Organic photovoltaics for simultaneous energy harvesting and high-speed MlMO optical wireless communications

• 作者: Iman Tavakkolnia Lethy K.Jagadamma Rui Bian Pavlos P.Manousiadis Stefan Videv Graham A.Turnbull Ifor D.W.Samuel Harald Haas
• 来源期刊: 光：科学与应用（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: Articles
• 页码范围: 379-389
• 页数: 11页
• 语种: 英文

摘要

We show that organic photovoltaics (OPVs) are suitable for high-speed optical wireless data receivers that can alsoharvest power. In addition, these OPVs are of particular interest for indoor applications, as their bandgap is larger than that of silicon, leading to better matching to the spectrum of artificial light. By selecting a suitable combination of a narrow bandgap donor polymer and a nonfullerene acceptor, stable OPVs are fabricated with a power conversion efficiency of 8.8％under 1 Sun and 14％under indoor lighting conditions. In an optical wireless communication experiment, a data rate of 363 Mb/s and a simultaneous harvested power of 10.9 mW are achieved in a 4-by-4 multiple-input multiple-output (MIMO) setup that consists of four laser diodes, each transmitting 56 mW optical power and four OPV cells on a single panel as receivers at a distance of 40 cm. This result is the highest reported data rate using OPVs as data receivers and energy harvesters. This finding may be relevant to future mobile communication applications because it enables enhanced wireless data communication performance while prolonging the battery life in a mobile device.