تأثیر ولتاژ و زمان رسوب‌نشانی الکتریکی بر خواص الکتروکرومیکی پوشش‌های WO3

نوع مقاله : علمی و پژوهشی

نویسندگان

پریسا کاظمی زاده

مصطفی میرجلیلی

قاسم براتی دربند

گروه مهندسی مواد و متالورژی، دانشکده مهندسی، دانشگاه فردوسی مشهد، ایران.

10.22067/jmme.2024.85499.1129

چکیده

مواد الکتروکرومیک وقتی در میدان الکتریکی قرار می‌گیرند، تغییر رنگ می‌دهند و از مهم‌ترین کاربرد‌های این مواد، می‌توان به پنجره‌های هوشمند اشاره کرد. این پنجره‌ها نقش مهمی در صرفه جویی مصرف انرژی و هم‌چنین کنترل شرایط نوری و دمایی اتاق دارند. اکسید تنگستن به عنوان یک ماده الکتروکرومیک، به دلیل بازده رنگی بالا توجه زیادی از پژوهشگران را به خود جلب کرده است. در مطالعه حاضر، به تاثیر ولتاژ و زمان برخواص الکتروکرومیک جهت رسیدن به شرایط بهینه رسوب‌نشانی اکسید‌‎‌ تنگستن به روش رسوب‌نشانی الکتریکی پرداختیم. آزمایش‌هایی که بر اساس ویژگی‌های نوری، ریزساختاری و چرخه ولتامتری انجام شد، نشان داد که ولتاژ کاتدی450- میلی‌ولت ( نسبت به الکترود مرجع Ag/AgCl ) و زمان رسوب‌نشانی 3 دقیقه باعث بهبود ویژگی‌های الکتروکرومیکی لایه‌های اکسید تنگستن در الکترولیت سولفوریک اسید یک مولار شده است. میزان بازده رنگی برای این لایه cm2/C 12.16به دست آمد و پایداری مناسبی تا 100 چرخه از خود نشان داده است.

کلیدواژه‌ها

الکتروکرومیک

رسوب‌نشانی الکتریکی

اکسید تنگستن

شیشه ITO

موضوعات

• الکترو شیمی

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عنوان مقاله English

Effect of voltage and time of electrodeposition on the electrocheromic charactristics of WO3

نویسندگان English

Parisa Kazemizadeh

Mostafa Mirjalili

Ghasem Barati Darband

Ferdowsi University of Mashhad, Faculty of Engineering, Department of Metallurgical and Materials Engineering

چکیده English

Electrochromic materials change color when placed in an electric field. Among their most important applications we can mention electrochromic windows. These windows play an important role in saving energy as well as controlling the light and thermal conditions of the room. Tungsten oxide as an electrochromic material has attracted a lot of attention from researchers due to its high color efficiency. We studied the effect of voltage and time on the electrochromic properties to reach optimal conditions for tungsten oxide deposition using electrochemical deposition method. Optical and microstructural investigations and cyclic voltammetry were performed and showed that the cathodic voltage of -450 mV (versus Ag/AgCl reference electrode) and the deposition time of 3 minutes has improved the electrochromic characteristics of tungsten oxide layers in one molar sulfuric acid electrolyte. The color efficiency for this layer was 12.16 cm2/C and it has shown good stability up to 100 cycles.

keywords: electrochromic, electrodeposition, tungsten oxide, ITO glass

کلیدواژه‌ها English

electrochromic

electrodeposition

tungsten oxide

ITO glass

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