نویسندگان

1 موسسه پژوهشی علوم و فناوری رنگ و پوشش، گروه پژوهشی مواد رنگزای آلی، تهران، ایران.

2 موسسه پژوهشی علوم و فناوری رنگ و پوشش، قطب علمی رنگ، تهران، ایران.

چکیده

دو ماده رنگزای آلی بر پایه ایندولین به عنوان ماده حساس به نور حاوی فنوتیازین به عنوان گروه الکترون دهنده و آکریلیک اسید (ماده رنگزای 1) و سیانوآکریلیک اسید (ماده رنگزای 2) به عنوان گروه الکترون گیرنده تهیه شد. خواص اسپکتروسکوپی مواد رنگزای سنتز شده در محلول و در حالت جذب شده بر روی اکسید روی مورد مطالعه قرار گرفت. طول موج ماکزیمم جذب ماده رنگزای آلی در محلول 412 و 424 نانومتر و بر روی لایه اکسید روی 429 و 438 نانومتر است. حداکثر زمان جذب مواد رنگزا بدون تجمع و رسوب بر روی فوتوالکترود اکسید روی در حدود 10 ساعت است. اثر حضور یون لیتیم و نسبت ترکیب مخلوط ید/تری‌یدید به عنوان الکترولیت بر عملکرد سلول خورشیدی بررسی شد. افزایش غلظت یون‌های لیتیوم در الکترولیت سبب کاهش باند هدایت اکسید روی شده که تاثیر مستقیمی در پدیده بازترکیب دارد. بالاترین راندمان تبدیل برای ماده رنگزای 2 در حضور یون لیتیم با غلظت یک میلی‌مول و در حدود 5/17% به دست آمد.

کلیدواژه‌ها

عنوان مقاله [English]

Investigation of Effect Electrolyte on Performance of Dye-Sensitized Solar Cells Based on Indoline Dyes

نویسندگان [English]

  • M. Hosseinnezhad 1 2
  • K. Gharanjig 1 2

1 Institute for Color Science and Technology, Department of Organic Colorants, Tehran, Iran. |Institute for Color Science and Technology, Center of Excellence of Color Science and Technology, Tehran, Iran.

2 Institute for Color Science and Technology, Department of Organic Colorants, Tehran, Iran. |Institute for Color Science and Technology, Center of Excellence of Color Science and Technology, Tehran, Iran.

چکیده [English]

Two organic dyes based on indoline were prepared as photosensitizer contain phenothiazine as the electron donor group and acrylic acid (Dye 1) and cyanoacrylic acid (Dye 2) as the electron acceptor anchoring. Spectrophotometric measurements of the synthesized dyes in solution and on a ZnO substrate were carried out in order to assess changes in the status of the dyes. The wavelength of maximum absorption of dye 1 and dye 2 in solution are 412 nm and 424 nm and on ZnO films are 429 nm and 438 nm, respectively. Maximum dye adsorption time around 10h could be utilized with minimum aggregation or precipitation of the dye on photoelectrode substrate. The effect of Li ions and composition of the iodide/triiodide based electrolyte on the performance of DSSCs were investigated. A high concentration of Li ions in electrolyte was found to be shift the ZnO conduction band edge to more negative potentials that have a direct effect on recombination phenomena. The Maximum conversion efficiency was achieved for dye 2 in the presence of 1mM Li ions around 5.17%.

کلیدواژه‌ها [English]

  • Indoline
  • Dye-sensitized solar cell
  • ZnO
  • Electrolyte
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