| 초록 |
Carbon quantum dots (CQDs) have been extensively investigated especially due to their strong and tunable fluorescence emission properties, which enable utilized in various fields. Even though CQDs have been applied in many fields, research on polymer solar cells (PSCs) is still relatively inactive. CQDs have low toxicity, and simple fabrication processes and environmentally friendly with well soluble in water or alcohol which suitable for solution processes, so they are expected to be easily applied to PSCs and increase efficiency through effective surface modification. In this study, we introducing the CQDs on both the single-junction solar cells (using polyethyleneimine (PEI) as an ITO work function-modifying layer) and the tandem solar cells (based on a tunnel-junction intermediate connection layer) by doping to PEI. The inclusion of CQDs in the PEI layer led to improved electron extraction properties in single-junction solar cells and better series connection in tandem solar cells. |
