School of Physics and Electronic Information, Yantai University, Yantai 264005, China.
School of Artificial Intelligence, Beijing Technology and Business University, Beijing, 100048, China.
Phys Chem Chem Phys. 2023 Jun 7;25(22):15263-15270. doi: 10.1039/d3cp01454a.
In this study, we improved the performance of ternary organic solar cells (OSCs) using metal oxides (p-type NiO and n-type SnO) as the charge-transport layers (CTLs). The use of NiO and SnO can facilitate charge transportation and suppress charge recombination in PM6:IDIC:Y6-based ternary OSCs, which is beneficial for boosting their performance. As a result, the OSCs with CTLs of NiO and SnO exhibited an improved power conversion efficiency (PCE) of 16.2% (on average), which is higher than that (15.1%) of the control OSCs using poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) and LiF as the CTLs. The stability of the OSCs was simultaneously improved with the PCE degradation significantly suppressed upon using NiO and SnO. After 10 days of storage and measurement under ambient conditions, the PCE degradation was dramatically decreased from 49.7% to 20.3%, which was induced by the high intrinsic stability of NiO and SnO. The best OSC using the CTLs of NiO and SnO showed a champion PCE of 16.6%, with a stable power output and negligible hysteresis.
在这项研究中，我们使用金属氧化物（p 型 NiO 和 n 型 SnO）作为电荷传输层（CTL）来提高三元有机太阳能电池（OSC）的性能。NiO 和 SnO 的使用可以促进 PM6:IDIC:Y6 基三元 OSC 中的电荷传输并抑制电荷复合，这有利于提高其性能。结果，使用 NiO 和 SnO 作为 CTL 的 OSC 的功率转换效率（PCE）提高到了 16.2%（平均值），高于使用聚（3,4-乙二氧基噻吩）：聚（苯乙烯磺酸盐）和 LiF 作为 CTL 的对照 OSC 的 15.1%。同时，通过使用 NiO 和 SnO 提高了 OSC 的稳定性，显著抑制了 PCE 的降解。在环境条件下储存和测量 10 天后，由于 NiO 和 SnO 的固有高稳定性，PCE 降解从 49.7%急剧降低至 20.3%。使用 NiO 和 SnO 作为 CTL 的最佳 OSC 表现出 16.6%的冠军 PCE，具有稳定的功率输出和可忽略的迟滞。
