2021/04/01 by William J. Pappas, Pappas, William J., Rugang Geng +9
Engineering · Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Organic Light-Emitting Diodes Research #Quantum and electron transport phenomena #Semiconductor materials and devices
paper · pdf · doi:10.48550/arxiv.2104.00276
openalex publication_date 2021/04/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Devices which exploit the quantum properties of materials are widespread,\nwith quantum information processors and quantum sensors showing significant\nprogress. Organic devices offer interesting opportunities for quantum\ntechnologies owing to their engineerable spin properties, with spintronic\noperation and spin resonance magnetic-field sensing demonstrated in research\ngrade devices, as well as proven compatibility with large scale fabrication\ntechniques. Yet several important challenges remain as we move toward scaling\nthese proof-of-principle quantum devices to larger integrated logic systems or\nspatially smaller sensing elements, particularly those associated with the\nvariation of quantum properties both within and between devices. Here,\nspatially resolved magnetoluminescence is used to provide the first\ntwo-dimensional map of a spin property - the Overhauser field - in an organic\nlight-emitting diode. We find intra-device variabilities exceeding 20% while\nspatially correlated behaviour is exhibited on lengths beyond 7 ,\n \mum, similar in size to pixels in state-of-the-art AMOLED arrays,\nwhich has implications for the reproducibility and integration of organic\nquantum devices.\n