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Article Abstract
We designed and fabricated a highly deformable and high-performance optical paper-based perovskite (CHNHPbBr) terahertz modulator. Broadband modulation of the terahertz transmission and reflection in the device reached 30% and 50%, respectively, which represents superior modulation performance to that of quartz-based polycrystalline film and quartz-based CHNHPbBr polycrystalline samples. Bending measurements revealed the paper-based device's strong bending stability. A decrease in the reflection and transmission of the sample under light excitation resulted in the strong absorption of terahertz waves. This provides an approach to dynamically control terahertz waves, for example, in absorbing, shielding, and stealth devices. This approach offers both flexibility and biodegradability, which is advantageous for creating sustainable and eco-friendly THz devices.
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