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- Title
Ultrathin Anode Buffer Layer for Enhancing Performance of Polymer Solar Cells.
- Authors
Dun Wang; Jian Wang; Ling-liang Li; Qiao-shi An; Hui Huang; Chao-qun Jiao; Yang Liu; Fu-jun Zhang
- Abstract
A series of polymer solar cells (PSCs) based on poly[(4,8-bis-(2-ethylhexyloxy)-benzo[1,2-b:4,5-b′(dithiophene)-2,6-diyl-alt-(4-(2-ethylhexanoyl)-thieno[3,4-b]thiophene)-2,6-diyl] (PBDTTT-C) and [6,6]phenyl-C71-butyric acid methyl ester (PC71BM) were fabricated with various anode buffer layers. The power conversion efficiency (PCE) of PSCs was improved to 4.91% for the cells with PEDOT:PSS/LiF (1nm) as anode buffer layer, which corresponds to 26.2% efficiency improvement compared with the cells with PEDOT:PSS as anode buffer layer. The PSCs with PEDOT:PSS/LiF as anode buffer layer show a maximum short-circuit density (Jsc) of 13.70 mA/cm², with open circuit voltage (Voc) of 0.73 V and fill factor (FF) of 49.1% under illumination 100 mW/cm² AM 1.5 G simulated solar light. The dominant mechanism for the performance improvement of PSCs could be attributed to the increased charge carrier collection ability by anode buffer layers.
- Subjects
THIN films; SOLAR cells; THIOPHENES; METHYL formate; SHORT circuits; ENERGY conversion
- Publication
International Journal of Photoenergy, 2014, p1
- ISSN
1110-662X
- Publication type
Article
- DOI
10.1155/2014/846581