Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , 1037 Luoyu Road, Wuhan 430074, China.
PSA Groupe, Direction Scientifique, Centre Technique de Vélizy , route de Gisy, 78140 Vélizy-Villacoublay, France.
ACS Appl Mater Interfaces. 2017 May 3;9(17):14990-14997. doi: 10.1021/acsami.7b03070. Epub 2017 Apr 18.
Here we demonstrate a simple and effective method of fabricating polymeric scattering substrate for flexible organic light-emitting diodes (OLEDs) that require no costly patterning, etching, or molding processes, aspects that are desirable for the commercialization of large-scale lighting panels. Systematic study of the influences of relative index of refraction, particle size, and doping concentration on transmittance and haze of transparent colorless polyimide (cPI) films was carried out. It was found that the reduction of transmittance and haze of the doped films decreases along with the decrease of the difference of refractive index between the particles and polymer matrix, and it could be compensated by the increase of particle size or doping concentration.
在这里，我们展示了一种简单而有效的制造聚合物散射衬底的方法，用于柔性有机发光二极管（OLED），这种方法不需要昂贵的图案化、刻蚀或成型工艺，这对于大规模照明面板的商业化是理想的。我们系统地研究了相对折射率、颗粒大小和掺杂浓度对透明无色聚酰亚胺（cPI）薄膜透光率和雾度的影响。结果发现，掺杂膜的透光率和雾度随着粒子和聚合物基体之间折射率差值的减小而降低，可以通过增加粒子尺寸或掺杂浓度来补偿。
