A Characteristic Study and Improvement of Electrochromic Smart Window

• Main Authors: Shu-Yen Chan, 詹書儼
• Other Authors: Wha-Tzong Whang
• Format: Others
• Language: zh-TW
• Published: 1994
• Online Access: http://ndltd.ncl.edu.tw/handle/80423260125977801795

碩士 === 國立交通大學 === 材料科學(工程)研究所 === 82 === The objective of this study is to improve the and reliability of a conducting polymer ( polyaniline ) and a polymer electrolyte for a smart woindow producing optical .The smart woindow is composed of three thin layers between pieces of ITO glass : The conducting polyaniline , electrolytes,and transparent copper thin film.The ITO glass working electrode is covered with electropolymerized , an electrochromic polymer.The ITO glass as a counter is electrodeposited with a transparent thin copper film ). The polymer electrolyte including Lithium salt is sandwiched between both ITO glasses. The electrochromic device at three main color states -erent optical wavelength absorption . The clear state shows absorption at 336-342nm and a relative low absorption in the region . The green state shows absorptions at 342-348nm and 410-430nm , and relatively higher absorption in th IR region The blue/purple state shows absorptions at 320-350nm and at 762nm,and even higher absorption in the IR region but rapidly above 762nm.The polymer electrolyte with different Li salts also shows its effect on the optical absorption . For /green state transition , LiClO4is a better candidate than as a salt in the polymer electrolyte. For green/blue-purple transition the LiBF4 is a better salt .The electrochromic gradually show some permanent dark area after using several . We think the dark area can be stillexcluded.