The simple structure of flexible piezoelectric polymers implies promise innumerous applications, such as transparent loudspeakers. In this study, we fabricated and characterized a prototype loudspeaker device. The loudspeaker was fabricated using a straightforward method of sandwiching a film of copolymer blend between a pair of flexible ITO substrates, which served as top and bottom electrodes. The dependence of acoustic properties of the devices was investigated in accordance with d₃₃ and piezoresponse force microscopy (PFM). In this study, we examine the sound pressure level (SPL) and sound intensity (SI) of devices featuring 0.5 ≤ α ≤ 0.9 blends, with an active area of 6.5 cm × 5 cm at 100 Vpp applied voltage. Here we report SPL of 96 dB and SI of 3.98 m Wm⁻² for an α = 0.7 blend at 100 Vpp. Our results are helpful in developing flexible, transparent piezoelectric polymers and in the development of lightweight, transparent loudspeaker devices.

柔性压电聚合物的简单结构意味着其应用前景广阔，例如透明扬声器。在这项研究中，我们制造了一个原型扬声器设备并对其进行了表征。扬声器是使用一种简单的方法制造的，将共聚物混合物薄膜夹在一对柔性 ITO 基板之间，用作顶部和底部电极。根据d ₃₃和压电响应力显微镜 (PFM)研究了器件的声学特性的依赖性。在这项研究中，我们检查了具有 0.5 ≤ α  ≤ 0.9 混合物的器件的声压级 (SPL) 和声强 (SI)， 在 100 Vpp 施加电压下，有效面积为 6.5 cm × 5 cm。这里我们报告了 96 dB 的 SPL 和 3.98 m Wm 的 SI^-2对于α  = 0.7 混合在 100 Vpp。我们的结果有助于开发灵活、透明的压电聚合物以及开发轻量级、透明的扬声器设备。