Electrochromic Performance Fading and Restoration in Amorphous TiO2 Thin Films

Huang，Siyuan1; Zhang，Renfu1; Shao，Peipei1; Zhang，Yiwen1; Wen，Rui Tao1,2

2022

10.1002/adom.202200903

Advanced Optical Materials   影响因子和分区

2195-1071

2195-1071

Electrochromic performance fading is inevitable upon extended cycling, and the limited lifetime greatly prevents large-scale commercialization of electrochromism-based devices. Here the origin of the performance degradation is uncovered and the performance restoration in TiO thin films is explored. It is shown that, depending on the applied potential windows, the inserted ions are immobilized in α-traps resulting in a monotonous degradation of colored state, or immobilized in b- and modified α-traps leading to mutual degradation of colored and bleached state of the films. It is found by releasing the resided ions in various traps, the initial performance can be restored accordingly. Moreover, reversible sites and all traps are demonstrated to be interconvertible through an ion trapping and detrapping process. These results provide a general scope in understanding the electrochromism in oxide thin films and offer the scheme for potential traps control or even elimination, aiming at superior electrochromic devices.

electrochromic ion trapping and detrapping TiO 2 thin films traps

SCI ; EI

英语

第一

Shenzhen municipal government[Y01256130] ; Southern University of Science and Technology[Y01256230] ; National Natural Science Foundation of China[52172294] ; Shenzhen Science and Technology Innovation Commission[JCYJ20210324105402007] ; Guangdong Provincial Innovation and Entrepreneurship Project[2017ZT07C071] ; National Natural Science Foundation of Guangdong[2022A1515010216] ; Guangdong Provincial Key Laboratory Program from the Department of Science and Technology of Guangdong Province[2021B1212040001]

Materials Science ; Optics

Materials Science, Multidisciplinary ; Optics

WOS:000802019400001

WILEY-V C H VERLAG GMBH

20222212171511

Electrochromic devices ; Ions ; Oxide films ; Restoration ; Thin films ; Titanium dioxide

Electricity: Basic Concepts and Phenomena:701.1 ; Electronic Components and Tubes:714 ; Light/Optics:741.1 ; Optical Devices and Systems:741.3 ; Inorganic Compounds:804.2

2-s2.0-85130839004

Scopus

1.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices,Southern University of Science and Technology,Shenzhen,518055,China

Huang，Siyuan,Zhang，Renfu,Shao，Peipei,et al. Electrochromic Performance Fading and Restoration in Amorphous TiO2 Thin Films[J]. Advanced Optical Materials,2022,10.

Huang，Siyuan,Zhang，Renfu,Shao，Peipei,Zhang，Yiwen,&Wen，Rui Tao.(2022).Electrochromic Performance Fading and Restoration in Amorphous TiO2 Thin Films.Advanced Optical Materials,10.

Huang，Siyuan,et al."Electrochromic Performance Fading and Restoration in Amorphous TiO2 Thin Films".Advanced Optical Materials 10(2022).