All-plastic electrochromic devices based on PEDOT as switchable optical attenuator in the near IR

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• 作者：Cristina Pozo-Gonzalo ; David Mecerreyes ; José ; A. Pomposo ; Maitane Salsamendi ; Rebeca Marcilla ; Hans Gr ; e ; Ricardo Vergaz ; David Barrios ; José ; M. Sá ; nchez-Pena
• 关键词：Conducting polymers ; Electrochromic devices ; PEDOT ; Optical attenuator
• 刊名：Solar Energy Materials and Solar Cells
• 出版年：2008
• 出版时间：February 2008
• 年：2008
• 卷：92
• 期：2
• 页码：101-106
• 全文大小：353 K

文摘

Advanced materials for IR applications such as thermal control in spacecraft applications or variable optical attenuators which could replace the present systems have been sought. The use of electrochromic devices based on conducting polymers will add lightness and flexibility to the final device in order to overcome the limitations of the present materials used in IR applications. In this work, we present a new all-plastic electrochromic device with optical contrast ( % ΔT) of 44 % at 1971 nm in the IR region based on PEDOT formulations and ionic liquid blends as electrolytes. The switching time of the device is in the order of a few seconds, with a t_c 2.7 s and t_b 3.8 s.