Song Jiayi, Wang Cheng, Guan Yunxia, Bao Xi, Li Wan Jiao, Chen Lijia, Niu Lianbin
College of Physics and Electronic Engineering, Chongqing Normal University Chongqing 401331 People's Republic of China
RSC Adv. 2023 Aug 7;13(34):23619-23625. doi: 10.1039/d3ra03608a. eCollection 2023 Aug 4.
Organic light-emitting diodes (OLEDs) are considered one of the most promising new display technologies owing to their advantages, such as all-solid-state, high color gamut, and wide viewing angle. However, in terms of special fields, the brightness, lifetime, and stability of the devices need further improvement. Therefore, heterojunction devices with different concentrations were prepared to regulate device brightness. The brightness of the bulk heterojunction device is enhanced by 9740 cd m, with a growth rate of about 26.8%. The impact of various temperatures and various exciton concentrations on the device magneto-conductance (MC) and magneto-electroluminescence (MEL) was investigated. Experimental results demonstrate that the exciton concentration inside the device can be tuned to improve optoelectronic properties and organic magnetic effects. The complex spin mixing process inside the bulk heterojunction device is deeply investigated, which provides a reliable basis for the design of bulk heterojunction devices.
有机发光二极管（OLED）因其具有全固态、高色域和宽视角等优点，被认为是最有前途的新型显示技术之一。然而，在特殊领域方面，器件的亮度、寿命和稳定性仍需进一步提高。因此，制备了不同浓度的异质结器件来调节器件亮度。本体异质结器件的亮度提高了9740 cd/m²，增长率约为26.8%。研究了不同温度和不同激子浓度对器件磁电导（MC）和磁电致发光（MEL）的影响。实验结果表明，可以调节器件内部的激子浓度以改善光电性能和有机磁效应。深入研究了本体异质结器件内部复杂的自旋混合过程，为本体异质结器件的设计提供了可靠依据。
