دانلود مقاله ISI انگلیسی شماره 54205
ترجمه فارسی عنوان مقاله

ملاحظات در عمق برای پلی الکترولیت بهتر به عنوان مواد بین سطحی در سلول های خورشیدی پلیمری

عنوان انگلیسی
In-depth considerations for better polyelectrolytes as interfacial materials in polymer solar cells
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
54205 2016 13 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Nano Energy, Volume 21, March 2016, Pages 26–38

ترجمه کلمات کلیدی
سلول های خورشیدی پلیمری؛ پلی الکترولیت؛ میان لایه؛ دو قطبی سطحی؛ تغلیظ
کلمات کلیدی انگلیسی
Polymer solar cells; Polyelectrolytes; Interlayers; Interfacial dipoles; Doping
پیش نمایش مقاله
پیش نمایش مقاله  ملاحظات در عمق برای پلی الکترولیت بهتر به عنوان مواد بین سطحی در سلول های خورشیدی پلیمری

چکیده انگلیسی

We perform a comprehensive study to achieve better polyelectrolytes (PEs) as electron-transport layers (ETLs) in polymer solar cells (PSCs). Three well-known PEs – PFN, PEIE, and WPF – are chosen as model systems and investigated with variations in their backbone structures and the state of the amine functionalities on their side chains. Respectively optimized PSCs using the three PEs exhibit different cell-performances, mainly owing to the diode characteristics of built-in potential and recombination strength. To identify how such deviated device-performances correlate with the structural features of PEs, the modulated interfaces of ITO/PEs and PEs/active layer are studied in detail. It is found that conjugated backbones and larger counter-anions on side chains can promote the modulation of ITO work functions (WFs) and that a large amount of protonated amines on PEs is beneficial for junction properties with a subsequent active layer. Additionally, our results indicate that interfacial dipole and electrical doping between the PE and active layer, in addition to WF modulation of the ITO cathode, are important for device efficiency. Accordingly, with the aid of the molecular features of PEIE, PEIE-PSCs exhibit excellent device efficiency and stability compared with PFN- and WPF-PSCs. In the PTB7-th:PC71BM system, a remarkable power-conversion efficiency of 9.97% is achieved with a single PEIE ETL.