Cycling and at-rest stabilities of a complementary electrochromic device containing poly(3,4-ethylenedioxythiophene) and Prussian blue

详细信息	查看全文 | 推荐本文 |

• 作者：Tsai-Shih Tung and Kuo-Chuan Ho
• 关键词：At-rest stability ; Coloration efficiency ; Cycling stability ; Electrochromic device ; Poly(3 ; 4-ethylenedioxythiophene) ; Prussian blue
• 刊名：Solar Energy Materials and Solar Cells
• 出版年：2006
• 期刊代码：81_09270248
• 类别：ce
• 出版时间：6 March 2006
• 卷：90
• 期：4
• 页码：521-537
• 文件大小：421 K

摘要

PEDOT-based electrochromic devices (ECDs) have been investigated intensively in recent years. In order to obtain an ECD having long cycle life, the counter electrode and electrolyte used should be compatible in the electrochemical environment. Prussian blue (PB) is proven to be electrochemically stable when cycling in non-aqueous solutions. Thus a new organic-inorganic complementary ECD was assembled in combination with a PMMA-based gel polymer electrolyte. This ECD exhibited deep blue-violet when applying −2.1 V and became light blue when applying 0.6 V. Under these conditions, the transmittance of the ECD at 590 nm changed from 13.8%(−2.1 V) to 60.5%(+0.6 V) with a coloration efficiency of 338 cm²/C. The cell retained 55%of its maximum transmittance window (ΔT_max) after 50,640 repeated cycles. Moreover, the at-rest stability test revealed a transmittance window (ΔT) decay of 9.6%over a period of 107 days. Therefore, the proposed PEDOT-PB ECD may have potential for practical applications.