Tetra-nuclear Zinc(II) complex Zn₄O(AID)₆ [AID = 7-azaindolate] is a wide band gap luminescent material that exhibits efficient emission matching the absorption spectra of organic donor materials such as polythiophene (P3HT). This work demonstrates polymer solar cells (PSC) based on P3HT:PCBM (phenyl-C₆₁-butyric acid methyl ester) blend active layer with a Zn₄O(AID)₆ cathode interfacial layer achieving a power conversion efficiency (PCE) significantly higher than that of the reference devices. The energy level and impedance spectroscopy analysis show that the Zn₄O(AID)₆ cathode interfacial layer acts as an efficient exciton/hole blocking layer, and reduces charge recombination rate with more efficient electron extraction. The Zn₄O(AID)₆ interfacial layer also helps achieve longer lifetime of PSC devices. The improved efficiency and stability combined with low cost and nontoxicity of Zn₄O(AID)₆ make it a promising cathode interfacial material for high-performance and stable PSC devices.

四核锌（II）配合物Zn ₄ O（AID）₆ [AID = 7-氮杂吲哚]是一种宽带隙发光材料，其发光效率与有机供体材料（如聚噻吩（P3HT））的吸收光谱相匹配。这项工作证明了基于P3HT：PCBM（苯基-C _61-丁酸甲酯）混合活性层与Zn ₄ O（AID）₆阴极界面层的聚合物太阳能电池（PSC）可以显着提高功率转换效率（PCE）比参考设备。能级和阻抗谱分析表明，Zn ₄ O（AID）₆阴极界面层充当有效的激子/空穴阻挡层，并通过更有效的电子提取降低电荷复合率。Zn ₄ O（AID）₆界面层还有助于延长PSC器件的使用寿命。Zn ₄ O（AID）_6的高效率和稳定性以及低成本和无毒性使其成为用于高性能和稳定PSC器件的有希望的阴极界面材料。