Jung Jaroslaw, Selerowicz Arkadiusz, Ulanski Jacek, Udovytska Ruslana, Luszczynska Beata, Zawadzki Artur, Rybak Andrzej
Department of Molecular Physics, Faculty of Chemistry, Lodz University of Technology, 116 Zeromskiego Str., 90-924 Lodz, Poland.
ABB Corporate Technology Center, 13A Starowislna Str., 31-038 Krakow, Poland.
Materials (Basel). 2025 Jan 2;18(1):152. doi: 10.3390/ma18010152.
In this study, it is shown that an efficient organic optocoupler (OPC) can be fabricated using commercially available and solution-processable organic semiconductors. The transmitter is a single-active-layer organic light-emitting diode (OLED) made from a well-known polyparavinylene derivative, Super Yellow. The receiver is an organic light-emitting diode (OLSD) with a single active layer consisting of a mixture of the polymer donor PTB7-Th and the low-molecular-weight acceptor ITIC; the receiver operates without an applied reverse voltage. OLED and OLSD have the same geometry and simple structure without any interlayers: glass/ITO/PEDOT:PSS/(active layer)/Ca/Al; the OPC is formed by OLED and OLSD which adhere tightly to each other. Despite its simple structure, the OPC showed a current transfer ratio of 0.13%, good linearity, and good dynamic performance: a three-decibel cutoff frequency of 170 kHz and response times to a step change in current at the OPC input of 2 μs. Compared to most organic OPC devices with similar performance parameters, where the transmitter and receiver have complex structures with additional interlayers between the active layers and electrodes and the need to apply a reverse voltage to the receiver, the simple design of our OPC reduces the number of fabrication steps and greatly simplifies the device fabrication process.
在本研究中，结果表明，可以使用市售且可溶液加工的有机半导体制造一种高效的有机光耦合器（OPC）。发射器是由一种知名的聚对亚苯基亚乙烯基衍生物“超级黄”制成的单活性层有机发光二极管（OLED）。接收器是一种有机发光二极管（OLSD），其单活性层由聚合物给体PTB7-Th和低分子量受体ITIC的混合物组成；接收器在不施加反向电压的情况下工作。OLED和OLSD具有相同的几何形状和简单结构，没有任何中间层：玻璃/ITO/PEDOT:PSS/（活性层）/Ca/Al；OPC由紧密贴合的OLED和OLSD形成。尽管结构简单，但该OPC的电流传输比为0.13%，具有良好的线性度和动态性能：三分贝截止频率为170 kHz，对OPC输入端电流阶跃变化的响应时间为2 μs。与大多数具有类似性能参数的有机OPC器件相比，那些器件的发射器和接收器具有复杂结构，在活性层和电极之间有额外的中间层，并且需要向接收器施加反向电压，我们的OPC的简单设计减少了制造步骤的数量，极大地简化了器件制造过程。
