2016/08/02 by Dali Sun, Chuang Zhang, Sun, Dali +16
Engineering · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Organic and Molecular Conductors Research #Perovskite Materials and Applications #Solid-state spectroscopy and crystallography #cond-mat.mtrl-sci
paper · pdf · doi:10.48550/arxiv.1608.00993
arxiv created 2016/08/02 · openalex publication_date 2016/08/02 · arxiv updated 2016/08/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The family of organometal trihalide perovskite (OTP), CH3NH3PbX3 (where X is halogen) has recently revolutionized the photovoltaics field and shows promise in a variety of optoelectronic applications. The characteristic spin properties of charge and neutral excitations in OTPs are influenced by the large spin-orbit coupling of the Pb atoms, which may lead to spin-based device applications. Here we report the first studies of pure spin-current and spin-aligned carrier injection in OTP spintronics devices using spin-pumping and spin-injection, respectively. We measure a relatively large inverse-spin-Hall effect using pulsed microwave excitation in OTP devices at resonance with a ferromagnetic substrate, from which we derive room temperature spin diffusion length, lambdasd~9nm; and low-temperature giant magnetoresistance in OTP-based spin-valves from which we estimate lambdasd~85nm.