Guo Xiaohang, Benavides-Guerrero Jaime, Banerjee Debika, Roy-Moisan Francois, Cloutier Sylvain G
École de Technologie Supérieure, 1100 Notre Dame Street West, Montreal, Quebec H3C 1K3, Canada.
ACS Omega. 2019 Nov 8;4(21):19287-19292. doi: 10.1021/acsomega.9b02666. eCollection 2019 Nov 19.
This paper proposes a new paradigm in polymer light-emitting diode (PLED) fabrication by using a uniform electrosprayed microparticle film as the active layer. Among the seven electrospraying parameters analyzed, three crucial parameters are statistically identified and optimized to obtain thin electrosprayed microparticle layers. Using optimized electrospraying conditions, single-color red-emitting PLED (MEH-PPV) with a peak current density of 16.1 mA/mm under a 13.5 V bias and a peak external quantum efficiency of 3.2% are successfully fabricated. Finally, a combinatorial approach is implemented using both MEH-PPV (red-emitting) and F8BT (green-emitting) polymer microparticles at different mixing ratios to tune the emission spectrum of the devices. As such, it has been demonstrated that hybrid multilayer films using different organic materials with nonorthogonal solvents can be produced using this new approach. The parameter analysis and color-tunable properties pave the way towards white light PLED fabrication.
本文提出了一种聚合物发光二极管（PLED）制造的新范式，即使用均匀的电喷雾微粒膜作为有源层。在分析的七个电喷雾参数中，通过统计识别并优化了三个关键参数，以获得薄的电喷雾微粒层。使用优化的电喷雾条件，成功制造出了在13.5V偏压下峰值电流密度为16.1mA/mm²且峰值外量子效率为3.2%的单色发红光PLED（MEH-PPV）。最后，采用组合方法，以不同混合比例使用MEH-PPV（发红光）和F8BT（发绿光）聚合物微粒来调节器件的发射光谱。因此，已证明使用这种新方法可以生产使用具有非正交溶剂的不同有机材料的混合多层膜。参数分析和颜色可调特性为白光PLED制造铺平了道路。
