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Broadband transparent optical phase change materials for high-performance nonvolatile photonics

Open access
Zhang, Yifei, Chou, Jeffrey B., Li, Junying, Li, Huashan, Du, Qingyang, Yadav, Anupama, Zhou, Si, Shalaginov, Mikhail Y., Fang, Zhuoran, Zhong, Huikai, Roberts, Christopher, Robinson, Paul, Bohlin, Bridget, Ríos, Carlos, Lin, Hongtao, Kang, Myungkoo, Gu, Tian, Warner, Jamie, Liberman, Vladimir, Richardson, Kathleen, Hu, Juejun·2019·Nature Communications

Abstract

Optical phase change materials (O-PCMs), a unique group of materials featuring exceptional optical property contrast upon a solid-state phase transition, have found widespread adoption in photonic applications such as switches, routers and reconfigurable meta-optics. Current O-PCMs, such as Ge–Sb–Te (GST), exhibit large contrast of both refractive index (Δ n) and optical loss (Δ k), simultaneously. The coupling of both optical properties fundamentally limits the performance of many applications. Here we introduce a new class of O-PCMs based on Ge–Sb–Se–Te (GSST) which breaks this traditional coupling. The optimized alloy, Ge 2 Sb 2 Se 4 Te 1, combines broadband transparency (1–18.5 μm), large optical contrast (Δ n = 2.0), and significantly improved glass forming ability, enabling an entirely new range of infrared and thermal photonic devices. We further demonstrate nonvolatile integrated optical switches with record low loss and large contrast ratio and an electrically-addressed spatial light modulator pixel, thereby validating its promise as a material for scalable nonvolatile photonics.

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Metadata

Authors
Zhang, Y., Chou, J. B., Li, J., Li, H., Du, Q., Yadav, A., Zhou, S., Shalaginov, M. Y., Fang, Z., Zhong, H., Roberts, C., Robinson, P., Bohlin, B., Ríos, C., Lin, H., Kang, M., Gu, T., Warner, J., Liberman, V., Richardson, K., & Hu, J.
Venue
Nature Communications
Published
2019-09-30
Volume
10
Issue
1
Pages
4279-4279
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2898651003
Cited by
726
References
4
FWCI
24.31
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: Broadband transparent optical phase change materials for high-performance nonvolatile photonics. https://app.cochat.ai/papers/10.1038/s41467-019-12196-4
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Zhang, Y., Chou, J. B., Li, J., Li, H., Du, Q., Yadav, A., Zhou, S., Shalaginov, M. Y., Fang, Z., Zhong, H., Roberts, C., Robinson, P., Bohlin, B., Ríos, C., Lin, H., Kang, M., Gu, T., Warner, J., Liberman, V., . . . Hu, J. (2019). Broadband transparent optical phase change materials for high-performance nonvolatile photonics. Nature Communications. https://doi.org/10.1038/s41467-019-12196-4

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.