A multifunctional display based on photo-responsive perovskite light-emitting diodes

Journal article

Current display screens are typically only used for information display, but can have a range of different sensors integrated into them for functions such as touch control, ambient light sensing and fingerprint sensing. Photo-responsive light-emitting diodes (LEDs), which can display information and respond to light excitation, could be used to develop future ultra-thin and large screen-to-body ratio screens. However, photo-response is difficult to achieve with conventional display technologies. Here, we report a multifunctional display that uses photo-responsive metal halide perovskite LEDs as pixels. The perovskite LED display can be simultaneously used as a touch screen, ambient light sensor and image sensor (including for fingerprint drawing) without integrating any additional sensors. The light-to-electricity conversion efficiency of the pixels also allow the display to act as a photovoltaic device that can charge the equipment.

Authors: Bao, C; Yuan, Z; Niu, W; Yang, J; Wang, Z

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Nature Research
• Journal: Nature Electronics
• Volume: 7
• Issue: 5
• Pages: 375-382
• Publication date: 2024-04-10
• Acceptance date: 2024-03-14
• DOI: 10.1038/s41928-024-01151-x
• EISSN: 2520-1131
• Language: English