Triple-cation perovskite solar cells for visible light communications

Natalie Mica, Rui Bian, Pavlos Manousiadis, Lethy Krishnan Jagadamma, Imam Tavakklolnia, Harald Haas, Graham Turnbull, Ifor David William Samuel

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)
1 Downloads (Pure)

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.
Original languageEnglish
Pages (from-to)A16-A24
Number of pages9
JournalPhotonics Research
Volume8
Issue number8
Early online date14 Jul 2020
DOIs
Publication statusPublished - 1 Aug 2020

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