Independent Spin and Charge Transport Measurements in Hybrid Organic-Inorganic Perovskites.

Hybrid organic-inorganic perovskites (HOIPs) are of interest because of their potential for spintronics applications. HOIPs have relatively high mobilities while also exhibiting spin-orbit coupling due to the presence of heavy atoms like lead and halogens. We study the spin and charge transport properties of HOIPs (namely CsPbBr₃ and MAPbBr₃) through independent measurements. We extract the spin coherence length using inverse spin Hall effect measurements in NiFe-HOIP-Pt trilayer devices. Separately, we extract the charge carrier mobility using the time-of-flight method on HOIP single crystals. By using independent measurements, we can test whether spin transport and charge transport are mediated through the same or different processes.