In the time of Internet of Things (IoT), alternating current electroluminescence (ACEL) has unique advantages in the fields of smart display and human–computer interaction. However, their reliance on external high-voltage AC power supplies poses challenges in terms of wearability and limits their practical application. This paper proposed an innovative scheme for preparing a feather triboelectric nanogenerator (F-TENG) using recyclable and environmentally friendly material. The highest open-circuit voltage, short-circuit current, and transferred charge of SF₆-treated F-TENGs can reach 449 V, 63 μA, and 152 nC, which enables easy lighting of BaTiO₃-doped ACEL devices. Using a human electrical potential, a single-electrode F-TENG is combined with ACEL device for self-powered fingerprint recognition display. These works achieve self-powered flexible wearable ACEL devices, which are not only efficient and portable but also have good application prospects in the human–computer interaction, functional displays, and wearable electronic devices.