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| Home > Publications database > Beyond Current Achievements in III-Nitride nano-LED applications |
| Conference Presentation (After Call) | FZJ-2023-00996 |
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2022
Abstract: Nano light emitting diodes (nano-LEDs) could play an important role as key components for next generation on chip optical communication, optical computing technologies, highly resolved illumination microscopy, advanced “near” field lithographical techniques and many others [1–3]. In this contribution we will first provide a general outlook of nano-LED technology related to its emerging applications in green IT and the challenges facing nano-LED fabrication and characteristics. Then we will present nano-LEDs integrated into a vertical device layout serving as a testing platform for correlative simultaneous Raman spectroscopy investigations in a bottom-up configuration. The platform enables the induction of structural / phase changes and their simultaneous optical characterization. The nano-LEDs, which emitted optical pulses in the range from ~20 ns up to 100 ns, are coupled with freestanding Ge1Sb2Te4 nano-membranes. The correlative studies reveal that the nano-LEDs locally initialize substantial changes in the nano-membrane phase i.e. state of the Ge1Sb2Te4. The presented results demonstrate the suitability and reliability of the vertically integrated nano-LEDs as a testing platform and for driving future on chip integrated electro-optic convertors. Hence, they represent a significant step forwards towards future optical computing techniques based on all optical switch/transmistor devices.[1] M. Xie, Y. Jiang, X. Gao, W. Cai, J. Yuan, H. Zhu, Y. Wang, X. Zeng, Z. Zhang, Y. Liu, and H. Amano, Adv. Eng. Mater. 2100582 (2021).[2] N. Franch, J. Canals, V. Moro, O. Alonso, S. Moreno, A. Vilà, J.D. Prades, J. Gülink, H.S. Wasisto, A. Waag, and Á. Diéguez, in Nov. Opt. Syst. Methods, Appl. XXII, edited by C.F. Hahlweg and J.R. Mulley (SPIE, 2019), p. 23.[3] M. Mikulics, Z. Sofer, A. Winden, S. Trellenkamp, B. Förster, J. Mayer, and H.H. Hardtdegen, Nanoscale Adv. 2, 5421 (2020).
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