کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1284172 1497972 2014 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Thickness-self-controlled synthesis of porous transparent polyaniline-reduced graphene oxide composites towards advanced bifacial dye-sensitized solar cells
ترجمه فارسی عنوان
سنتز ضخامت-خود کنترل شده کامپوزیت های گرافن اکسید گرافین با ضخامت پلی¬انیلین متخلخل به سمت سلول های خورشیدی حساس شده به دو رنگی
کلمات کلیدی
پلی آنیلین، گرافن، سلول دوفازی، سلول خورشیدی حساس شده به رنگ، فیلم شفاف
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی


• A two-step approach is demonstrated to fabricate a porous, ultrathin PANI-RGO electrode.
• The thickness can be self-controlled by pH adjustment.
• The well-designed PANI-RGO electrodes exhibit excellent photovoltatic performances.
• The incorporation of RGO raises the transparency of PANI and photo harvest.
• A universal approach is well-designed to fabricate PANI-RGO-based conductive thin films.

A powerful synthesis strategy is proposed for fabricating porous polyaniline-reduced graphene oxide (PANI-RGO) composites with transparency up to 80% and thickness from 300 to 1000 nm for the counter electrode (CE) of bifacial dye-sensitizing solar cells (DSSCs). The first step is to combine the in-situ positive charge transformation of graphene oxide (GO) through aniline (ANI) prepolymerization and the electrostatic adsorption of ANI oligomer-GO to effectively control the thickness of ultrathin PANI-GO films by adjusting pH of the polymerization media. In the second step, PANI-GO films are reduced with hydroiodic acid to simultaneously enhance the apparent redox activity for the I3−/I− couple and their electronic conductivity. Incorporating the RGO increases the transparency of PANI and facilitates the light-harvesting from the rear side. A DSSC assembled with such a transparent PANI-RGO CE exhibits an excellent efficiency of 7.84%, comparable to 8.19% for a semi-transparent Pt-based DSSC. The high light-harvesting ability of PANI-RGO enhances the efficiency retention between rear- and front-illumination modes to 76.7%, compared with 69.1% for a PANI-based DSSC. The higher retention reduces the power-to-weight ratio and the total cost of bifacial DSSCs, which is also promising in other applications, such as windows, power generators, and panel screens.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Power Sources - Volume 260, 15 August 2014, Pages 326–337
نویسندگان
, , , , , , , ,