Ren, A. et al. (2023) High-bandwidth perovskite photonic sources on silicon. Nature Photonics, 17(9), pp. 798-805. (doi: 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.
| Item Type: | Articles |
|---|---|
| Additional Information: | This work was supported by the National Key Research and Development Program of China (2021YFA1401100), the National Natural Science Foundation of China (61901268 and 52202165), the ‘111 Project’ (B20030), the Fundamental Research Funds for the Central Universities (ZYGX2019Z018), the Innovation Group Project of Sichuan Province (20CXTD0090), the UESTC Shared Research Facilities of Electromagnetic Wave and Matter Interaction (Y0301901290100201) and EPSRC (2015, EP/M015165/1; 2021, EP/V048732/1; 2016, EP/ N010825/1; 2021, EP/V061747/1). W.Z. acknowledges an EPSRC New Investigator Award (2018, EP/R043272/1) and the Newton Advanced Fellowship (192097) for financial support. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Sweeney, Professor Stephen |
| Authors: | Ren, A., Wang, H., Dai, L., Xia, J., Bai, X., Butler-Caddle, E., Smith, J. A., Lai, H., Ye, J., Li, X., Zhan, S., Yao, C., Li, Z., Tang, M., Liu, X., Bi, J., Li, B., Kai, S., Chen, R., Yan, H., Hong, J., Yuan, L., Marko, I. P., Wonfor, A., Fu, F., Hindmarsh, S. A., Sanchez, A. M., Lloyd-Hughes, J., Sweeney, S. J., Rao, A., Greenham, N. C., Wu, J., Li, Y., Cheng, Q., Friend, R. H., Penty, R. V., White, I. H., Snaith, H. J., and Zhang, W. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Journal Name: | Nature Photonics |
| Publisher: | Nature Research |
| ISSN: | 1749-4885 |
| ISSN (Online): | 1749-4893 |
| Published Online: | 20 July 2023 |
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