Efficient electrochromic performance of nanoparticulate WO3 thin films

被引：124

作者：

Dalavi, Dhanaji S. ^{[1
]}

Devan, Rupesh S. ^{[2
]}

Patil, Ranjit A. ^{[2
]}

Patil, Raghunath S. ^{[3
]}

Ma, Yuan-Ron ^{[2
]}

Sadale, Shivaji B. ^{[4
]}

Kim, InYoung ^{[5
]}

Kim, Jin-Hyeok ^{[5
]}

Patil, Pramod S. ^{[1
,5
]}

机构：

[1] Shivaji Univ, Dept Phys, Thin Film Mat Lab, Kolhapur 416004, Maharashtra, India

[2] Natl Dong Hwa Univ, Dept Phys, Hualien, Taiwan

[3] New Coll, Dept Phys, Kolhapur 416012, Maharashtra, India

[4] Shivaji Univ, Dept Technol, Kolhapur 416004, Maharashtra, India

[5] Chonnam Natl Univ, Dept Mat Sci, Kwangju 500757, South Korea

来源：

JOURNAL OF MATERIALS CHEMISTRY C | 2013年 / 1卷 / 23期

关键词：

TUNGSTEN-OXIDE FILMS; SOL-GEL; MORPHOLOGY; NANOSTRUCTURES; COATINGS; BEHAVIOR; PHASE;

D O I：

10.1039/c3tc30378k

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This report highlights the suitability of electrodeposited nanoparticulate-WO3 (NP-WO3) electrodes for transmissive electrochromic devices (ECDs). The WO3 electrodes in the form of thin films are composed of 10-20 nm nanoparticles. An electrochromic (EC) device of dimensions 5 x 4 cm(2) fabricated using NP-WO3 showed an Li insertion coefficient (x) of 0.43, which resulted in highest photopic transmittance modulation (88.51%), better Li-ion diffusion coefficient (similar to 3.16 x 10(-9) cm(2) s(-1)), fast electrochromic response time (5.2 s for coloration and 3.7 for bleaching) and excellent coloration efficiency (similar to 137 cm(2) C-1). On reduction of WO3, the CIELAB 1931 2 degrees color space coordinates show the transition from colorless to the deep blue state (Y = 97, a* = 1.93, b* = 0.46 and Y = 10, a* = 1.57, b* = 41.01) with steady decrease in relative luminance.

引用

页码：3722 / 3728

页数：7

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