Learning from failure: boosting cycling endurance of optical phase change materials

Cosmin-Constantin Popescu; Steven Vitale; Christopher Roberts; Paul Miller; Kiumars Aryana; Myungkoo Kang; Kathleen Richardson; Hyun Jung Kim; William Humphreys; Tian Gu; Juejun Hu

doi:10.1117/12.2657208

15 March 2023 Learning from failure: boosting cycling endurance of optical phase change materials

Cosmin-Constantin Popescu, Steven Vitale, Christopher Roberts, Paul Miller, Kiumars Aryana, Myungkoo Kang, Kathleen Richardson, Hyun Jung Kim, William Humphreys, Tian Gu, Juejun Hu

Author Affiliations +

Proceedings Volume 12431, Photonic and Phononic Properties of Engineered Nanostructures XIII; 124310B (2023) https://doi.org/10.1117/12.2657208
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Chalcogenide phase change materials (PCMs) are a unique class of compounds whose switchable optical and electronic properties have fueled an explosion of emerging applications in microelectronics and microphotonics. The key to any application is the ability of PCMs to reliably switch between crystalline and amorphous states over a large number of cycles. While this issue has been extensively studied in the case of microelectronic memories, current PCM-based optical devices suffer from much inferior endurance. To understand the failure mechanisms limiting endurance of PCMs specifically in microphotonic devices, we have developed an on-chip resistive micro-heater platform and an automatic multi-modal characterization system to analyze cycling performance of optical PCMs. Reversible switching of large-area PCM devices over 50,000 cycles was demonstrated.

Conference Presentation

Citation Download Citation

Cosmin-Constantin Popescu, Steven Vitale, Christopher Roberts, Paul Miller, Kiumars Aryana, Myungkoo Kang, Kathleen Richardson, Hyun Jung Kim, William Humphreys, Tian Gu, and Juejun Hu "Learning from failure: boosting cycling endurance of optical phase change materials", Proc. SPIE 12431, Photonic and Phononic Properties of Engineered Nanostructures XIII, 124310B (15 March 2023); https://doi.org/10.1117/12.2657208

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