Erbium (III) tris(8-hydroxyquinoline) ErQ complex is emerging as a class of novel luminescent material for interfacial engineering to improve the performance of organic solar cells (OSCs). In the present work, ErQ doped ZnO solution has successfully been prepared by the sol-gel route at room temperature as an electron transport layer for high efficient OSCs. The modified ErQ:ZnO films can yield not only higher electron mobility, good surface quality by the passivation of ZnO defects, but also slightly higher work-function and thereby shortening in the leakage current, which subsequently enhanced power conversion efficiency (PCE). As a result, the remarkable PCE increasing from 3.62% to 4.26% for poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (P3HT:PC₆₁BM) and from 6.84% to 7.95% for polymer thieno [3,4-b] thiophene/benzodithiophene: [6,6] phenyl-C₇₁-butyric acid methyl ester (PTB7:PCB₇₁M) devices could be achieved upon an incorporating ErQ:ZnO interfacial layer.

III（III）三（8-羟基喹啉）ErQ配合物正作为一类新型的发光材料用于界面工程，以改善有机太阳能电池（OSC）的性能。在目前的工作中，已通过室温下的溶胶-凝胶法成功地制备了掺ErQ的ZnO溶液，作为高效OSC的电子传输层。改性的ErQ：ZnO膜不仅可以通过钝化ZnO缺陷产生更高的电子迁移率，良好的表面质量，而且还可以产生稍高的功函数，从而缩短漏电流，从而提高了功率转换效率（PCE）。结果，聚（3-己基噻吩）：苯基-C61-丁酸甲酯（P3HT：PC ₆₁）的显着PCE从3.62％增加到4.26％BM），对于聚合物噻诺[3,4-b]噻吩/苯并二噻吩：[6,6]苯基-C _71-丁酸甲酯（PTB7：PCB ₇₁ M），可以实现6.84％-7.95％掺入ErQ：ZnO界面层。