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Poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)-based organic, ultrathin, and transparent sound-emitting device

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10 Author(s)
Tian, He ; Institute of Microelectronics, Tsinghua University, Beijing 100084, China and Tsinghua National Laboratory for Information Science and Technology (TNList), Tsinghua University, Beijing 100084, China ; Xie, Dan ; Yang, Yi ; Ren, Tian-ling
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An organic, ultrathin, and transparent sound-emitting device was fabricated using poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic) (PEDOT:PSS) films. This sound-emitting device was easily processed by spin coating. Sound emission from PEDOT:PSS was measured as a function of power, distance, and frequency. The sound frequency spectrum was found to be ultra-flat in a wide sound frequency range (10–45 kHz). Theoretical analysis showed that the working principle was the thermoacoustic effect. The PEDOT:PSS sound-emitting device has potential applications in the acoustic field. In particular, it can be integrated with a liquid crystal display to realize sound emission and image display at the same time.

Published in:

Applied Physics Letters  (Volume:99 ,  Issue: 23 )