combined with noble-metal silver nanoparticles, a transient composite structure of $\mathrm{Ag}$ nanoparticle-embedded silk protein ($\mathrm{Ag}$/silk protein/$\mathrm{Si}$) is constructed. We obtain a lateral photovoltaic effect with a maximum sensitivity of 308.3 mV/mm, which is a very large sensitivity value in the field of organic materials, even comparable to the reported sensitivities of most inorganic materials. We attribute this to the increase of photogenerated carriers at the illuminated spot caused by the local surface-plasmon resonance of silver particles and the effective regulation of the diffusion (or resistivity of the structure) of photogenerated carriers by a silk wrapper. Interestingly, both silk protein and silver have good biocompatibility, and the combination of the two might be an alternative for the future development of biomaterial-related transient photovoltaic devices.

中文翻译：

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物理瞬态位置敏感探测器的基于蛋白质的纳米复合结构中的横向光伏效应。

蚕丝蛋白被认为是一种具有吸引力的瞬态生物材料，在生物光电器件中具有出色的性能。与贵金属银纳米粒子结合，形成一种瞬态复合结构$银$ 纳米粒子包埋的丝蛋白（$银$/丝蛋白/$硅$）被构造。我们获得的横向光伏效应具有308.3 mV / mm的最大灵敏度，这在有机材料领域是非常大的灵敏度值，甚至可以与大多数无机材料的报道灵敏度相媲美。我们将其归因于由银颗粒的局部表面等离子体激元共振引起的，在照亮点处光生载流子的增加以及丝绸包裹物对光生载流子的扩散（或结构的电阻率）的有效调节。有趣的是，丝蛋白和银都具有良好的生物相容性，两者的结合可能是生物材料相关瞬态光伏器件未来发展的替代选择。