Huang Luchan, Chen Zhuangzhuang, Chen Wenwen, Rong Qikun, Li Na, Nian Li
Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute of Electronic Paper Displays,South China Academy of Advanced Optoelectronics, South China Normal University, Guangzhou 510006, China.
School of Information and Optoelectronic Science and Engineering, South China Normal University, Guangzhou 510006, China.
ACS Appl Mater Interfaces. 2024 Dec 11;16(49):68569-68578. doi: 10.1021/acsami.4c14315. Epub 2024 Nov 29.
Interfacial engineering is essential to achieve optical efficiencies and facilitate the industrialization of organic solar cells (OSCs). By doping organosilica nanodots (OSiNDs) into zinc oxide (ZnO), we have developed a hybrid ZnO/OSiNDs (4 wt %) cathode interface layer (CIL) that significantly enhances the overall performance of inverted organic solar cells (i-OSCs). In the PM6/BTP-eC9 active layer system, i-OSC devices with a ZnO/OSiNDs (4 wt %) CIL exhibit a superior power conversion efficiency (PCE) of 17.49%, surpassing that of reference devices with a pure ZnO CIL (15.88%). The OSiNDs not only modulate the work function of ZnO, thereby facilitating the carrier transport between ZnO interface and active layer, but also enhance device stability. After exposure to 1200 min of 100 mW/cm illumination, including UV light, the devices retain 89.4% of their initial PCE, whereas devices based solely on ZnO retain only 57.7% under identical conditions. In this study, we present pioneering insights into the selection of environmentally friendly and cost-effective OSiNDs for modifying ZnO to create organic-inorganic hybrid coordination complexes as effective CILs.
界面工程对于实现有机太阳能电池（OSC）的光学效率并推动其产业化至关重要。通过将有机硅纳米点（OSiNDs）掺杂到氧化锌（ZnO）中，我们开发了一种混合的ZnO/OSiNDs（4 wt%）阴极界面层（CIL），该界面层显著提高了倒置有机太阳能电池（i-OSC）的整体性能。在PM6/BTP-eC9活性层体系中，具有ZnO/OSiNDs（4 wt%）CIL的i-OSC器件展现出17.49%的优异功率转换效率（PCE），超过了具有纯ZnO CIL的参考器件（15.88%）。OSiNDs不仅调节了ZnO的功函数，从而促进了ZnO界面与活性层之间的载流子传输，还增强了器件稳定性。在暴露于包括紫外光在内的100 mW/cm²光照1200分钟后，这些器件保留了其初始PCE的89.4%，而仅基于ZnO的器件在相同条件下仅保留了57.7%。在本研究中，我们展示了关于选择环境友好且经济高效的OSiNDs来修饰ZnO以创建有机-无机混合配位复合物作为有效CIL的开创性见解。
