Flexible and transparent piezoelectric loudspeaker  

作　　者：M.Shehzad S.Wang Y.Wang 

机构地区：[1]School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing,Jiangsu,China [2]School of Chemical and Materials Engineering,National University of Sciences and Technology(NUST)H-12,Islamabad,Pakistan

出　　处：《npj Flexible Electronics》2021年第1期198-203,共6页npj-柔性电子（英文）

基　　金：supported by the National Natural Science Foundation of China(52072178,51790492,11874032,and 51911530120);the Fundamental Research Funds for the Central Universities(30920041119).

摘　　要：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 d_(33)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 3.98mWm^(−2)for anα=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.

关 键 词：TRANSPARENT PIEZOELECTRIC STRAIGHT 

分 类 号：O63[理学—高分子化学]