稳定的聚（3-己基噻吩）：具有1 V高开路电压和4%效率的非晶态非富勒烯太阳能电池
Stable P3HT: amorphous non-fullerene solar cells with a high open-circuit voltage of 1 V and efficiency of 4.
作者信息
Lee HyunKyung, Oh Sora, Song Chang Eun, Lee Hang Ken, Lee Sang Kyu, Shin Won Suk, So Won-Wook, Moon Sang-Jin, Lee Jong-Cheol
机构信息
Advanced Materials Division, Korea Research Institute of Chemical Technology (KRICT) 141 Gajeong-ro, Yuseong Daejeon 34114 Republic of Korea
Advanced Materials and Chemical Engineering, University of Science and Technology (UST) 217 Gajeongro, Yuseong Daejeon 34113 Republic of Korea.
出版信息
RSC Adv. 2019 Jul 3;9(36):20733-20741. doi: 10.1039/c9ra03188j. eCollection 2019 Jul 1.
A non-fullerene small molecule acceptor, SF-HR composed of 3D-shaped spirobifluorene and hexyl rhodanine, was synthesized for use in bulk heterojunction organic solar cells (OSCs). It possesses harmonious molecular aggregation between the donor and acceptor, due to the interesting diagonal molecular shape of SF-HR. Furthermore, the energy level of SF-HR matches well with that of the donor polymer, poly(3-hexyl thiophene) (P3HT) in this system which can affect efficient charge transfer and transport properties. As a result, OSCs made from a P3HT:SF-HR photoactive layer exhibited a power conversion efficiency rate of 4.01% with a high of 1.00 V, a value of 8.23 mA cm, and a FF value of 49%. Moreover, the P3HT:SF-HR film showed superior thermal and photo-stability to P3HT:PCBM. These results indicate that SF-HR is specialized as a non-fullerene acceptor for use in high-performance OSCs.
合成了一种由三维形状的螺二芴和己基罗丹宁组成的非富勒烯小分子受体SF-HR，用于本体异质结有机太阳能电池（OSC）。由于SF-HR有趣的对角分子形状，它在供体和受体之间具有协调的分子聚集。此外，在该体系中，SF-HR的能级与供体聚合物聚（3-己基噻吩）（P3HT）的能级匹配良好，这会影响有效的电荷转移和传输性能。结果，由P3HT:SF-HR光活性层制成的有机太阳能电池的功率转换效率为4.01%，开路电压为1.00 V，短路电流密度为8.23 mA cm，填充因子为49%。此外，P3HT:SF-HR薄膜相对于P3HT:PCBM表现出优异的热稳定性和光稳定性。这些结果表明，SF-HR是一种专门用于高性能有机太阳能电池的非富勒烯受体。
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