Ren, Aobo;
Wang, Hao;
Dai, Linjie;
Xia, Junfei;
Bai, Xinyu;
Butler-Caddle, Edward;
Smith, Joel A;
... Zhang, Wei; + view all
(2023)
High-bandwidth perovskite photonic sources on silicon.
Nature Photonics
, 17
pp. 798-805.
10.1038/s41566-023-01242-9.
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Abstract
Light-emitting diodes (LEDs) are ubiquitous in modern society, with applications spanning from lighting and displays to medical diagnostics and data communications. Metal-halide perovskites are promising materials for LEDs because of their excellent optoelectronic properties and solution processability. Although research has progressed substantially in optimizing their external quantum efficiency, the modulation characteristics of perovskite LEDs remain unclear. Here we report a holistic approach for realizing fast perovskite photonic sources on silicon based on tailoring alkylammonium cations in perovskite systems. We reveal the recombination behaviour of charged species at various carrier density regimes relevant for their modulation performance. By integrating a Fabry–Pérot microcavity on silicon, we demonstrate perovskite devices with efficient light outcoupling. We achieve device modulation bandwidths of up to 42.6 MHz and data rates above 50 Mbps, with further analysis suggesting that the bandwidth may exceed gigahertz levels. The principles developed here will support the development of perovskite light sources for next-generation data-communication architectures. The demonstration of solution-processed perovskite emitters on silicon substrates also opens up the possibility of integration with micro-electronics platforms.
| Type: | Article |
|---|---|
| Title: | High-bandwidth perovskite photonic sources on silicon |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1038/s41566-023-01242-9 |
| Publisher version: | https://doi.org/10.1038/s41566-023-01242-9 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | CHARGE-CARRIER MOBILITIES, DYNAMICS, EMISSION, LIGHT-EMITTING-DIODES, Optics, OPTOELECTRONIC APPLICATIONS, Physical Sciences, Physics, Physics, Applied, PYTHON LIBRARY, Science & Technology |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10207698 |
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