Photonics Research, 2020, 8 (8): 08000A16, Published Online: Jul. 8, 2020  

Triple-cation perovskite solar cells for visible light communications Download: 727次

Author Affiliations
1 Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, St Andrews, Fife KY16 9SS, UK
2 LiFi Research and Development Centre, Institute for Digital Communications, School of Engineering, University of Edinburgh, Edinburgh EH9 3FD, UK
3 e-mail: H.Haas@ed.ac.uk
4 e-mail: gat@st-andrews.ac.uk
5 e-mail: idws@st-andrews.ac.uk
Abstract
Hybrid perovskite materials are widely researched due to their high absorptivity, inexpensive synthesis, and promise in photovoltaic devices. These materials are also of interest as highly sensitive photodetectors. In this study, their potential for use in visible light communication is explored in a configuration that allows for simultaneous energy and data harvesting. Using a triple-cation material and appropriate device design, a new record data rate for perovskite photodetectors of 56 Mbps and power conversion efficiencies above 20% under white LED illumination are achieved. With this device design, the ?3 dB bandwidth is increased by minimizing the dominating time constant of the system. This correlation between the bandwidth and time constant is proved using measurements of time-resolved photoluminescence, transient photovoltage, and device resistance.

Natalie A. Mica, Rui Bian, Pavlos Manousiadis, Lethy K. Jagadamma, Iman Tavakkolnia, Harald Haas, Graham A. Turnbull, Ifor D. W. Samuel. Triple-cation perovskite solar cells for visible light communications[J]. Photonics Research, 2020, 8(8): 08000A16.

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