Electrochromic Performance of WO3 Films Prepared by Polymeric Precursor Method

Wenjing Chu; Chunliang Lin; Youwei Zheng; Jinxi Lin; Jinhan Lin; Jianhua Qiu

doi:10.3788/AOS201838.0216002

Journals >Acta Optica Sinica >Volume 38 >Issue 2 >Page 0216002 > Article

Acta Optica Sinica
Vol. 38, Issue 2, 0216002 (2018)

Electrochromic Performance of WO₃ Films Prepared by Polymeric Precursor Method

Wenjing Chu^1、*, Chunliang Lin¹, Youwei Zheng¹, Jinxi Lin¹, Jinhan Lin¹, and Jianhua Qiu²

Author Affiliations

¹ Provincial Photoelectric Glass Key Laboratory, Changzhou Almaden CO., Ltd., Changzhou, Jiangsu 213000, China

² Jiangsu Collaborative Innovation Center of Photovoltaic Science and Engineering, Changzhou University, Changzhou, Jiangsu 213000, China

show less

DOI: 10.3788/AOS201838.0216002 Cite this Article Set citation alerts

Wenjing Chu, Chunliang Lin, Youwei Zheng, Jinxi Lin, Jinhan Lin, Jianhua Qiu. Electrochromic Performance of WO₃ Films Prepared by Polymeric Precursor Method[J]. Acta Optica Sinica, 2018, 38(2): 0216002 Copy Citation Text

show less

Fig. 1. XRD patterns of (a) standard WO3, (b) FTO, and (c) WO3 films with different mixture ratios

Download full size

Fig. 2. Surface morphologies of WO3 films with different mixture ratios. (a) Sample 1; (b) sample 2; (c) sample 3; (d) sample 4; (e) sample 5

Download full size

Fig. 3. (a) Cyclic voltammograms and (b) double potential step current curves of WO3 films with different mixture ratios

Download full size

Fig. 4. Structural diagrams of WO3 films with different mixture ratios. (a) Low polymer content; (b) moderate polymer content; (c) high polymer content

Download full size

Fig. 5. (a) Transmittance spectrum and (b) reflectance spectrum of WO3 films under colored and bleached states

Download full size

Fig. 6. (a) Absorptance spectrum and (b) radiation spectrum of WO3 films

Download full size

Fig. 7. Current versus time in colored and bleached processes

Download full size

Sample number	Mass of AMT /g	Volume of deionized water /mL	Mass fraction of Pluronic F127 /%	Thickness of films /nm
1	4	8	16	333.7
2	4	8	20	338.6
3	4	8	26	335.1
4	4	8	29	340.7
5	4	8	31	347.5

Table 1. Compositions of polymeric precursor solution, experimental conditions and film thicknesses

Sample number	1	2	3	4	5
Grain size /nm	16.15	17.06	17.16	17.25	16.23

Table 2. Grain sizes of WO3 films with different mixture ratios obtained by calculation

State	$\begin{matrix} {T_{Solar}}_{} \end{matrix}$ /%	$\begin{matrix} {T_{Lig h t}}_{} \end{matrix}$ /%	$\begin{matrix} {T_{IR}}^{} \end{matrix}$ /%	△ $\begin{matrix} {T_{Lig h t}}^{} \end{matrix}$ /%	△D_Solar	△D_Light	△D_IR
Bleached state	49.51	72.60	31.68	62.68	0.749	0.864	2.656
Colored state	8.83	9.92		62.68	0.749	0.864	0.07

Table 3. Main optical performance parameters of WO3 films

State	$\begin{matrix} {T_{Solar}}_{} \end{matrix}$ /%	$\begin{matrix} {R_{Solar}}_{} \end{matrix}$ /%	$\begin{matrix} {A_{Solar}}_{} \end{matrix}$ /%	ε_i	$\begin{matrix} {q_{i}}_{} \end{matrix}$ /%	g /%
Bleached state	49.51	15.98	34.51	0.6270	7.99	57.50
Colored state	8.83	22.82	68.35	0.3777	13.39	22.22

Table 4. Optical performance parameters of WO3 films under temperature of 298 K

State	$\begin{matrix} {T_{Solar}}_{} \end{matrix}$ /%	$\begin{matrix} {R_{Solar}}_{} \end{matrix}$ /%	$\begin{matrix} {A_{Solar}}_{} \end{matrix}$ /%	ε_i	$\begin{matrix} {q_{i}}_{} \end{matrix}$ /%	g /%
Bleached state	49.51	15.98	34.51	0.6309	8.00	57.51
Colored state	8.83	22.82	68.35	0.3777	13.39	22.22

Table 5. Optical performance parameters of WO3 films under temperature of 323 K

Method	Method 1	Method 2	Method 3	Method 4	Method 5
△ $\begin{matrix} {T_{Lig h t}}_{} \end{matrix}$ /%	52.33	23	40	42.9	62.68
△D_Light	0.687	0.179	0.225	0.354	0.864

Table 6. Optical modulation range and optical density difference in visible region of WO3 films prepared by different methods

Download Citation

Set citation alerts for the article

Tools

Set citation alerts for the article

Save the article for my favorites

Paper Information