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采用HAT-CN/Cu Pc作为有机电致发光二极管(OLED)蓝光ADN器件的组合空穴注入层(HIL)。通过采用该组合HIL后,在保证器件电流效率不下降的情况下有效地降低器件的驱动电压。一方面,这是利用HAT-CN可以大幅提高Cu Pc薄膜的有序度,有效地降低Cu Pc HIL的电阻;另一方面是因为HAT-CN/Cu Pc可以实现空穴的有效注入。这两方面因素最终使得ADN蓝光器件的启亮电压降低至3.4 V,较采用Cu Pc HIL的ADN蓝光器件低0.5 V。
HAT-CN / Cu Pc was used as a combined hole injection layer (HIL) for an organic light-emitting diode (OLED) blue light ADN device. By using this combination of HIL, the device’s driving voltage is effectively reduced while ensuring that the device current efficiency is not degraded. On the one hand, this is the use of HAT-CN can significantly improve the order of the Cu Pc film, effectively reducing the resistance of Cu Pc HIL; the other hand is because HAT-CN / Cu Pc can achieve effective hole injection. Both of these factors ultimately reduced the turn-on voltage of ADN blue devices to 3.4 V, 0.5 V lower than that of ADN blue devices using Cu Pc HIL.