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Luo, L., Daligou, G. T. E. G., Koelling, S., Assali, S., & Moutanabbir, O. (2025). GeSn Nanowire Mid-Infrared Photodetectors and Spectrometers. Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM), MA2025-01(31), 1600-1600. External link
Daoust, P., Del Vecchio, P., Rotaru, N., Dubé-Valade, A., Assali, S., Attiaoui, A., Daligou, G. T. E. G., Koelling, S., Luo, L., Rahier, E., & Moutanabbir, O. (2025). Reduced Pressure Chemical Vapour Deposition Growth of Nuclear Spin-Free 70Ge/28Si70Ge Heterostructures on Industrial Si-Ge Substrates. Meeting abstracts/Meeting abstracts (Electrochemical Society. CD-ROM), MA2025-01(36), 1717 (1 page). External link
Gradwohl, K.-P., Cvitkovich, L., Lu, C.-H., Koelling, S., Oezkent, M., Liu, Y., Waldhör, D., Grasser, T., Niquet, Y.-M., Albrecht, M., Richter, C., Moutanabbir, O., & Martin, J. (2025). Enhanced nanoscale Ge concentration oscillations in Si/SiGe quantum well through controlled segregation [Discussion or Letter]. Nano Letters, 25(11), 4204-4210. Available
Koelling, S., Assali, S., Nadal, G., Isheim, D., Seidman, D. N., & Moutanabbir, O. (2024). Tracking of atomic planes in atom probe tomography. Journal of Applied Physics, 136(24), 1-11. Available
Moutanabbir, O., Luo, L., Kim, Y., Assali, S., Atalla, M. R. M., Joo, H.-J., Koelling, S., Chen, M., Shi, X., Burt, D., & Nam, D. (2024). Group IV Mid-Infrared Optoelectronics Leveraging Nanoscale Growth Substrates. Meeting abstracts (Electrochemical Society. CD-ROM), MA2024-02(32), 2328-2328. External link
Cardoux, C., Casiez, L., Chrétien, J., Goulain, P., Frauenrath, M., Pauc, N., Calvo, V., Coudurier, N., Rodriguez, P., Koelling, S., Moutanabbir, O., Gravrand, O., Hartmann, J.-M., Tchelnokov, A., & Reboud, V. (2024). In-Situ n-Type Doped Carrier-Injection Layers in GeSn Direct Bandgap LEDs for Methane Sensing. Meeting abstracts (Electrochemical Society. CD-ROM), MA2024-02(32), 2327-2327. External link
Rossi, M., van Schijndel, T. A. J., Lueb, P., Badawy, G., Jung, J., Peeters, W. H. J., Koelling, S., Moutanabbir, O., Verheijen, M. A., & Bakkers, E. P. A. M. (2024). Stemless InSb nanowire networks and nanoflakes grown on InP. Nanotechnology, 35(41), 415602 (11 pages). Available
Nadal, G., Moutanabbir, O., Koelling, S., Rahier, E., Montpetit, L., & Singh, S. (2024, October). Atomic-level Mapping of Cd0.9Zn0.1Te Crystals [Paper]. IEEE Nuclear Science Symposium (NSS), Medical Imaging Conference (MIC) and Room Temperature Semiconductor Detector Conference (RTSD), Tampa, FL, USA. External link
Singh, S., Montpetit, L., Nadal, G., Atalla, M., Rahier, E., Koelling, S., & Moutanabbir, O. (2024, October). Impact of Br-etching on surface and current-voltage characteristics of CZT detector [Abstract]. IEEE Nuclear Science Symposium (NSS 2024), Medical Imaging Conference (MIC 2024) and Room Temperature Semiconductor Detector Conference (RTSD 2024), Tampa, FL, USA. External link
Atalla, M. R. M., Lemieux-Leduc, C., Assali, S., Koelling, S., Daoust, P., & Moutanabbir, O. (2024). Extended short-wave infrared high-speed all-GeSn PIN photodetectors on silicon. APL Photonics, 9(5), 056103 (8 pages). Available
Bellemare, C., Atalla, M. R. M., Daoust, P., Koelling, S., Assali, S., & Moutanabbir, O. (2024, January). Silicon-integrated SWIR and MWIR GeSn photoconductive devices [Presentation]. In SPIE OPTO, 2024, San Francisco, California, United States. External link
Andelic, M., Pofelski, A., Bicket, I. C., Assali, S., Koelling, S., Luo, L., Moutanabbir, O., & Botton, G. A. (2024). Sn Alloying Impact on Structural and Electronic Properties of Core-Shell Ge-GeSn Nanowires: A TEM Study. BIO Web of Conferences, 129, 24010-24010. External link
Atalla, M. R. M., Assali, S., Daligou, G. T. E. G., Attiaoui, A., Koelling, S., Daoust, P., & Moutanabbir, O. (2024). Continuous-Wave GeSn Light-Emitting Diodes on Silicon with 2.5 μm Room-Temperature Emission. ACS Photonics, 4c00033 (7 pages). External link
Luo, L., Atalla, M. R. M., Assali, S., Koelling, S., Daligou, G. T. E. G., & Moutanabbir, O. (2024). Mid-infrared Imaging Using Strain-Relaxed Ge1–xSnx Alloys Grown on 20 nm Ge Nanowires. Nano Letters, 24(16), 4979-4986. External link
Luo, L., Atalla, M. R. M., Assali, S., Koelling, S., & Moutanabbir, O. (2024). Mid-Infrared Top-Gated Ge<inf>0.82</inf>Sn<inf>0.18</inf> Nanowire Phototransistors. Advanced Optical Materials, 2400096 (7 pages). External link
Lemieux-Leduc, C., Atalla, M. R. M., Assali, S., Koelling, S., Daoust, P., Luo, L., Daligou, G. T. E. G., Brodeur, J., Kéna-Cohen, S., Peter, Y.-A., & Moutanabbir, O. (2024). Transfer-printed Multiple GeSn Membrane Mid-infrared Photodetectors. IEEE Journal of Selected Topics in Quantum Electronics, 3450302 (12 pages). External link
Atalla, M. R. M., Assali, S., Koelling, S., Attiaoui, A., & Moutanabbir, O. (2023). Dark current in monolithic extended-SWIR GeSn PIN photodetectors. Applied Physics Letters, 122(3), 031103 (6 pages). External link
Andelic, M., Pofelski, A., Koelling, S., Assali, S., Luo, L., Moutanabbir, O., & Botton, G. (2023, April). Local Bandgap Measurement of Core/Shell Ge/GeSn Nanowires Employing Electron Energy Loss Spectroscopy in Scanning Transmission Electron Microscopy [Paper]. MRS Spring Meeting, San Francisco, California. External link
Moutanabbir, O., Assali, S., Attiaoui, A., Daligou, G. T. E. G., Daoust, P., Del Vecchio, P., Koelling, S., Luo, L., & Rotaru, N. (2023). Nuclear Spin-Depleted, Isotopically Enriched⁷⁰Ge/²⁸ Si⁷⁰Ge Quantum Wells. Advanced Materials, 2305703 (7 pages). External link
Kim, Y., Assali, S., Joo, H.-J., Koelling, S., Chen, M., Luo, L., Shi, X., Burt, D., Ikonic, Z., Nam, D., & Moutanabbir, O. (2023). Short-wave infrared cavity resonances in a single GeSn nanowire. Nature Communications, 14(1), 4393 (7 pages). Available
Koelling, S., Stehouwer, L. E. A., Paquelet Wuetz, B., Scappucci, G., & Moutanabbir, O. (2023). Three-dimensional atomic-scale tomography of buried semiconductor heterointerfaces. Advanced Materials: Interfaces, 10(3), 2201189. External link
Kim, Y.-M., Assali, S., Jung, Y., Burt, D., Zhang, L., Joo, H.-J., Koelling, S., Chen, M., Luo, L., Atalla, M. R. M., Ikonic, Z., Tan, C. S., Moutanabbir, O., & Nam, D. (2022). Evolution of Gesn Lasers Towards Photonic Integration into Practical Applications. Meeting abstracts, MA2022-02(32), 1167-1167. External link
Assali, S., Koelling, S., Abboud, Z., Nicolas, J., Attiaoui, A., & Moutanabbir, O. (2022). 500-period epitaxial Ge/Si0.18Ge0.82 multi-quantum wells on silicon. Journal of Applied Physics, 132(17), 175304 (9 pages). External link
Paquelet Wuetz, B., Losert, M. P., Koelling, S., Stehouwer, L. E. A., Zwerver, A.-M. J., Philips, S. G. J., Mądzik, M. T., Xue, X., Zheng, G., Lodari, M., Amitonov, S. V., Samkharadze, N., Sammak, A., Vandersypen, L. M. K., Rahman, R., Coppersmith, S. N., Moutanabbir, O., Friesen, M., & Scappucci, G. (2022). Atomic fluctuations lifting the energy degeneracy in Si/SiGe quantum dots. Nature Communications, 13(1), 7730 (8 pages). Available
Badawy, G., Zhang, B., Rauch, T., Momand, J., Koelling, S., Jung, J., Gazibegović, S., Moutanabbir, O., Kooi, B. J., Botti, S., Verheijen, M. A., Frolov, S. M., & Bakkers, E. P. A. M. (2022). Electronic Structure and Epitaxy of CdTe Shells on InSb Nanowires. Advanced Science, 9(12), 2105722 (8 pages). External link
Luo, L., Assali, S., Atalla, M. R. M., Koelling, S., Attiaoui, A., Daligou, G. T. E. G., Martí, S., Arbiol, J., & Moutanabbir, O. (2022). Extended-SWIR photodetection in all-Group IV core/shell nanowires. ACS Photonics, 9(3), 914-921. External link
Attiaoui, A., Assali, S., Luo, L., Daligou, G. T. E. G., Atalla, M., Koelling, S., & Moutanabbir, O. (2022, July). Group-IV GeSn nanophotonics [Paper]. IEEE Photonics Society Summer Topicals Meeting Series (SUM 2022), Cabo San Lucas, Mexico (2 pages). External link
Schellingerhout, S. G., de Jong, E. J., Gomanko, M., Guan, X., Jiang, Y., Hoskam, M. S. M., Jung, J., Koelling, S., Moutanabbir, O., Verheijen, M. A., Frolov, S. M., & Bakkers, E. P. A. M. (2022). Growth of PbTe nanowires by molecular beam epitaxy. Materials for Quantum Technology, 2(1), 015001. External link
Atalla, M. R. M., Assali, S., Koelling, S., Attiaoui, A., & Moutanabbir, O. (2022). High-Bandwidth Extended-SWIR GeSn Photodetectors on Silicon Achieving Ultrafast Broadband Spectroscopic Response. ACS Photonics, 9(4), 1425-1433. External link
Losert, M. P., Wuetz, B. P., Koelling, S., Stehouwer, L., Zwerver, A.-M. J., Philips, S. G., Madzik, M. G., Xue, X., Zheng, G., Lodari, M., Amitonov, S. V., Samkharadze, N., Sammak, A., Vanderspyen, L., Rahman, R., Coppersmith, S. N., Moutanabbir, O., Friesen, M. G., & Scappucci, G. (2022, March). Increasing the valley splitting in Si/SiGe heterostructures by exploiting atomic concentration fluctuations [Paper]. 2022 APS March Meeting, Chicago, Illinois. External link
Assali, S., Attiaoui, A., Koelling, S., Atalla, M. R. M., Kumar, A., Nicolas, J., Chowdhury, F. A., Lemieux-Leduc, C., & Moutanabbir, O. (2022). Micrometer-thick, atomically random Si0.06Ge0.90Sn0.04 for silicon-integrated infrared optoelectronics. Journal of Applied Physics, 132(19), 11 pages. External link
Atalla, M., Assali, S., Koelling, S., Daligou, G. T. E. G., Attiaoui, A., Luo, L., Lemieux-Leduc, C., Abdi, S., & Moutanabbir, O. (2022, May). Mid-infrared silicon-integrated high-bandwidth GeSn PIN photodetectors and LEDs [Paper]. Conference on Lasers and Electro-Optics (CLEO 2022), San José, CA, USA (2 pages). External link
Luo, L., Atalla, M. R. M., Assali, S., Koelling, S., Attiaoui, A., & Moutanabbir, O. (2022, November). Photodetection from SWIR to MWIR with Ge/GeSn core/shell nanowires [Paper]. IEEE Photonics Conference (IPC 2022), Vancouver, BC, Canada (2 pages). External link
Abdi, S., Assali, S., Atalla, M. R. M., Koelling, S., Warrender, J. M., & Moutanabbir, O. (2022). Recrystallization and interdiffusion processes in laser-annealed strain-relaxed metastable Ge0.89Sn0.11. Journal of Applied Physics, 131(10), 105304 (9 pages). External link
Perla, P., Faustmann, A., Koelling, S., Zellekens, P., Deacon, R., Fonseka, H. A., Kölzer, J., Sato, Y., Sánchez, A. M., Moutanabbir, O., Ishibashi, K., Grützmacher, D., Lepsa, M. I., & Schäpers, T. (2022). Te-doped selective-area grown InAs nanowires for superconducting hybrid devices. Physical Review Materials, 6(2), 024602 (9 pages). External link
Bergamaschini, R., Plantenga, R. C., Albani, M., Scalise, E., Ren, Y., Hauge, H. I. T., Koelling, S., Montalenti, F., Bakkers, E. P. A. M., Verheijen, M. A., & Miglio, L. (2021). Prismatic Ge-rich inclusions in the hexagonal SiGe shell of GaP-Si-SiGe nanowires by controlled faceting. Nanoscale, 13(20), 9436-9445. External link
Luo, L., Assali, S., Atalla, M. R. M., Koelling, S., & Moutanabbir, O. (2020). Tunable Shortwave Infrared and Midwave Infrared Optoelectronics in Germanium/Germanium Tin Core/Shell Nanowires. Meeting abstracts, MA2020-01(22), 1321-1321. External link
Koelling, S., Assali, S., Atalla, M., Kumar, A., Attiaoui, A., Lodari, M., Sammak, A., Scappucci, G., & Moutanabbir, O. (2020, October). (Invited) Probing Semiconductor Heterostructures from the Atomic to the Micrometer Scale [Paper]. SiGe, Ge, and Related Compounds: Materials, Processing, and Devices 9, Honolulu, Hawaii, USA. External link
Fadaly, E. M. T., Dijkstra, A., Suckert, J. R., Ziss, D., van Tilburg, M. A. J., Mao, C., Ren, Y., van Lange, V. T., Korzun, K., Koelling, S., Verheijen, M. A., Busse, D., Rödl, C., Furthmüller, J., Bechstedt, F., Stangl, J., Finley, J. J., Botti, S., Haverkort, J. E. M., & Bakkers, E. P. A. M. (2020). Direct-bandgap emission from hexagonal Ge and SiGe alloys. Nature, 580(7802), 205-209. External link
Assali, S., Attiaoui, A., Atalla, M., Alain, D., Kumar, A., Mukherjee, S., Nicolas, J., Koelling, S., & Moutanabbir, O. (2020, October). Engineering SiGeSn Semiconductors for MIR and THz Opto-electronic Devices [Paper]. ECS Meeting Abstracts. External link
Ioannidou, C., Navarro-López, A., Rijkenberg, A., Dalgliesh, R. M., Koelling, S., Pappas, C., Sietsma, J., van Well, A. A., & Offerman, S. E. (2020). Evolution of the precipitate composition during annealing of vanadium micro-alloyed steels by in-situ SANS. ACTA Materialia, 201, 217-230. External link
Assali, S., Bergamaschini, R., Scalise, E., Verheijen, M. A., Albani, M., Dijkstra, A., Li, A., Koelling, S., Bakkers, E. P. A. M., Montalenti, F., & Miglio, L. (2020). Kinetic Control of Morphology and Composition in Ge/GeSn Core/Shell Nanowires. ACS Nano, 14(2), 2445-2455. External link
Koelling, S., Assali, S., Atalla, M., Kumar, A., Attiaoui, A., Lodari, M., Sammak, A., Scappucci, G., & Moutanabbir, O. Probing Semiconductor Heterostructures from the Atomic to the Micrometer Scale [Paper]. SiGe, Ge, and Related Compounds: Materials, Processing, and Devices (PRiME 2020). Published in ECS Transactions, 98(5). External link
Abdi, S., Atalla, M., Assali, S., Kumar, A., Groell, L., Koelling, S., & Moutanabbir, O. (2020). Towards Ultra-Low Specific Contact Resistance on P-Type and N-Type Narrow Bandgap GeSn Semiconductors. ECS Meeting Abstracts, MA2020-01(22), 1322-1322. External link
Assali, S., Albani, M., Bergamaschini, R., Verheijen, M., Li, A., Koelling, S., Gagliano, L., Bakkers, E. P. A. M., & Miglio, L. (2019). Strain engineering in Ge/GeSn core/shell nanowires. Applied Physics Letters, 115(11), 5 pages. External link
Koelling, S., Plantenga, R. C., Hauge, H. I. T., Ren, Y., Li, A., Verheijen, M. A., Conesa Boj, S., Assali, S., Koenraad, P. M., & Bakkers, E. P. A. M. (2016, October). Impurity and defect monitoring in hexagonal Si and SiGe nanocrystals [Paper]. Symposium on SiGe, Ge, and Related Materials: Materials, Processing, and Devices 7 (PRiME 2016)/230th ECS Meeting, Honolulu, HI. Published in ECS Transactions, 75(8). External link
