Abstract 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% improvement). 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.

中文翻译：

---

掺硼 CQD 的合成及其在 P3HT:PCBM 层中作为添加剂用于提高有机太阳能电池的效率

摘要 本研究报告了掺硼 CQDs (B-CQDs) 的合成及其作为有机太阳能电池的新型添加剂的使用。我们介绍了 B-CQDs P3HT:PCBM 本体异质结有机太阳能电池 (OSCs)。结构和形态表征结果表明，在 P3HT:PCBM 溶液中，B-CQDs 添加剂可以很容易地增强光吸收和薄膜结晶度。此外，随着 P3HT 结晶度的提高，在光敏层中实现了有效的链间相互作用和相分离。结果，确定了具有 5 vol% B-CQDs 添加剂的装置的 FF 提高了约 50%。由于改进了光伏特性，性能最佳的设备显示出 2.7% 的功率转换效率（提高了约 50%）。