Journal
MICROELECTRONIC ENGINEERING
Volume 235, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.mee.2020.111465
Keywords
B-CQDs; Organic solar cells; Optical properties; Crystallinity
Categories
Funding
- 2209-A program through the Scientific and Technological Research Council of Turkey [1919B011903865]
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This study introduced boron-doped carbon quantum dots (B-CQDs) as a novel additive for organic solar cells, showing improved optical absorption, film crystallinity, interchain interaction, and phase separation in the active layer. The addition of optimized vol% of B-CQDs significantly enhanced absorption, leading to efficient charge separation and transport in OSCs, resulting in an improvement of power conversion efficiency by 50%.
This study reports the synthesis of boron-doped CQDs (B-CQDs) and the using as a novel additive for organic solar cells. we introduced B-CQDs P3HT:PCBM bulk heterojunction organic solar cells (OSCs). The structural and morphological characterization results showed that the optical absorption and film crystallinity can be easily enhanced by B-CQDs additive in P3HT:PCBM solution. Additionally, with the improved crystallinity of P3HT, the effective interchain interaction and phase separation in photoactive layer were achieved. As a result,-50% improving of FF of the device with 5 vol% of B-CQDs additive was determined. Thanks to improved photovoltaic characteristics, best performing device showed a power conversion efficiency of 2.7% (with-50% improve-ment). This report shows that the addition of optimized vol% of B-CQDs into the photoactive blend strongly improves the absorption and leads to achieve efficient charge separation and transport in OSCs.
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