Details

Autor(en) / Beteiligte

• Qin, Feifei
• Chen, Feng
• Cao, Yue
• Wang, Linning
• Wang, Chengwei
• Liao, Yanan
• Dai, Yuhang
• Lu, Junfeng
• Lan, Xinru
• Wang, Xu
• Tang, XianWu
• Liu, Xiaoyan
• Zhu, Gangyi
• Wang, Yongjin

Titel

Optical wireless communication using a flexible and waterproof perovskite color converter

Ist Teil von

• Optics letters, 2024-05, Vol.49 (9), p.2229-2232

Ort / Verlag

United States: Optical Society of America

Erscheinungsjahr

2024

Link zum Volltext

Quelle

Optica Publishing Group Journals

Beschreibungen/Notizen

• In this Letter, the CH NH PbBr nanocrystals (NCs) are embedded into the interstices of the fluorine (polyvinyl fluoride/polyvinylidene fluoride, PVF/PVDF) matrix on polyethylene terephthalate (PET) substrate to introduce new advantages, such as being flexible and waterproof, while maintaining the high optical performance of perovskites. The sample's photoluminescence (PL) spectra under 325 nm laser is a green emission peaked at 537 nm with full width at half maximum (FWHM) of about 21.2 nm and a fast PL decay time. As a color converter, it shows high optical absorption and can transform light from solar-blind ultraviolet to a blue region into a green region in air, water, and bending conditions. While excited by a 270 nm ultraviolet light-emitting diode (LED), the system's observed -3 dB bandwidth with the color converter is near 4.4 MHz in air and water conditions with well-eye diagrams at a data rate of 30 Mbps. Finally, we demonstrate an audio transmission application with an ultraviolet light source, a color conversion layer, and a low-cost silicon-based photodetector.