School of Materials Science and Engineering, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou, 510640, P. R. China.
School of Minerals Processing and Bioengineering, Central South University, Changsha, 410083, P. R. China.
Adv Sci (Weinh). 2023 Mar;10(9):e2206748. doi: 10.1002/advs.202206748. Epub 2023 Jan 29.
Dielectric encapsulation materials are promising for solar cell areas, but the unsatisfactory light-management capability and relatively poor dielectric properties restrict their further applications in photovoltaic and microelectronic devices. Herein, an interface fusion strategy to engineer the interface of MOF (UiO-66-NH ) with anhydride terminated imide oligomer (6FDA-TFMB) is designed and a novel MOF cluster (UFT) with enhanced forward scattering and robust porosity is prepared. UFT is applied as an optical and dielectric modifier for bisphenol A epoxy resin (DGEBA), and UFT epoxy composites with high transmittance (>80%), tunable haze (45-58%) and excellent dielectric properties can be prepared at low UFT contents (0.5-1 wt%), which delivers an optimal design for dielectric encapsulation systems with efficient light management in solar cells. Additionally, UFT epoxy composites also show excellent UV blocking, and hydrophobic, thermal and mechanical properties. This work provides a template for the synthesis of covalent bond-mediated nanofillers and for the modulation of haze and dielectric properties of dielectric encapsulation materials for energy systems, semiconductors, microelectronics, and more.
介电封装材料在太阳能电池领域具有广阔的应用前景，但不理想的光管理能力和相对较差的介电性能限制了其在光伏和微电子器件中的进一步应用。在此，设计了一种界面融合策略，用于对 MOF（UiO-66-NH ）与酸酐封端酰亚胺低聚物（6FDA-TFMB）的界面进行工程化处理，并制备了一种具有增强正向散射和稳健多孔性的新型 MOF 团簇（UFT）。UFT 被用作双酚 A 环氧树脂（DGEBA）的光学和介电改性剂，在低 UFT 含量（0.5-1wt%）下，可制备出具有高透光率（>80%）、可调雾度（45-58%）和优异介电性能的 UFT 环氧树脂复合材料，为具有高效光管理的太阳能电池介电封装系统提供了理想的设计。此外，UFT 环氧树脂复合材料还表现出优异的 UV 阻断、疏水性、热稳定性和机械性能。这项工作为介电封装材料的雾度和介电性能的调制以及用于能源系统、半导体、微电子等领域的共价键介导纳米填料的合成提供了模板。
