Organic electroluminescent device and an organic electroluminescent apparatus

US11205763B2 · kind B2 · utility

Assignee

• Yungu (Gu'an) Technology Co., Ltd. · CN

Inventors

• Weiwei Li · Langfang, CN
• Lin He · Irvine, US
• Mengzhen LI · Beijing, CN
• Jingwen Tian · Langfang, CN
• Tiantian LI · 东风镇, CN

Key dates

• Filing date: Dec 9, 2019
• Grant date: Dec 21, 2021
• Expiry date: Dec 29, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K71/135

Abstract

An organic electroluminescent device and an organic electroluminescent apparatus are disclosed. The organic electroluminescent device includes a first electrode layer, a first carrier functional layer, a light-emitting layer and a second electrode layer stacked in sequence, wherein a P-doped layer is arranged between the first carrier functional layer and the light-emitting layer. Thus the energy level bending of an interface between the first carrier functional layer and the light-emitting layer is modified, and the hole injection potential barrier at the interface between the two is reduced, thereby effectively reducing the turn-on voltage of the organic electroluminescent device.